How to Read Cut Resistance Ratings: EN 388 and ANSI Standards for Slash‑Resistant Clothing Explained — A Must‑Read Guide for Personal Protective Equipment Selection
Author: smartarmours.com
Table of Contents
- Key Facts Box
- Summary Blocks
- 1. Introduction
- 2. Design Considerations and Standards for Slash‑Resistant Clothing
- 2.1 Cut Resistance Levels and Standards
- 2.2 Material Selection
- 2.3 Fabric Construction and Manufacturing
- 2.4 Coverage and Fit
- 2.5 Performance Evaluation Methods
- 3. Comparative Performance Analysis
- 3.1 Comparative Metrics
- 3.2 Performance of Various Fabrics and Systems
- 3.3 Comprehensive Comparison Table
- 4. Practical Implementation and Wearability
- 4.1 Integration into Protective Gear
- 4.2 Comfort, Mobility, and Usability
- 4.3 Maintenance and Care
- 5. Case Studies and Real‑World Applications
- 5.1 Security Professionals
- 5.2 Correctional Facility Personnel
- 5.3 Border and Immigration Officers
- 5.4 Customs and Maritime Security
- 6. Challenges and Future Directions
- 6.1 Technical Limitations
- 6.2 Regulatory and Adoption Barriers
- 6.3 Emerging Technologies
- 7. Conclusion
- FAQ
- Glossary of Terms
- Key Takeaways
- References
Key Facts Box
| Property | Typical Value | Notes |
|---|---|---|
| Blade cut resistance (ISO 13997:1999) | Measured as cutting force in newtons (N) | ISO 13997 does not assign a discrete level; it measures the force required to cut through a sample under controlled conditions using a TDM‑100 test machine. |
| EN 388:2016+A1:2018 cut level | A–F (F highest) | EN 388:2016 uses the ISO 13997 result to assign letter grades. The force thresholds are: A ≤ 2 N, B > 2–5 N, C > 5–10 N, D > 10–15 N, E > 15–22 N, F > 22–30 N. |
| EN 388:2003 cut level (superseded) | 1–5 (5 highest) | Older European standard; still cited in some product literature but replaced by EN 388:2016. |
| ASTM F1790/F1790M | Cut force in grams or newtons | Uses the CPP (Cut Protection Performance) Tester. Current edition: F1790/F1790M‑15(2025). |
| ASTM F2992/F2992M | Cut force in grams | Uses the TDM‑100 Tester. This is the current ANSI/ISEA 105 test method. |
| ANSI/ISEA 105‑2016 cut level | A1–A9 (A9 highest) | US standard using ASTM F2992. Nine levels allow finer categorization of high‑cut‑resistant materials. |
| Fabric thickness for high cut protection | Typically 5–9 mm, depending on weave and fiber | Thickness alone does not determine cut level; density, yarn, weave, coating, and test method also matter. |
| Water resistance | Optional | Some SRC fabrics receive water‑repellent finishes; water resistance is not a standardized requirement for cut protection. |
| Washability | Many products are machine washable at ≤ 40 °C | Verify with manufacturer instructions and test reports. |
| Allergenicity | Often latex‑free when elastic components are used | Latex‑free construction is common but not universal. |
| Coverage | Forearms, underarms, wrists, elbows, upper arms | The axillary region is anatomically vulnerable because of the axillary artery. |
| Limitations | Not stab‑proof, not ballistic‑proof | SRC reduces slash injury risk; it does not replace all protective measures. |
Summary Blocks
Technical Overview
Slash‑resistant clothing (SRC) is engineered to reduce injury from blade‑type edge weapons, especially slashes and cuts. The core performance metric is blade cut resistance, measured by standards such as ISO 13997:1999, EN 388:2016, ASTM F1790/F1790M, and ASTM F2992/F2992M. These standards differ in output:
- ISO 13997:1999 measures the force required to cut through a sample and reports a force value in newtons (N). In the EN 388:2016 context, this test is performed using a TDM‑100 (Tomodynamometer) machine.
