23MnNiMoCr 5-4 1.6758 - DIN 17115-2012 - H2ABC

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Grade	23MnNiMoCr 5-4
Germany W-Nr.	1.6758
Corresponding Standard	DIN 17115-2012 Steel for welded round link chains and chain components-Technical delivery conditions
Classification	Alloy Steel
Properties	Weldability

23MnNiMoCr 5-4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Al
Minimum Value	0.2	-	1.1	-	-	0.4	0.9	-	0.5	-	0.025
Maximum Value	0.26	0.25	1.4	0.02	0.015	0.6	1.1	0.2	0.6	0.012	0.05

23MnNiMoCr 5-4 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
d≤10	Quenching + Tempering (+QT)	≥1225	≥1100	≥12	≥50		≥60
10<d≤20		≥1200	≥1080	≥10	≥50		≥60
20<d≤40		≥1180	≥1060	≥10	≥50		≥60
40<d≤63		≥1155	≥1040	≥10	≥50		≥60
d＞63		≥1130	≥1020	≥10	≥50		≥60
Chain*	Processing for Cold Shearing (+S)	≤860				HV10: ≤268；HBW10:≤255
Chain	Annealing (+A)	≤790				HV10: ≤247；HBW10:≤235
Chain	Annealing + Cold Drawing (+A+C)	≤930				HV10: ≤289；HBW10:≤275
Chain **	Spheroidizing Annealing (+AC)	≤710				HV10: ≤221；HBW10: ≤210
Chain	Spheroidizing Annealing + Cold Drawing (+AC+C)	≤800				HV10: ≤250；HBW10: ≤238

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