J429 Grade 5 - SAE J429-2011

Grade	J429 Grade 5
Corresponding Standard	SAE J429-2011 Mechanical and Material Requirements for Externally Threaded Fasteners
Classification	Carbon Steel

J429 Grade 5 Chemical Element Composition Content (%)

	Component	C	P	S ^①
中碳钢	Minimum Value	0.28	-	-
中碳钢	Maximum Value	0.55	0.025	0.025

	Component	C	P	S ^①	B
添加硼、铬、锰碳钢	Minimum Value	0.15	-	-	0.0005
添加硼、铬、锰碳钢	Maximum Value	0.4	0.025	0.025	0.003

J429 Grade 5 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b ksi	Yield Point σ_s ksi	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
1/4 ~ 1 (Full Size Sample)	Quenching and Tempering	≥120				（HRC） ≤54
1 ~ 1-1/2 (Full Size Sample)	Quenching and Tempering	≥105				≤50
1/4 ~ 1 (Machined Sample)	Quenching and Tempering	≥120	≥92	≥14	≥35	≤54
1 ~ 1-1/2 (Machined Sample)	Quenching and Tempering	≥105	≥81	≥14	≥35	≤50

Note: Full Size means a tension test specimen consisting of a completed fastener for testing in the ready to use condition without alteration

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