- EN 388:2016+A1:2018 uses the ISO 13997 result to assign cut levels A–F, with F being the highest. The force thresholds are: A ≤ 2 N, B > 2–5 N, C > 5–10 N, D > 10–15 N, E > 15–22 N, F > 22–30 N.
- ASTM F1790/F1790M measures cut force using a CPP (Cut Protection Performance) Tester.
- ASTM F2992/F2992M is the updated test method that uses the TDM‑100 Tester and is the basis for the ANSI/ISEA 105‑2016 cut levels A1–A9.
SRC fabrics typically use high‑density woven polyamide (nylon), polyester blends, or composite structures that may incorporate aramid, UHMWPE, glass fiber, metallic mesh, or other high‑performance materials.
Material Composition
Common material categories include:
- Polyamide (nylon): High tensile strength, good abrasion resistance, and moderate flexibility. Dense woven nylon is widely used in cut‑resistant sleeves and garments.
- Polyester (PET): Good dimensional stability, UV resistance, and chemical resistance. PET cut resistance is comparable to nylon, with a cut index of approximately 1.4 (CPP/g/m² basis) in some patent data.
- Para‑aramid (Kevlar®): High strength, high modulus (58–158 GPa depending on grade), and good heat resistance. Cut force approximately 1.7–1.9 gf/gsm (ISO 13997 basis).
- UHMWPE (Dyneema®/Spectra®): Very high strength‑to‑weight ratio. Regular HPPE has moderate cut resistance; Dyneema Diamond Technology (with inorganic filler) offers up to 200% improvement over regular HPPE.
- Glass fiber: Low cost, high hardness. Under ISO 13997 or ASTM F2992‑15 testing, 100% glass fiber exhibits cut force approximately three times higher than para‑aramid at the same weight.
- Vectran® (LCP): Liquid crystal polymer fiber. About 30% more efficient than aramid in mechanical strength; Vectran® with 1–2% tungsten filler shows significantly improved cut resistance compared to unfilled Vectran® and HPPE.
- Hybrid composites: Ceramic, glass, metallic, or nano‑reinforced layers can increase hardness and resist blade penetration, but may add weight, stiffness, or cost.
- Coatings: Polyurethane, silicone, fluoropolymer, or other finishes can reduce friction, improve water repellency, or enhance durability. Some fluoropolymer coatings raise environmental and health considerations, including PFAS concerns.
Performance Testing
Laboratory testing follows standardized protocols:
- ISO 13997:1999: TDM‑100 machine, controlled blade motion, measures force to cut through.
- EN 388:2016: Includes abrasion, blade cut (Coupe test), tear, puncture, ISO 13997 cut (TDM‑100), and optional impact cut. Cut levels A–F.
- ASTM F1790/F1790M: CPP Tester, measures cut force.
- ASTM F2992/F2992M: TDM‑100 Tester, measures cut force; basis for ANSI/ISEA 105‑2016 A1–A9.
Coverage and Fit
SRC garments should cover forearms, underarms, wrists, elbows, and upper arms. The underarm region is particularly vulnerable because of the axillary artery. A snug but flexible fit is important so that arm lifting does not expose the undersurface.
Practical Deployment
SRC garments are used by security personnel, correctional officers, border and immigration officers, customs and maritime security staff, and other high‑risk roles. They may be integrated into uniforms or worn as an additional layer. Many products are machine washable, latex‑free, and concealable under standard uniforms, but these properties vary by manufacturer and model.
1. Introduction
Protective clothing against edged weapons has evolved in response to knife and slash injuries among security, law enforcement, correctional, border, customs, and public‑service personnel. Slash‑resistant clothing (SRC) is designed to prevent or mitigate blade penetration across critical body zones. Although SRC is increasingly available, adoption remains uneven because of cost, comfort, weight, regulatory ambiguity, and differences in threat assessment.
This review synthesizes information from international standards, published laboratory testing, peer‑reviewed literature, and manufacturer‑reported data. It distinguishes between standardized requirements, laboratory findings, and product claims. The aim is to provide a technically rigorous overview for designers, safety managers, procurement specialists, and end users.
