826M40 - BS 970-3-1991

Grade	826M40
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

826M40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.36	0.1	0.45	-	-	0.5	2.3	0.45
Maximum Value	0.44	0.4	0.7	0.035	0.04	0.8	2.8	0.65

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

826M40 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	826M40U	Quenching and Tempering + Turning or Grinding	925~1075	≥740	≥12	269~331	Izod:≥34 KCV:≥28
100＜d≤150	826M40U	Quenching and Tempering + Turning or Grinding	925~1075	≥755	≥12	269~331	Izod:≥47 KCV:≥42
63＜d≤250	826M40V	Quenching and Tempering + Turning or Grinding	1000~1150	≥835	≥12	293~352	Izod:≥34 KCV:≥28
63＜d≤150	826M40V	Quenching and Tempering + Turning or Grinding	1000~1150	≥850	≥12	293~352	Izod:≥47 KCV:≥42
29＜d≤250	826M40W	Quenching and Tempering + Turning or Grinding ①	1075~1225	≥925	≥11	311~375	Izod:≥27 KCV:≥22
29＜d≤150	826M40W	Quenching and Tempering + Turning or Grinding ①	1075~1225	≥940	≥11	311~375	Izod:≥40 KCV:≥35
29＜d≤150	826M40X	Quenching and Tempering + Turning or Grinding ①	1150~1300	≥1020	≥10	341~401	Izod:≥34 KCV:≥28
29＜d≤150	826M40Y	Quenching and Tempering + Turning or Grinding ①	1225~1375	≥1095	≥10	363~429	Izod:≥34 KCV:≥28
29＜d≤100	826M40Z	Quenching and Tempering + Turning or Grinding ①	≥1550	≥1235	≥7	≥444②	Izod:≥13 KCV:≥11
100＜d≤150	826M40U	Quenching + Tempering + Cold Drawing or Quenching + Tempering + Cold Drawing + Grinding	925~1075	≥770	≥9	269~331	Izod:≥47
63＜d≤100	826M40V	Quenching + Tempering + Cold Drawing or Quenching + Tempering + Cold Drawing + Grinding	1000~1150	≥865	≥9	293~362	Izod:≥47
29＜d≤150	826M40W	Quenching and tempering + cold drawing or quenching and tempering + cold drawing + grinding ①②③	1075~1225	≥955	≥8	311~375	Izod:≥40
29＜d≤150	826M40X	Quenching and Tempering + Cold Drawing or Quenching and Tempering + Cold Drawing + Grinding ①②③④	1150~1300	≥1035	≥7	341~401	Izod:≥34
29＜d≤150	826M40Y	Quenching and Tempering + Cold Drawing or Quenching and Tempering + Cold Drawing + Grinding ①②③④	1225~1375	≥1110	≥7	363~429	Izod:≥34
29＜d≤100	826M40Z	Quenching and Tempering + Cold Drawing or Quenching and Tempering + Cold Drawing + Grinding ①②③④	≥1550⑤	≥1250	≥5	≥444	Izod:≥13
Rod		Turning, Grinding or Cold Drawing and Softening				≤277

Approximate Comparison Table Structural Alloy Steel

China	United Kingdom
GB	BS EN/BS
40CrNi3Mo	826M40

826M40 Corresponding Standards(Same grade name, different standards)

1	BS 970-3-1991
	826M40
2	BS 970-1-1983
	826M40

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