722M24 - BS 970-3-1991

Grade	722M24
Corresponding Standard	BS 970-3-1991 Specification for wrought steel for machanical and allied engineering purposes part 3:bright bars for general engineering purposes
Classification	Alloy Steel

722M24 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.2	0.1	0.45	-	-	3	0.45
Maximum Value	0.28	0.4	0.7	0.035	0.04	3.5	0.65

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

722M24 Mechanical Properties

condition	Mark	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
150＜d≤250	722M24T	Quenching and Tempering + Turning or Grinding	850~1000	≥650	≥13	248~302	Izod:≥40 KCV:≥35
6≤d≤150	722M24T	Quenching and Tempering + Turning or Grinding	850~1000	≥680	≥13	248~302	Izod:≥54 KCV:≥50
6≤d≤150	722M24U	Quenching and Tempering + Turning or Grinding	925~1075	≥755	≥12	269~331	Izod:≥47 KCV:≥42
6≤d≤150	722M24T	Quenching + Tempering + Cold Drawing or Quenching + Tempering + Cold Drawing + Grinding	850~1000	≥700	≥9	248~302	Izod:≥54
6≤d≤150	722M24U	Quenching + Tempering + Cold Drawing or Quenching + Tempering + Cold Drawing + Grinding	925~1075	≥770	≥9	269~331	Izod:≥47
Rod		Turning, Grinding or Cold Drawing and Softening				≤269

Approximate Comparison Table Nitriding Steels

International Organization for Standardization	Germany	France	European Standard		United Kingdom
ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	BS EN/BS
31CrMo12	31CrMo12	30CD12	31CrMo12	1.8515	722M24

722M24 Corresponding Standards(Same grade name, different standards)

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