2. Design Considerations and Standards for Slash‑Resistant Clothing
2.1 Cut Resistance Levels and Standards
International standards define cut resistance in different ways. The most relevant standards are:
| Standard | Governing Body | What It Measures | Output | Test Machine | Representative High Protection |
|---|---|---|---|---|---|
| ISO 13997:1999 | ISO | Blade cut resistance under controlled force | Cutting force in newtons (N) | TDM‑100 | Higher force = better |
| EN 388:2016+A1:2018 | CEN | Abrasion, blade cut (Coupe), tear, puncture, ISO 13997 cut, optional impact | Cut level A–F | Coupe + TDM‑100 | Level F (≥ 22–30 N) |
| ASTM F1790/F1790M | ASTM | Blade cut resistance | Cutting force in grams or newtons | CPP Tester | Higher force = better |
| ASTM F2992/F2992M | ASTM | Blade cut resistance | Cutting force in grams | TDM‑100 | Basis for ANSI A1–A9 |
| ANSI/ISEA 105‑2016 | ISEA | Hand protection classification | Cut level A1–A9 | TDM‑100 | A9 highest (≥ 6000 g) |
| EN 388:2003 | CEN | Older cut test | Cut level 1–5 | Coupe | Level 5 was highest; superseded |
Important clarification:
ISO 13997:1999 does not itself assign “Level 5” or “Level E.” It provides a cut force value. EN 388:2016 converts that value into cut levels A–F. Older EN 388:2003 used levels 1–5, which is why “Level 5” still appears in some product literature. When comparing products, always identify the standard edition and the reported metric.
2.2 Material Selection
SRC fabrics typically use high‑density woven polyamide, polyester blends, or composite structures. Key material attributes include:
- High tensile strength: Resists tearing under blade impact.
- High hardness or modulus: Resists blade penetration.
- Dimensional stability: Maintains shape under flex, abrasion, and washing.
- Flexibility: Supports mobility and wearability.
- Thermal and chemical stability: Maintains performance in the intended environment.
Polyamide (Nylon)
Polyamide fibers, such as nylon 6 and nylon 6,6, offer high tensile strength, good elastic recovery, and moderate abrasion resistance. Dense woven nylon fabrics can provide substantial cut resistance. Nylon tensile modulus is typically in the range of 2–4 GPa. Nylon’s elasticity can lead to fabric distortion under dynamic loading if the structure is not stabilized.
Polyester (PET)
Polyester offers good dimensional stability, UV resistance, and chemical resistance. Its tensile modulus is generally lower than that of aramid or UHMWPE. PET cut resistance is comparable to nylon, with a cut index of approximately 1.4 (CPP/g/m² basis) in some patent data.
Para‑Aramid (Kevlar®)
Para‑aramid fibers offer high strength, high modulus (58–158 GPa depending on grade), and good heat resistance. Cut force is approximately 1.7–1.9 gf/gsm on an ISO 13997 basis. Para‑aramid is sensitive to moisture and UV degradation.
UHMWPE (Dyneema®/Spectra®)
UHMWPE fibers offer very high strength‑to‑weight ratio. Regular HPPE has moderate cut resistance; Dyneema Diamond Technology (with inorganic filler) offers up to 200% improvement over regular HPPE fiber. A 13‑gauge glove made with Dyneema Diamond Technology can achieve EN 388 Coupe level 4, sometimes level 5, while similar regular HPPE constructions achieve only level 2 or 3.
Glass Fiber
Glass fiber offers low cost and high hardness. Under ISO 13997 or ASTM F2992‑15 testing, 100% glass fiber exhibits cut force approximately three times higher than para‑aramid at the same weight. Glass fiber can increase cut resistance significantly but may reduce comfort and cause skin irritation if fibers are exposed.
Vectran® (LCP)
Vectran® is a liquid crystal polymer fiber that is approximately 30% more efficient than aramid in mechanical strength. Vectran® with 1–2% tungsten filler shows significantly improved cut resistance compared to unfilled Vectran® and HPPE. Vectran® also offers excellent thermal stability and moisture resistance.
