31CrMoB2–1 1.7272 - DIN EN 10263-4-2018

Grade	31CrMoB2–1
Germany W-Nr.	1.7272
Corresponding Standard	DIN EN 10263-4-2018 Steel Rod, Bars and Wire for Cold Heading and Cold Extrusion Part 4: Technical Delivery Conditions for Steels for Quenching and Tempering
Classification	Alloy Steel

31CrMoB2–1 Chemical Element Composition Content (%)

Component	C	Si ^ⓔ	Mn	P	S	Cr ^ⓕ	Cu	Mo	B
Minimum Value	0.28	-	0.9	-	-	0.4	-	0.1	0.0008
Maximum Value	0.33	0.3	1.2	0.025	0.025	0.55	0.25	0.15	0.005

31CrMoB2–1 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
Bars, rods, wires; 5<d≤40	Spheroidizing or Spheroidizing and Peeling (+AC or +AC+PE)	≤570	≥61
Wire; 2<d≤5	Unheated, Cold Drawn, and Spheroidized (+U+C+AC)	≤570	≥63
Wire; 5<d≤40	Unheated, Cold Drawn, and Spheroidized (+U+C+AC)	≤550	≥63
Wire; 2<d≤5	Unheated, Cold Drawn, Spheroidized, and Quenched Rolling (+U+C+AC+LC)	≤610	≥61
Wire; 5<d≤40	Unheated, Cold Drawn, Spheroidized, and Quenched Rolling (+U+C+AC+LC)	≤590	≥61
Wire; 5<d≤40	Spheroidizing + Cold Drawn (+AC+C)	≤690	≥56

31CrMoB2–1 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"!