280M01 - BS 970-1-1983

Grade	280M01
Corresponding Standard	BS 970-1-1983 British Standard Specification for Wrough steels for mechanical and allied engineering purposes Part 1. General inspection and testing procedures and specific requirements for carbon,carbon manganese,alloy and stainless steels
Classification	Alloy Steel

280M01 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S ^*	V ^◎	Al
Minimum Value	0.3	0.15	0.6	-	0.045	0.08	-
Maximum Value	0.55	0.6	1.5	0.035	0.065	0.2	0.035

• For older grades of stainless steel, see Table 2 of standard BS 970-4-1970

280M01 Mechanical Properties

diameter or 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
Steel; 6≤d≤100	S◎	775~925	≥530	≥14	223~277	≥10
Steel; 6≤d≤29	T◎	850~1000	≥560	≥12	248~302	≥8
Steel; 6≤d≤13	U◎	925~1075	≥600	≥10	269~331	≥8

• Re-yield strength；Rp0.2-Stress at 0.2% proof plastic elongation (0.2% proof strength).
• Not specified, σs in the table refers to Re
• ft.lb=1.3558J

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