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NFPA 2112 

Refers to NFPA's“Standard on Flame Resistant Workwear for Protection of Industrial Personnel Against Flash Fire.” A flash fire is spontaneous, reaching very high temperatures although short in duration. NFPA 2112 defines the testing methods and performance requirements for flame-resistant fabrics. Peaceyarn® products are all NFPA 2112 certified.

ASTM F1506

ASTM F1506, 2010A Standard Performance Specification for Flame Resistant and Arc Rated Textile Materials for Wearing Apparel for Use by Electrical Workers Exposed to Momentary Electric Arc and Related Thermal Hazards requires a sample of flame resistant fabric to self-extinguish with a less than 2 second after flame and a less than 6 inch char length. The FR fabric must also pass these requirements after 25 washes/dry cleaning. Peaceyarn® FR Workwear are certified by Underwriters Laboratories to meet the requirements of ASTM F1506, 2010A.

EN 11612
EN11612 standard

EN ISO 11612:2015- Protective clothing – Clothing to protect against heat and flame
Code A1: Flame spread – face ignition
Code A2 Flame spread – edge ignition

Code B: Convective heat

Performance levels
Range of HTI 24 values (Unit: second)
Min. Max.
B1 4 <10.0
B2 10 <20.0
B3 20  
Note: HTI=Heat transfer index

Code C: Radiant heat
Performance levels
Heat transfer factor RHTI 24 values (Unit: second)
Min. Max.
C1 7 <20.0
C2 20 <50.0
C3 50 <95.0
C4 95  
Note: RHTI=Radiant heat transfer index

Code D: Molten aluminium splash
Performance levels
Molten aluminium splash (Unit: gram)
Min. Max.
D1 100 <200
D2 200 <350
D3 350  

Code E: Molten iron splash
Performance levels
Molten iron splash (Unit: gram)
Min. Max.
E1 60 <120
E2 120 <200
E3 200

Code F: Contact heat
Performance levels
Threshold time (Unit: second)
Min. Max.
F1 5 <10.0
F2 10 <15.0
F3 15

EN 11611
EN11611 standard
EN ISO 11611: 2015- Protective clothing for use in welding and allied processes
Code A1: surface ignition
Code A2: edge ignition

Impact of spatter
Performance levels
Drops before raising 40K behind the material
Class 1 >15 drops
Class 2 >25 drops

Radiant heat
Performance levels
HTI 24 values (Unit: second)
Class 1 >7 seconds
Class 2 >16 seconds

EN 14116
EN14116 standard
EN ISO 14116: 2015- protective clothing – Limited flame spread materials
Flame Spread Flaming Debris Afterglow Hole
Index 1 × × ≤2s no to edge
Index 2 × × not spread no formation
Index 3 × × ≤2s no formation
Note: Index 1 materials shall not be worn next to the skin.

EN 1149
EN1149 standard

EN 1149-5:2008 Performance Requirements
Antistatic PPE is certified to EN1149-5 as this standard covers the performance requirements of the garments and refers to the choice of 2 different test methods (EN1149-1 or EN1149-3).

EN 1149-1:2006 Measurements of Surface Resistivity
This test method is most appropriate for materials for which the electrostatic dissipative behaviour is based on surface conductivity (for instance containing surface conductive yarns or a homogeneous conductive
outside PVC coating layer). This method is not appropriate for core conductive fibres.

EN 1149-3:2004 Measurements of Surface Resistivity
This test method is referenced for materials for which the electrostatic dissipative behaviour is based on core conducting fibres but can also be used for surface conducting materials.
In the EN1149 series, there is also an EN1149-2 (measurement of the electrical resistance through a material; the vertical resistance) which is used as a test method in EN ISO 11611 (welders clothing) and which is also mentioned in Annex H of EN 469:2005. A further part of EN1149 is under development which will cover the testing of the fully garment – this part of the standard is EN1149-4.
Area Requirement
Class 1 Class 2 Class 3
Fluorescent material 0.14 0.5 0.8
Reflective material 0.1 0.13 0.2
Combined material 0.2
Note: Unit: square meters

EN 20471
EN ISO 20471: 2013 High visibility clothing – Test methods and requirements
Area Requirement
Class 1 Class 2 Class 3
Fluorescent material 0.14 0.5 0.8
Reflective material 0.1 0.13 0.2
Combined material 0.2
Note: Unit: square meters

ANSI 107

ANSI is short for American National Standards Institute, who established the standard of high-visibility safety garments for construction, maintenance, utility, emergency responders, airport ramp personnel and other workers are routinely exposed to the hazard of low visibility at work. The standard specifies the following:

  • Design
  • Requirements for background and combined-performance retro-reflective materials
  • Photo metric and physical performance requirements for retro-reflective materials
  • Care Labeling


Modacrylic is an inherently flame resistant fiber, no melt & no drip. It is used mainly to blend with other FR fibers, natural fibers or cellulose fibers. FR garments made from modacrylic blend fabric have softer feeling compared with other FR fabrics, such as FR cotton or Aramid IIIA, so it’s ideal for knitwear, baselayer.

Aramid IIIA

Generally it is considered as the equivalent of Nomex® IIIA. as they have same composition of 93% meta-aramid, 5% para-aramid, 2% anti-static.
We also offer flame resistant clothing made from fabric using the fiber provided by Dupont® China.

FR Knits

PEACEYARN® FR Knits product is a range of inherently flame resistant knitted fabric with FR modacrylic fiber blend with cotton fiber, cellulose fiber, aramid fiber. It offers FR Jersey/Pique/Interlock with breathability & moisture, FR Fleece with thermal & wind-proof.

Arc Flash

According to the Natinal Fire Protection Association (NFPA), Arc Flash is an electric current that passes through air when insulation or isolation between electrified conductors is no longer sufficient to withstand the applied voltage.

An Arc Flash accident can cause minor injuries, third degree burns and potential death as well as other injuries including blindness, hearing loss, nerve damage and cardiac arrest.

HRC Category

The result of the arc flash study will categorize the hazard at specific equipment based on the incident energy, as well as identify the Arc Flash Protection Boundary.

Hazard Risk Category
Clothing Cal/cm²
0 Non-melting, flammable materials(I.e., untreated cotton, wool, rayon, or silk, or blends of these materials) with a fabric weight of at least 4.5 oz/yd² N/A
1 FR shirt and FR pants of FR Coverall 4
2 Cotton underwear – conventional short sleeve and brief / shorts, plus FR shirt and FR pants 8
3 Cotton underwear plus FR shirt and FR pants plus FR coverall, or cotton underwear plus two FR coveralls 25
4 Cotton underwear plus FR shirt and FR pants plus multilayer flash suit 40
Extreme Danger No PPE Available >40

Flash Fire

A flash fire is a quick-moving, intense fire caused by ignition of  flammable materials such as dust, gas, or the vapors of an ignitable liquid, without the production of damaging pressure.