En5 - BS 970-1955

Grade	En5
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	Carbon Steel

En5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.25	0.05	0.6	-	-
Maximum Value	0.35	0.35	1	0.06	0.06

En5 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 stock, billets, forgings, machined rods; d≤63.5	Normalizing	≥494	≥247	≥25	143~193	≥27
Bar stock, billets, forgings, machined rods; d≤63.5	Quenching and Tempering P	≥540	≥340	≥22	152~207	≥27
Bars, bar billets, forgings, machined bars; d≤19.05	Quenching and Tempering Q	≥618	≥432	≥20	179~229	≥27
Bars, bar billets, forgings, machined bars; d≤12.7	Quenching and Tempering R	≥695	≥494	≥20	201~255	≥54

• 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 High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany		France	European Standard		Russia	United Kingdom
GB	JIS	SAE	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
30	S30C	1030	C30 C30E4	C30 Ck30	1.0528	AF50C30 XC32	C30	1.0528	30	080M32 En5

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