En9K - BS 970-1955

Grade	En9K
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

En9K Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.5	0.05	0.5	-	-
Maximum Value	0.6	0.35	0.8	0.05	0.05

En9K Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Bar stock, ingot, forging; t ≤ 28.6	Quenching and Tempering (T)	≥849	≥525	≥15	248~302
Bar stock, ingot, forging; t ≤ 28.6	Quenching and tempering (S)	≥772	≥479	≥18	223~277
Bars, Ingot, Forgings; t≤50.8	Quenching and tempering (R)	≥695	≥432	≥18	201~255
Bar, Ingot, Forging; t≤101.6	Normalizing	≥695	≥355	≥18	201~255
Bar, Ingot, Forging; t≤101.6	Cold Drawing	772~1004		≥12	223~302

• 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"!