Hybrid Composites
Hybrid composites combine materials to improve performance:
- Ceramic or glass fibers: Increase hardness and cut resistance.
- Metallic mesh or wire: Can deflect blade trajectories but adds weight.
- Carbon nanotubes (CNT) or graphene: Studied for nano‑scale reinforcement; commercial adoption in SRC remains limited.
- Shear‑thickening materials: Laboratory‑stage materials that stiffen under impact.
Coatings and Finishes
- Polyurethane: Improves abrasion resistance and grip.
- Silicone: Adds water repellency and flexibility.
- Fluoropolymer: Reduces friction and blade slippage; however, some fluoropolymers raise PFAS environmental and health concerns.
- Ceramic‑filled coatings: May improve cut resistance but can affect breathability.
2.3 Fabric Construction and Manufacturing
SRC performance depends on weave density, yarn type, layer structure, and manufacturing quality. Common construction methods include:
| Construction Method | Description | Typical Thickness | Typical Cut Protection |
|---|---|---|---|
| Dense plain weave | Interlocking yarns in warp and weft | 5–7 mm | High, depending on yarn and density |
| Rib or corduroy weave | Raised pattern increases yarn density | 6–9 mm | High |
| Multi‑layer laminate | Base fabric + high‑performance layer + coating | 8–12 mm | High |
| 3‑D knitted structure | Interlaced loops for flexibility | 4–6 mm | Moderate to high |
| Composite with metal mesh | Metal wire or mesh layer | 8–12 mm | Moderate to high; heavier |
| Laminated high‑performance fiber | Aramid or UHMWPE layers | 4–8 mm | High |
Weave density is often described using yarn denier and fabric weight. Denier is a linear density unit for yarn (grams per 9000 meters). Fabric weight is typically expressed in grams per square meter (g/m²).
2.4 Coverage and Fit
SRC garments are engineered to protect specific body zones. Key coverage areas include:
- Forearms: High risk because of the frequency of knife attacks targeting wrists and forearms.
- Underarms (axillary region): Close to the axillary artery; poor coverage can lead to severe bleeding.
- Wrists and elbows: Critical during arm lifting and defensive movements.
- Upper arms: Useful for certain security and correctional roles.
- Torso and neck: Covered in some higher‑protection systems.
Fit requirements:
- Allow rapid arm movement without exposing the undersurface.
- Avoid excessive bulk that restricts mobility.
- Maintain coverage during bending, reaching, and grappling.
- Integrate with uniforms, vests, and other PPE without creating gaps.
2.5 Performance Evaluation Methods
Laboratory evaluation uses standardized and non‑standardized tests. The most relevant methods include:
| Test | Standard | Procedure Highlights | Output Metric | Test Machine |
|---|---|---|---|---|
| Blade cut resistance | ISO 13997:1999 | Controlled blade motion; measures force required to cut through | Force in newtons (N) | TDM‑100 |
| Cut level assignment | EN 388:2016 | Uses ISO 13997 result to assign cut level | A–F | TDM‑100 |
| Blade cut (Coupe) | EN 388:2016 | Circular blade under fixed load, back‑and‑forth motion | Index (1–5) | Coupe Tester |
| Cut resistance | ASTM F1790/F1790M | Straight blade, controlled load | Force in grams/N | CPP Tester |
| Cut resistance | ASTM F2992/F2992M | Straight blade, controlled load | Force in grams | TDM‑100 |
| Cut level | ANSI/ISEA 105‑2016 | Based on ASTM F2992 results | A1–A9 | TDM‑100 |
| Abrasion resistance | EN 388:2016 | Abrasion cycles before failure | Cycle count | – |
| Tear resistance | EN 388:2016 | Force to tear | Newtons (N) | – |
| Puncture resistance | EN 388:2016 | Force to puncture | Newtons (N) | – |
| Impact cut | EN 388:2016 (optional) | Impact blade test | Pass/fail | – |
| Wash durability | ISO 6330 or AATCC 135 | Home or commercial washing | Retention of performance | – |
Note: ASTM D5034 is a tensile strength test for fabrics; it is not a wash‑durability standard. Wash durability should reference ISO 6330, AATCC 135, or the manufacturer’s specified method.
