En30B - BS 970-1955

Grade	En30B
Corresponding Standard	BS 970-1955 Wrought steels in the form of bars, billets and forgings up to 6 in. ruling section for automobile and general engineering purpose
Classification	Alloy Steel

En30B Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.26	0.1	0.4	-	-	1.1	3.9	0.2
Maximum Value	0.34	0.35	0.6	0.05	0.05	1.4	4.3	0.4

En30B Mechanical Properties

diameter or width across flats d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
Bar, Billet, Forging; Mechanical bar	Quenching and Tempering	≥1544	≥1312	≥10	≥444	≥20
Bar, Billet, Forging; Mechanical bar	Softening				≤285

• d-diameter or width across flats/mm
• The unit conversion for strength is based on: 1tons/sq.in=15.44N/mm2
• The unit conversion for impact energy absorption is based on: 1ft.lb=1.3558J

Approximate Comparison Table Structural Alloy Steel

China	United Kingdom
GB	BS EN/BS
30Cr1Ni4Mo	EN30B

En30B Corresponding Standards(Same grade name, different standards)

1	BS
	EN30B
2	BS 970-1955
	En30B

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