55Si2Mn - GB /T 1222-1984

55Si2Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.52	1.5	0.6	-	-	-	-	-
Maximum Value	0.6	2	0.9	0.035	0.035	0.35	0.35	0.25

55Si2Mn 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
Wire; Rolled	Quenching and Tempering	≥1274	≥1176	≥6	≥30
Wire; Hot-rolled		-	-	-	-	≤302

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