SCr440 SCr 4 - JIS G 4104-1979

Grade	SCr440
Old Grade
Corresponding Standard	JIS G 4104-1979 Chromium steels
Classification	Alloy Steel

SCr440 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.38	0.15	0.6	-	-	0.9	-	-
Maximum Value	0.43	0.35	0.85	0.03	0.03	1.2	0.25	0.3

SCr440 Mechanical Properties

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
Quenching + Tempering	≥932	≥784	≥13	≥45	269~331	≥59

New and Old Grade Replacement List

Corresponding Standard	Grade
JIS G 4104-1979	Grade Old Grade
JIS G 4053-2003	Grade
JIS G 4053-2016	Grade

1 Approximate Comparison Table Structural Alloy Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Russia

Sweden

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

SS₁₄

BS EN/BS

40Cr

A20402

SCr440

SCr440
SCr440H

SCr440

5140

G51400

41Cr4

1.7035

42C4

41Cr4

1.7035

40Х

2245

530A40
530M40

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN	Numerical Grade
SCr440 SCr440H	41Cr4	41Cr4	1.7035

SCr440 Corresponding Standards(Same grade name, different standards)

1	JIS G 4053-2003
	SCr440
2	JIS G 4053-2016
	SCr440
3	Q/BQB 517-2018
	SCr440
4	JIS G 4104-1979
	SCr440 (SCr 4)

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