3. Comparative Performance Analysis
3.1 Comparative Metrics
| Metric | Definition | Relevance |
|---|---|---|
| Cut force (N) | Force required to cut through under ISO 13997 or ASTM F1790/F2992 | Higher is better |
| EN 388:2016 cut level | A–F based on ISO 13997 force | F is highest |
| ANSI/ISEA 105 cut level | A1–A9 based on ASTM F2992 | A9 is highest |
| Blade penetration depth | Depth under specified test conditions | Lower is better |
| Force to penetration | Peak force in newtons | Higher is better |
| Weight per unit area (g/m²) | Fabric weight | Affects wearability |
| Thickness (mm) | Fabric thickness | Affects bulk and flexibility |
| Air permeability | Breathability | Affects heat stress |
3.2 Performance of Various Fabrics and Systems
| Fabric/Composite | Typical Cut Performance | Typical Thickness (mm) | Key Findings |
|---|---|---|---|
| Woven 100% polyamide (nylon), 400 denier | Moderate to high; may reach EN 388:2016 C–E depending on structure | 6–7 | Widely used; good balance of cut resistance and flexibility. High‑density or composite structures needed for E–F. |
| Polyamide/polyester blend, 500 denier | High; often D–F | 5–8 | Blend improves flexibility and UV resistance. |
| Hybrid ceramic/polyamide | High; often E–F | 7–9 | Ceramic or glass adds hardness; may increase weight. |
| Para‑aramid (Kevlar®) | High; often E–F | 4–8 | Cut force ~1.7–1.9 gf/gsm; good heat resistance; moisture sensitive. |
| UHMWPE composite (Dyneema Diamond) | High; up to 200% improvement over regular HPPE | 4–7 | High strength‑to‑weight ratio; lower melting point. |
| Glass fiber composite | Very high; up to 3× para‑aramid cut force | 3–6 | High cut resistance but may cause skin irritation; testing limitations with Coupe method. |
| Vectran® (LCP) with 1–2% tungsten | Very high; superior to unfilled Vectran® and HPPE | 4–7 | About 30% more efficient than aramid; excellent thermal stability. |
| Metal mesh overlay on polyester | Moderate to high; D–F | 8–12 | Metal mesh adds barrier effect but increases weight and bulk. |
| Polyurethane‑coated woven polyamide | High; often E–F | 6–7 | Coating reduces friction and improves durability; may reduce breathability. |
3.3 Comprehensive Comparison Table
| Category | Representative Fabric | EN 388:2016 Cut Level (Typical) | ANSI/ISEA 105 Cut Level (Typical) | Thickness (mm) | Weight (g/m²) | Notes |
|---|---|---|---|---|---|---|
| Pure nylon | 400 denier woven | C–E | A2–A4 | 6–7 | 650–750 | Good balance; minimal bulk; high‑density needed for E–F |
| Nylon/polyester blend | 500 denier | D–F | A3–A5 | 5–8 | 600–700 | Improved flexibility |
| Para‑aramid | Kevlar® blend | E–F | A4–A6 | 4–8 | 500–700 | Heat resistant; moisture sensitive |
| UHMWPE (regular) | HPPE knit | B–C | A1–A3 | 4–7 | 450–650 | Lightweight; moderate cut resistance |
| UHMWPE (Diamond) | Dyneema Diamond | D–F | A4–A7 | 4–7 | 450–650 | Up to 200% improvement over regular HPPE |
| Glass fiber composite | Glass/nylon blend | E–F | A5–A7 | 3–6 | 500–800 | Very high cut resistance; skin irritation risk; Coupe test limitations |
| Vectran® + tungsten | LCP with filler | E–F | A5–A7 | 4–7 | 550–750 | Superior to HPPE; thermal stability |
| Hybrid ceramic | Ceramic/nylon composite | E–F | A5–A8 | 7–9 | 750–850 | Heavier; good cut resistance |
| Metal mesh overlay | Polyester + metal mesh | D–F | A3–A6 | 8–12 | 900–1200 | Heavy; barrier effect |
| PU‑coated nylon | Coated woven nylon | E–F | A4–A6 | 6–7 | 650–750 | Durable; less breathable |
Note: Typical values depend on test method, blade type, sample orientation, number of layers, and manufacturer. Always request full test reports.
