30CrMnSiNi2A - GJB 1951-1994

Grade	30CrMnSiNi2A
Corresponding Standard	GJB 1951-1994 Specification for quality structure steel bars for avication
Classification	Alloy Steel

30CrMnSiNi2A Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu ^*	Mo ^*	Ti ^*	W ^*	V ^*
Minimum Value	0.27	0.9	1	-	-	0.9	1.4	-	-	-	-	-
Maximum Value	0.34	1.2	1.3	0.025	0.025	1.2	1.8	0.25	0.15	0.03	0.2	0.05

30CrMnSiNi2A Mechanical Properties

condition	Mark	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 Rod		Annealing					156~255
Longitudinal specimen①		Quenching + Tempering	≥1570	-	≥9	≥45	≥444	≥47
Transverse sample ①		Quenching + Tempering	≥1520	-	≥5	≥25	-	≥16
Longitudinal Sample②	Pre-normalizing allowed	Quenching + Tempering	≥1570	-	≥8	≥35	≥444	≥31

30CrMnSiNi2A Corresponding Standards(Same grade name, different standards)

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