En20B - BS 970-1955

Grade	En20B
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

En20B Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.35	0.1	0.4	-	-	1	0.5
Maximum Value	0.45	0.35	0.7	0.05	0.05	1.5	0.9

En20B 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
Bars, Billets, Forgings; d≤63.5	Quenching and Tempering (T)	≥849	≥679	≥18	248~302	≥54
Bars, Billets, Forgings; d≤63.5	Quenching and Tempering U	≥926	≥741	≥17	269~321	≥47
Bar, billet, forging; d≤28.6	Quenching and Tempering V	≥1004	≥803	≥16	293~341	≥47

• 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"!