4. Practical Implementation and Wearability
4.1 Integration into Protective Gear
SRC can be integrated as:
- Separate sleeves or arm guards.
- Integrated uniform sleeves.
- Under‑uniform base layers.
- Over‑uniform protective layers.
- Modular systems with removable panels.
4.2 Comfort, Mobility, and Usability
Comfort factors:
- Weight, thickness, breathability, moisture wicking, flexibility, fit, and skin sensitivity.
Mobility factors:
- Range of motion, bending and reaching, weapon access, vehicle ingress/egress, grappling.
Usability factors:
- Donning/doffing time, adjustability, compatibility with other PPE, concealability, durability.
4.3 Maintenance and Care
- Follow manufacturer washing instructions.
- Use mild detergent; avoid bleach and fabric softeners unless approved.
- Wash at or below the specified temperature, often ≤ 40 °C.
- Inspect after each wash for cuts, abrasion, seam damage, and coating loss.
- Replace damaged garments.
- Verify that repairs use compatible materials and methods.
5. Case Studies and Real‑World Applications
5.1 Security Professionals
Security personnel may face knife threats in public venues, events, transport hubs, and private facilities. SRC sleeves and under‑uniform layers can reduce slash injury risk while maintaining a professional appearance.
5.2 Correctional Facility Personnel
Correctional officers face a high risk of improvised edged‑weapon attacks in confined spaces. SRC garments should cover forearms, underarms, and upper arms. Fit must allow rapid movement during restraints and cell extraction.
5.3 Border and Immigration Officers
Border and immigration officers may encounter knife threats during inspections, interviews, and enforcement operations. Climate and heat stress are important considerations.
5.4 Customs and Maritime Security
Customs and maritime security personnel may face edged‑weapon threats during boarding, search, and seizure operations. SRC should be compatible with life vests, harnesses, and wet environments.
6. Challenges and Future Directions
6.1 Technical Limitations
- Not stab‑proof: SRC primarily targets slashes and cuts; it may not stop thrusts from needles, spikes, or narrow blades.
- Not ballistic‑proof: SRC does not replace ballistic protection.
- Coverage gaps: Seams, closures, and movement can expose unprotected areas.
- Weight and heat stress: Higher protection often increases weight and thermal burden.
- Test variability: Results depend on blade, angle, speed, and sample preparation.
- Coupe test limitations: The Coupe test in EN 388:2016 may produce unreliable results for high‑cut‑resistance materials containing glass or steel due to blade dulling.
6.2 Regulatory and Adoption Barriers
- Different standards and editions cause confusion.
- Procurement may prioritize cost over verified performance.
- Lack of mandatory SRC requirements in some jurisdictions.
- Limited real‑world performance data.
- Comfort concerns reduce consistent use.
6.3 Emerging Technologies
- Nano‑reinforced fibers: CNT, graphene, and nanocellulose studied for lightweight reinforcement.
- Shear‑thickening materials: Stiffen under impact; research stage.
- Smart fabrics: Sensors for impact detection and wear monitoring.
- PFAS‑free finishes: Reduced environmental impact.
- Modular designs: Replaceable panels and adaptive coverage.
- Improved test methods: More realistic attack simulation and dynamic testing.
7. Conclusion
Slash‑resistant clothing is an important component of personal protective equipment for security, correctional, border, customs, maritime, and other high‑risk roles. Performance is governed by standards such as ISO 13997:1999, EN 388:2016+A1:2018, ASTM F1790/F1790M, ASTM F2992/F2992M, and ANSI/ISEA 105‑2016.
Key distinctions:
- ISO 13997 and ASTM F1790/F2992 report cut force in newtons or grams.
- EN 388:2016 assigns cut levels A–F (F highest, ≥ 22–30 N).
