En40C - BS 970-1955

Grade	En40C
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

En40C Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V
Minimum Value	0.3	0.1	0.4	-	-	2.5	-	0.7	0.1
Maximum Value	0.5	0.35	0.8	0.05	0.05	3.5	0.4	1.2	0.3

En40C 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; d≤63.5	Quenching and Tempering	≥1312	≥1112	≥10	375~444	≥20

• 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

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