Leather Properties and Care
Is Leather Flame Resistant?
Not as a rating. Untreated leather is slow to ignite and chars instead of melting, but it has no FR label unless treated and tested. Here is how it scores.
Not as a rating. Untreated leather is slow to ignite and chars instead of melting, but it has no flame-resistant (FR) label of its own, and in one vertical flame test it burned past the pass limit. Leather is called flame resistant only after a flame retardant treatment and a passed test.
This answer is part of our hub on leather properties and care. Whether leather burns at all is covered in is leather fireproof?
"Flame resistant" is a test result, not a material
In US workwear rules, flame-resistant clothing means fabric that is inherently flame resistant or chemically treated with a flame retardant. OSHA's electric power rule points to ASTM F1506, a specification for FR textiles. Flame retardant still does not mean fireproof. It means the material ignites later, burns slower and often puts itself out.
So "is leather flame resistant?" has a narrow answer: a hide carries no FR rating by default.
This video from the safety-training channel NASP / IASP explains how flame-resistant (FR) clothing works, the difference between fibers that are flame resistant by nature and fabrics treated with a finish, and why treated finishes wear off with washing, abrasion and UV. It covers textiles, not leather, and it calls FR material self-extinguishing, which is tested behavior, not a promise that it cannot burn.
How untreated leather scores on the FR checks
These results come from one 2022 ACS Omega study on one leather. Other hides and finishes will test differently.
| What FR rules look at | How untreated leather does | Fact |
|---|---|---|
| Does it melt onto skin? | No. It chars, while synthetics melt | – |
| Time to ignition | Slowly: 32 to 38 seconds for 1.4 mm leather under strong radiant heat | – |
| Does it keep burning? | It smolders. One sample's afterglow lasted 51 minutes after the flame test | – |
| Burn length, vertical test | 7.5 in (19.1 cm), past the 6 in (15.2 cm) limit | – |
Where leather counts as protection anyway
US electrical safety rules let heavy-duty leather work gloves of at least 12 oz/yd² (407 g/m²) stand in for arc-rated hand protection, up to 14 cal/cm² of estimated arc energy. Welders also wear heavy leather gloves and jackets against heat and flames. That is protection for a set task, not an FR rating. For gloves, see are leather gloves heat resistant?
Flame-retardant leather
Furniture and vehicle-seat leather must meet flammability specifications, so tanneries add flame retardants during finishing, by spraying, roller coating or pad-dry-cure. When a product claims flame resistance, look for the named test it passed.
Leather vs Kevlar and faux leather
Kevlar is a heat-resistant synthetic fiber used in firefighter uniforms. Faux leather is built from plastic layers such as PU or PVC, and burn-test guides say it catches fire or melts. For heat without flame, see is leather heat resistant?; for melting, can leather melt?
Choosing a leather jacket
If you are choosing by hide, Leather Collection men's leather jackets are mostly cowhide or sheepskin. The store makes no flame-resistance claim for them, and neither does this page.
FAQ
Is Kevlar flame-resistant?
Kevlar is described as heat resistant and is used in firefighter uniforms. Leather has no comparable rating unless treated.
Is faux leather flammable?
Yes. It tends to catch fire or melt, where real leather chars.
Is anything 100% fireproof?
Leather is not: it is slow to ignite, but it burns. See what happens when leather burns.
HitKB Editorial Team
HitKB articles are researched from published sources, cited in the text, and reviewed before publication.