- ANSI/ISEA 105‑2016 assigns cut levels A1–A9 (A9 highest, ≥ 6000 g).
- The older EN 388:2003 levels 1–5 are sometimes still cited, which can cause confusion.
High‑density woven polyamide, polyester blends, para‑aramid, UHMWPE, glass fiber, Vectran®, and hybrid composites can all provide high cut resistance when properly constructed. Coverage, fit, seam design, and maintenance are as important as the base fabric. SRC reduces slash injury risk but does not eliminate it.
Future work should focus on lighter, cooler, more durable materials; PFAS‑free finishes; standardized real‑world testing; and clearer procurement guidance.
FAQ
Q1: What does “Level 5” mean for slash‑resistant clothing?
“Level 5” usually refers to the old EN 388:2003 cut scale, where 5 was the highest level. EN 388:2016 replaced this with cut levels A–F, where F is the highest. ISO 13997:1999 does not assign levels; it measures cut force in newtons. Always confirm which standard and edition a product cites.
Q2: What are the EN 388:2016 A–F cut force thresholds?
The thresholds are: A ≤ 2 N, B > 2–5 N, C > 5–10 N, D > 10–15 N, E > 15–22 N, F > 22–30 N.
Q3: What is the difference between ASTM F1790 and ASTM F2992?
ASTM F1790 uses the CPP (Cut Protection Performance) Tester. ASTM F2992 is the updated method that uses the TDM‑100 Tester and is the basis for ANSI/ISEA 105‑2016 cut levels A1–A9.
Q4: Is ISO 13997 the same as EN 388?
No. ISO 13997:1999 is an international test method that measures cut force. EN 388:2016 is a European standard that includes several tests, including an ISO 13997‑based cut test using the TDM‑100 machine, and assigns cut levels A–F.
Q5: What is the difference between slash‑resistant and stab‑resistant?
Slash‑resistant clothing resists cutting and slicing motions. Stab‑resistant clothing is designed to resist thrusts and punctures. Some products offer both, but they are not the same.
Q6: Can slash‑resistant clothing stop all knife attacks?
No. SRC reduces the risk of cuts and slashes but may not stop thrusts, narrow blades, needles, or attacks to uncovered areas.
Q7: Is slash‑resistant clothing bulletproof?
No. Slash‑resistant clothing is not ballistic protection.
Q8: How should I compare two slash‑resistant garments?
Compare the standard and edition, cut force in newtons or grams, EN 388:2016 cut level, ANSI/ISEA 105 cut level, thickness, weight, coverage, seam construction, wash durability, and test reports.
Q9: Does washing reduce cut resistance?
It can. Repeated washing may affect coatings, flexibility, and fiber structure. Follow manufacturer instructions and request wash‑durability test data.
Q10: What about PFAS in coatings?
Some water‑repellent and friction‑reducing coatings may contain PFAS. Ask suppliers for PFAS‑free options if environmental or health concerns are relevant.
Glossary of Terms
Abrasion resistance: Ability to withstand surface wear.
ANSI/ISEA 105‑2016: US standard for hand protection classification, with cut levels A1–A9.
Aramid: High‑strength synthetic fiber, including para‑aramid and meta‑aramid.
ASTM F1790/F1790M: Standard test method using CPP Tester for cut resistance.
ASTM F2992/F2992M: Standard test method using TDM‑100 Tester for cut resistance; basis for ANSI A1–A9.
Axillary artery: Major artery in the underarm region.
Blade cut resistance (BCR): Resistance to cutting by a blade.
Coupe test: Circular blade cut test in EN 388; may be unreliable for high‑cut‑resistance materials due to blade dulling.
CPP Tester: Cut Protection Performance Tester; used in ASTM F1790.
Cut force: Force in newtons or grams required to cut through a material.
Denier: Linear density of yarn; grams per 9000 meters.
EN 388:2003: Older European standard with cut levels 1–5.
EN 388:2016+A1:2018: Current European standard with cut levels A–F and TDM‑100 cut test.
Fabric weight: Mass per unit area, usually g/m².
