SMn438 SMn 2 - JIS G 4106-1979

Grade	SMn438
Old Grade
Corresponding Standard	JIS G 4106-1979 Manganese Steels and Manganese Chromium Steels for Machine Structural Use
Classification	Alloy Steel

SMn438 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.35	0.15	1.35	-	-	-	-	-
Maximum Value	0.41	0.35	1.65	0.03	0.03	0.35	0.25	0.3

SMn438 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	≥736	≥588	≥18	≥50	212~285	≥78

New and Old Grade Replacement List

Corresponding Standard	Grade
JIS G 4106-1979	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

Russia

Sweden

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

SS₁₄

BS EN/BS

35Mn2

A00352

SMn433

SMn433
SMn438

SMn433

1335

G13350

36Mn6

36Mn5

1.1167

35M5

35Г2

2120

150M36

2 Approximate Comparison Table structural alloy steel

China		Taiwan, China	Japan	South Korea	United States		International Organization for Standardization	France	European Standard		Russia
GB	ISC	CNS	JIS	KS	ASTM/AISI	UNS	ISO	NF EN/NF	EN	Numerical Grade	GOST
40Mn2	A00402	SMn438	SMn438 SMn443	SMn438	1340	G13400	42Mn6	40M5	42Mn6	1.1055	40Г2

SMn438 Corresponding Standards(Same grade name, different standards)

1	JIS G 4053-2003
	SMn438
2	JIS G 4053-2016
	SMn438
3	JIS G 4106-1979
	SMn438 (SMn 2)

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