BS 476-4:1970 建筑材料不燃性测试

BS 476-4: Fire tests on building materials and structures- Part 4: Non-combustibility test for materials

BS 476-4: 建筑材料及结构的燃烧试验—第4部分：材料不燃性测试

样品放入测试容器中，热电偶插入样品中心并且连接测试设备.此外样品的热电偶也放进炉子内（炉内温度达到750℃，这样的状态继续整个测试-20分钟，在这个温度下记录下两个热电偶的相关数据

材料的不燃性通过如下两个方面来评估:

温升(炉内的样品的中心温度上升) 必须小于 50°C

整个测试中的出现火焰燃烧的时间必须小于10秒

BS 476 相关参考标准

BS 476: Fire tests on building materials and structures

BS 476: 建筑材料及构件防火测试

BS 476-3:2004 external fire exposure roof test

BS 476-3:2004 室外屋顶的燃烧测试

BS 476-4:1970 Non-combustibility test for materials

BS 476-4:1970 材料的不燃烧性测试

BS 476-5:1979 Method of test of ignitability

BS 476-5:1979 可燃性燃烧测试

BS476-6:1989 Method of test for propagation for materials

BS476-6:1989 制品火势蔓延的试验方法

BS 476-7:1997 Surface spread of flame test for material

BS 476-7:1997制品表面火势蔓延的试验和分级方法

BS 476-11:1982 Method for assessing the heat emission from building materials

BS 476-11:1982建筑材料热辐射性能测试方法

BS 476-12:1991 Ignitability of products by direct flame impingement

BS 476-12:1991产品直接火焰冲击的可燃性测试方法

BS 476-15:1992 Method for measuring heat release of products-cone calorimeter

BS 476-15:1992产品放热性测试-锥形量热仪

BS 476-20:1987 Method for determination of the fire resistance of elements of construction (general principles)

BS 476-20:1987建筑构件耐火的测定方法(一般原理)

BS 476-21:1987 Methods for determination of the fire resistance of loadbearing elements of construction

BS 476-21:1987 承重构件耐火的测定方法

BS 476-22:1987 Methods for determination of the fire resistance of non-loadbearing elements of construction

BS 476-22:1987非承重建筑构件耐火性能测试方法