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F436 Type 3简介

牌号	F436 Type 3
对应标准	ASTM F436/436M-2019 淬火钢垫圈的标准规范 Hardened steel washers inch and metric dimensions
归类	合金钢
标签	耐候钢

F436 Type 3 化学元素成分含量(%)

	成分	Si	P	S	Cr	Ni	Cu
Heat analysis	最小值	0.15	-	-	0.45	0.25	0.25
Heat analysis	最大值	0.35	0.04	0.05	0.65	0.45	0.45

	成分	Si	P	S	Cr	Ni	Cu
Product analysis	最小值	0.13	-	-	0.42	0.22	0.22
Product analysis	最大值	0.37	0.045	0.055	0.68	0.48	0.48

碳当量计算

F436 Type 3 机械性能

	硬度 HBW
Through hardened washers	HRC 38~45
zinc-coated by the hot-dip	HRC 26~45

① Through hardened washers shall have a hardness of 38 to 45 HRC, except when zinc-coated by the hot-dip process, in which case they shall have a hardness of 26 to 45 HRC.
② Carburized washers shall be carburized to a minimum depth of 0.015 in. (inch series) or 0.38 mm (metric series) and shall have a surface hardness of 69 to 73 HRA or 79 to 83 HR15N, except when zinc-coated by the hot-dip process, in which case they shall have a hardness of 63 to 73 HRA or 73 to 83 HR15N.
③ Carburized and hardened washers shall have a minimum core hardness of 30 HRC or 65 HRA.

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