30MnB5 1.5531 - EN 10083-3-2006

Grade	30MnB5
European Standard Steel Grade	1.5531
Corresponding Standard	EN 10083-3-2006 Quenched and tempered steels — Part 3: Technical delivery conditions for boron steels
Classification	Alloy Steel

30MnB5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	B
Minimum Value	0.27	-	1.15	-	-	0.0008
Maximum Value	0.33	0.4	1.45	0.025	0.035	0.005

• Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat and for boron to have its effect on the hardenability. All reasonable precautions shall be taken to prevent the addition of such elements from scrap or other material used in the manufacture which affect the hardenability, mechanical properties and applicability.

Approximate Comparison Table Structural Alloy Steel

China	European Standard
GB	EN
35MnB	30MnB5

30MnB5 Corresponding Standards(Same grade name, different standards)

1	EN 10083-3-2006
	30MnB5 1.5531
2	ISO 683-2-2016
	30MnB5
3	EN ISO 683-2-2018
	30MnB5
4	NF EN 10083-3-2006
	30MnB5 1.5531

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