20NiCrMoS6-4 1.6571 - EN 10263-3-2017

Grade	20NiCrMoS6-4
European Standard Steel Grade	1.6571
Corresponding Standard	EN 10263-3-2017 Steel Rod, Bars and Wire for Cold Heading and Cold Extrusion Part 3: Technical Delivery Conditions for Steels for Case Hardening Steels
Classification	Alloy Steel

20NiCrMoS6-4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.16	-	0.5	-	0.02	0.6	1.4	-	0.25
Maximum Value	0.23	0.3	0.9	0.025	0.04	0.9	1.7	0.25	0.35

20NiCrMoS6-4 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %	Hardness HBW
Bars; 5<d≤40	Processed to Ferrite-Pearlite Structure and Hardness Range (+FP)			149~201
Bars; 5<d≤40	Spheroidizing (+AC)	≤610	≥58
Bar, wire; 2<d≤5	Untreated, Cold Drawn, Spheroidizing Treatment (+U+C+AC)	≤610	≥60
Bar, wire; 5<d≤40	Untreated, Cold Drawn, Spheroidizing Treatment (+U+C+AC)	≤590	≥60
Bar, wire; 2<d≤5	Untreated, Cold Drawn, Spheroidizing Treatment, and Tempered Rolling (+U+C+AC+LC)	≤650	≥58
Bar, wire; 5<d≤40	Untreated, Cold Drawn, Spheroidizing Treatment, and Tempered Rolling (+U+C+AC+LC)	≤630	≥58
Bars, wire; 5<d≤10	Spheroidizing Treatment and Cold Drawing (+AC+C)	≤730	≥55
Bars, wire; 10<d≤40	Spheroidizing Treatment and Cold Drawing (+AC+C)	≤720	≥55

Approximate Comparison Table Hardenability Guaranteed Structural Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

Russia

United Kingdom

ISC

CNS

JIS

ASTM

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

20CrNi2MoH

A50215

SNCM420H

4320H

H43200

18CrNiCrMo7H

20NiCrMoS6-4

1.6571

20NiCrMo6-4

20ХН2М

(802H17)

20NiCrMoS6-4 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"!