J429 Grade 4 - SAE J429-2011

Grade	J429 Grade 4
Corresponding Standard	SAE J429-2011 Mechanical and Material Requirements for Externally Threaded Fasteners
Classification	Carbon Steel

J429 Grade 4 Chemical Element Composition Content (%)

Component	C	P	S
Minimum Value	0.28	-	-
Maximum Value	0.55	0.025	0.13

J429 Grade 4 Mechanical Properties

	Tensile Strength σ_b ksi	Yield Point σ_s ksi	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Full-size specimens;1/4~1 1/2	≥115	Proof load: 65
Machine test specimens of Bolt, screw and studs;1/4~1 1/2	≥115	≥100	≥10	≥35	Core Hardness Rockwell: C22~C32

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"!