1144 Class A G11440 - ASTM A311/A311M-2004(R2020)

Grade	1144 Class A
USA UNS	G11440
Corresponding Standard	ASTM A311/A311M-2004(R2020) Standard Specification for Cold -Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirments
Classification	Carbon Steel

1144 Class A Chemical Element Composition Content (%)

Component	C	Mn	P	S
Minimum Value	0.4	1.35	-	0.24
Maximum Value	0.48	1.65	0.04	0.33

1144 Class A Mechanical Properties

Thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
t≤20	≥725	≥655	≥10	≥30
20＜t≤30	≥690	≥620	≥10	≥30
30＜t≤50	≥655	≥585	≥10	≥25
50＜t≤70	≥620	≥550	≥10	≥20
70＜t≤115	≥585	≥520	≥10	≥20

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