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In various fields of work, special fabrics are used to protect against an abnormal external environment. In industries, construction sites, and other technical work, the human body or other valuable items can be conveniently protected from the flame, high temperature, electric arcs, using textiles. To assess how well the product protects, they check it with such certificates:
Heat resistance at 180°C (EN ISO 11612 only) – ISO 17493Flame spread – ISO 15025Dimensional change – ISO 5077Tensile, tear & seam strength or burst strength – ISO 13934-1, ISO 13937-2 & ISO 13935-2 or ISO 13938-1Innocuousness – pH or chromium content – ISO 3071 or ISO 17075Impact of spatter (EN ISO 11611 only) – ISO 9150Heat transfer (radiation) (EN ISO 11611 only) – ISO 6942Electrical resistance (EN ISO 11611 only) – EN 1149-2 (performed at a modified temperature and relative humidity)Heat resistance at 260°C – ISO 17493Water penetration Code letter W) – EN 343Convective heat (Code letter B) – ISO 9151Radiant heat (Code letter C) – ISO 6942Molten aluminum splash (Code letter D) – ISO 9185Molten iron splash (Code letter E) – ISO 9185Contact heat (Code letter F) – ISO 12127
NFPA 2112 is used in America to assess the performance of industrial workwear and although the tests are similar to those listed above, ASTM test methods are used. A significant difference is that NFPA 2112 makes manikin testing mandatory and imposes pass/fail criteria for such testing.