40MnB - H2ABC

40MnB Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	B
Minimum Value	0.37	0.17	1.1	-	-	0.0008
Maximum Value	0.44	0.37	1.4	0.015	0.025	0.005

40MnB Mechanical Properties

product form	Heat Treatment or Condition	Hardness HBW
Hot-rolled steel plate (Baosteel)	Hot Rolling	HV ≤300
Hot-rolled steel plate (Baosteel)	Annealing	HV ≤180
Hot-rolled steel plate (Baosteel)	Water Quenching 800~880℃	HRC ≥50
Hot-rolled steel plate (Baosteel)	Oil Quenching 830~890℃	HRC ≥48

1 Approximate Comparison Table Structural Alloy Steel

2 Approximate Comparison Table Structural Alloy Steel

40MnB 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"!