1.1 本试验方法包括评估材料暴露于熔融物质浇注时的耐热性。 1.1.1 使用铝、黄铜和铁的熔融物质验证了该试验方法。该试验应允许与其他物质一起使用。 1.2 本试验方法适用于制成初级防护服成品的材料。 1.3 本试验方法不测量材料的易燃性，也不用于评估暴露于任何其他热暴露的材料。 1.4 使用本试验方法测量和描述材料、产品或组件在受控实验室条件下对熔融物质浇注的响应特性，不得用于描述或评估实际条件下材料、产品或组件的热危害或火灾风险。然而，可以将该测试结果用作热风险评估的要素，该评估考虑了与特定最终用途的热危害评估相关的所有因素。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 第节给出了具体的危险说明 8. . 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 有可能暴露于熔融金属接触的工人，应允许使用使用本试验方法评估传热的材料穿戴防护服。 5.2 本试验方法评估了用于防止潜在熔融物质接触的主要防护服的材料的隔热性能及其对试验暴露的反应。 5.3 由本试验方法确定的保护性能将与实际端部有关- 仅在最终使用暴露与试验方法中使用的暴露相同的程度上使用性能。 5.4 对试样的目视检查主观上记录了材料对熔融物质接触的阻力。

1.1 This test method covers the evaluation of materials' thermal resistance to heat transfer when exposed to a molten substance pour. 1.1.1 This test method was validated using molten substances of aluminum, brass, and iron. The test shall be permitted to be adapted for use with other substances. 1.2 This test method is applicable to materials from which finished primary protective apparel articles are made. 1.3 This test method does not measure the flammability of materials, nor is it intended for use in evaluating materials exposed to any other thermal exposure. 1.4 Use this test method to measure and describe the properties of materials, products, or assemblies in response to molten substance pour under controlled laboratory conditions and shall not be used to describe or appraise the thermal hazard or fire risk of materials, products, or assemblies under actual conditions. However, it is acceptable to use results of this test as elements of a thermal risk assessment which takes into account all the factors that are pertinent to an assessment of the thermal hazard of a particular end use. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 8 . 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Workers who have the potential to be exposed to molten metal contact shall be permitted to wear protective clothing using materials that have been evaluated for heat transfer using this test method. 5.2 This test method rates materials that are intended for primary protective clothing against potential molten substance contact for their thermal insulating properties and their reaction to the test exposure. 5.3 The protective performance, as determined by this test method, will relate to the actual end-use performance only to the degree that the end-use exposure is identical to the exposure used in the test method. 5.4 Visual inspection of the specimen subjectively notes the material's resistance to molten substance contact.