44SMn28 - ISO 683-9-1988

Grade	44SMn28
Corresponding Standard	ISO 683-9-1988 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels — Part 9: Wrought Free-Cutting Steels
Classification	Carbon Steel
Properties	Good Machinability

44SMn28 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.4	0.15	1.3	-	0.24
Maximum Value	0.48	0.4	1.7	0.06	0.33

1 Approximate Comparison Table Free-Cutting Structural Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

France

European Standard

Russia

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

NF EN/NF

Numerical Grade

GOST

BS EN/BS

Y40Mn

L20409

SUM42

1141

G11410

44SMn28

40M5

44SMn28

1.0762

А10Г

212M44

2 Approximate Comparison Table Free-Cutting Structural Steel

China	International Organization for Standardization	European Standard		Russia
GB	ISO	EN	Numerical Grade	GOST
Y40Mn	44SMn28	44SMn28	1.0762	A40G А40Г

3 Approximate Comparison Table Free-Cutting Structural Steel

China	Japan	United States	International Organization for Standardization	Germany		France	European Standard		Russia	United Kingdom
GB	JIS	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
Y40Mn	SUM42	1141 1139	44SMn28 35SMn20	38SMn28	1.0760	38SMn28	38SMn28	1.0760	A40Г	38SMn28

4 Approximate Comparison Table Free-Cutting Structural Steel

China	Japan	United States	International Organization for Standardization
GB	JIS	ASTM/AISI	ISO
Y45MnS GB/T 8731-2025	SUM43 JIS G4804-2021	1144 ASTM A29/A29M-20	44SMn28 ISO 683-4-2016

44SMn28 Corresponding Standards(Same grade name, different standards)

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