45A - GJB 1951-1994

Grade	45A
Corresponding Standard	GJB 1951-1994 Specification for Quality Structure Steel Bars for Avication
Classification	Carbon Steel

45A Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu ^*	Mo ^*	Ti ^*	W ^*	V ^*
Minimum Value	0.42	0.17	0.5	-	-	-	-	-	-	-	-	-
Maximum Value	0.5	0.37	0.8	0.03	0.03	0.3	0.3	0.25	0.15	0.03	0.2	0.05

45A Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Steel bars①	Supply State	≥590	≥315	≥13	≥40	170~229
Steel bar ②	Supply State	≥590	≥315	≥11	≥30	170~229	≥31

45A Corresponding Standards(Same grade name, different standards)

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