Which statement correctly describes noncombustible materials in relation to ASTM E136?

Which statement correctly describes noncombustible materials in relation to ASTM E136?

• A. A material that passes NFPA 259 test.
• B. A material that passes ASTM E136.
• C. A material that fails ASTM E136 but passes NFPA 259.
• D. A material that is not tested.

Answer: (B)

Noncombustible materials are defined by how they perform in the ASTM E136 test, which is the standard method for assessing noncombustibility using an oxygen index. In this test, a material is exposed to a flame under controlled oxygen conditions; if the material does not ignite or cannot sustain flaming combustion in air, it is considered noncombustible. Because NFPA 101 relies on this evaluation, a material that passes ASTM E136 correctly describes noncombustible materials. The other options don’t fit because NFPA 259 is a different test with a different purpose, a material that fails E136 would not be labeled noncombustible, and a material that hasn’t been tested cannot be qualifying noncombustible.

Noncombustible materials are defined by how they perform in the ASTM E136 test, which is the standard method for assessing noncombustibility using an oxygen index. In this test, a material is exposed to a flame under controlled oxygen conditions; if the material does not ignite or cannot sustain flaming combustion in air, it is considered noncombustible. Because NFPA 101 relies on this evaluation, a material that passes ASTM E136 correctly describes noncombustible materials. The other options don’t fit because NFPA 259 is a different test with a different purpose, a material that fails E136 would not be labeled noncombustible, and a material that hasn’t been tested cannot be qualifying noncombustible.