1.1 This test method is used to rate textile materials for thermal resistance and insulation when exposed for a short period of time to a hot surface with a temperature up to 600F (316C). This test method is applicable to woven fabrics, knit fabrics, battings, and sheet structures intended for use as clothing for protection against short exposure to hot surfaces. It is not intended for use in evaluating materials exposed to any other thermal exposure such as radiant energy or open flames. This test method is currently useful as a research and development tool.

1.2 This test method should be used to measure and describe the properties of materials, products, or assemblies in response to heat under controlled laboratory conditions and should not be used to describe or appraise the thermal hazard or fire risk of materials, products, or assemblies under actual exposure conditions.

1.3 The values as stated in SI units are to be regarded as the standard. The values in parentheses are given for information only.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.