50R - CSA G40.21-2004

Grade	50R
Corresponding Standard	CSA G40.21-2004 Structural Quality Steel
Classification	Alloy Steel

50R Chemical Element Composition Content (%)

	Component	C	Si ^ⓑ	Mn	P	S	Cr ^ⓜ	Ni ^ⓜ	Cu ^ⓓⓜ
①	Minimum Value	-	-	-	0.05	-	0.3	-	0.2
①	Maximum Value	0.16	0.75	0.75	0.15	0.04	1.25	0.9	0.6

50R Mechanical Properties

thickness t mm	Tensile Strength σ_b ksi	Yield Point σ_s ksi	Elongation or Extension Rate δ %
t≤2-1/2①	70~95	≥50	L0=8in: long.: ≥19 tr.: ≥16 L0=2in: long.: ≥21 tr.: ≥18
Rolled shapes and sheet piling；common shape size group 1	70~95	≥50	L0=8in: ≥19② L0=2in: ≥20

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