45Mn2 A00452 - GB /T 11251-2020

Grade	45Mn2
China ISC	A00452
Corresponding Standard	GB /T 11251-2020 Alloy Structural Steel Plate and Strip
Classification	Alloy Steel
Properties	Strength Hardness Machinability Quench Hardness
Density	7.8 g/cm³

45Mn2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.42	0.17	1.4	-	-	-	-	-	-
Maximum Value	0.49	0.37	1.8	0.03	0.03	0.3	0.3	0.3	0.1

• The composition shall comply with the provisions of GB/T 3077-2015

45Mn2 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
Annealing	600~850	≥13	≥47

• The surface Brinell hardness of steel plates delivered in a high-temperature tempered state shall comply with the provisions of GB/T 3077-2015

Approximate Comparison Table Structural Alloy Steel

45Mn2 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"!