（A）芳族聚酰胺纤维超过30重量％，和（b）20至35重量％的改性聚丙烯腈纤维具有（c）中21或更少，每旦尼尔3克或更大的干抗张强度的极限氧指数 人造丝纤维20％-35％（重量）具有，有（d）中的纤维适用于防电弧和防火使用包含0-3重量％的防静电纤维的，和纱线，织物共混物，和/或衣服 碲，这些百分比组分（a），（b）中，（c）和（d）中，共混物，纱线，织物和/或改性聚丙烯腈纤维和人造丝纤维本发明的服装的差异量的基础上 为10重量％或以下时，纤维共混物，纱线，织物和/或服装。

(A) the aramid fibers exceeds 30% by weight, and (b) 20 to 35 weight percent modacrylic fiber has a limiting oxygen index of (c) 21 or less, and the dry tensile strength of 3 or more grams per denier a rayon fiber of 20 to 35% by weight having, there in (d) fiber blend suitable for use in arc and flame protection comprising 0-3 weight percent of the antistatic fibers, and yarns, fabrics, and / or clothing on, these percentages are component (a), (b), (c), and on the basis of (d), the blend, yarn, fabrics, and / or the amount of modacrylic fiber and rayon fibers present in the garment difference , 10 wt% or less, fiber blend, yarn, fabric and / or clothing,.