Glass fiber: Inorganic fiber with high cut resistance; approximately 3× para‑aramid cut force at same weight.
ISO 13997:1999: International standard for measuring cut resistance by force using TDM‑100.
PFAS: Per‑ and polyfluoroalkyl substances; used in some coatings.
SRC: Slash‑resistant clothing.
TDM‑100: Tomodynamometer; test machine used in ISO 13997, EN 388:2016, and ASTM F2992.
UHMWPE: Ultra‑high‑molecular‑weight polyethylene.
Vectran®: Liquid crystal polymer fiber; approximately 30% more efficient than aramid.
Weave density: Tightness of yarn interlacing in a woven fabric.
Key Takeaways
- Standards differ: ISO 13997 and ASTM F1790/F2992 report cut force; EN 388:2016 assigns A–F; ANSI/ISEA 105‑2016 assigns A1–A9.
- EN 388:2016 force thresholds: A ≤ 2 N, B > 2–5 N, C > 5–10 N, D > 10–15 N, E > 15–22 N, F > 22–30 N.
- ASTM F1790 uses CPP Tester; ASTM F2992 uses TDM‑100.
- Material matters: Nylon, polyester, para‑aramid, UHMWPE, glass fiber, Vectran®, and hybrids have distinct trade‑offs.
- Glass fiber exhibits approximately 3× para‑aramid cut force at same weight.
- Dyneema Diamond Technology offers up to 200% improvement over regular HPPE.
- Vectran® with tungsten filler shows significantly improved cut resistance.
- SRC has limits: Not stab‑proof or ballistic‑proof.
References
- International Organization for Standardization. ISO 13997:1999 – Protective clothing — Mechanical properties — Determination of resistance to cutting by sharp objects. Geneva: ISO.
- European Committee for Standardization. EN 388:2016+A1:2018 – Protective gloves against mechanical risks. Brussels: CEN.
- European Committee for Standardization. EN 388:2003 – Protective gloves against mechanical risks. Brussels: CEN. (Superseded.)
- ASTM International. ASTM F1790/F1790M‑15(2025) – Standard Test Method for Measuring Cut Resistance of Materials Used in Protective Clothing. West Conshohocken, PA: ASTM.
- ASTM International. ASTM F2992/F2992M‑15 – Standard Test Method for Measuring Cut Resistance of Materials Used in Protective Clothing with Tomodynamometer (TDM‑100) Equipment. West Conshohocken, PA: ASTM.
- International Safety Equipment Association. ANSI/ISEA 105‑2016 – American National Standard for Hand Protection Classification. Arlington, VA: ISEA.
- ASTM International. ASTM D5034 – Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test). West Conshohocken, PA: ASTM.
- International Organization for Standardization. ISO 6330 – Textiles — Domestic washing and drying procedures for textile testing. Geneva: ISO.
- AATCC. AATCC TM135 – Dimensional Changes of Fabrics after Home Laundering. Research Triangle Park, NC: AATCC.
- DSM. Dyneema Diamond Technology technical data.
- Kuraray. Vectran® technical data.
- Patent literature on cut‑resistant fibers and fabrics.
- Peer‑reviewed literature on cut‑resistant textiles and protective clothing performance.
- Manufacturer technical data sheets and third‑party test reports.
Revision Notes (v2.0)
- Added complete EN 388:2016 A–F force threshold table (A ≤ 2 N through F > 22–30 N).
- Clarified ASTM F1790 uses CPP Tester; ASTM F2992 uses TDM‑100.
- Added ASTM F2992/F2992M and ANSI/ISEA 105‑2016 to standards section.
- Added PET cut index (~1.4 CPP/g/m²).
- Added para‑aramid modulus (58–158 GPa) and cut force (~1.7–1.9 gf/gsm).
- Added glass fiber cut force (~3× para‑aramid).
- Added Dyneema Diamond Technology (up to 200% improvement).
- Added Vectran® with tungsten filler data.
- Noted Coupe test limitations for high‑cut‑resistance materials (blade dulling).
- Adjusted nylon typical cut level to C–E (high‑density needed for E–F).
- Preserved all correct original knowledge points.