J1199 Class 10.9 - SAE J1199-1978(R2001) - H2ABC

中文版

Grade	J1199 Class 10.9
Corresponding Standard	SAE J1199-1978(R2001) Mechanical and material requirements for metric externally threaded steel fasteners
Classification	Alloy Steel

J1199 Class 10.9 Chemical Element Composition Content (%)

	Component	C	P	S
中碳合金钢（适用于所有尺寸）	Minimum Value	0.28	-	-
中碳合金钢（适用于所有尺寸）	Maximum Value	0.55	0.04	0.045

	Component	C	Mn	P	S	B
低碳马氏体钢(≤M20)	Minimum Value	0.15	0.74	-	-	0.0005
低碳马氏体钢(≤M20)	Maximum Value	0.27	1.46	0.038	0.048	0.003

	Component	C	Mn	P	S	B
中碳硼钢(≤M24)	Minimum Value	0.25	0.74	-	-	0.0005
中碳硼钢(≤M24)	Maximum Value	0.4	-	0.048	0.058	0.003

J1199 Class 10.9 Mechanical Properties

	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
M6~M36					HRC(product) 33~39
M6~M36 (Full size)	≥1040
> M24 (Machined samples)	≥1040	≥940	≥9	≥35

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!