45 U20452 45# - GB /T 699-2015

Grade	45
China ISC	U20452
Other Names
Corresponding Standard	GB /T 699-2015 Quality carbon structure steels
Brand/Supplier	-> BENSTEEL
Classification	Carbon Steel
Properties	Strength Machinability
Density	7.85 g/cm³

45 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.42	0.17	0.5	-	-	-	-	-
Maximum Value	0.5	0.37	0.8	0.035	0.035	0.25	0.3	0.25

45 Mechanical Properties

diameter(thickness) d mm	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
d=25 (Sample size)	Normalizing + Quenching + Tempering	≥600	≥355	≥16	≥40	Unprocessed Steel ≤229	KU2 ≥39
						Annealed Steel ≤197

1 Approximate Comparison Table High-Quality Carbon Structural 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

BS EN/BS

U20452

S45C

SM45C

1045

G10450

C45E4

C45E
Ck45

1.1191

C45E
XC48

1660

C45E
080M46

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN	Numerical Grade
45	S45C	C45	C45	1.0503

3 Approximate Comparison Table Non-Alloy Steel for Quenching and Tempering

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN	Numerical Grade
45	S45C	C45E	C45E	1.1191

4 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
45	S45C	1042 1045 Gr.1043	C45	C45	AF65C45 C45	C45	1.0503	45	1650	070M46 50HS

5 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
45H 45	S45C	1045	C45E4	Ck45	XC45 XC48H1	C45E	1.1191	45	1672	080M46 CFS8

6 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	France	Russia	United Kingdom
GB	JIS	ASTM/AISI	ISO	NF EN/NF	GOST	BS EN/BS
GB/T 699-1999 45	S45C	1045	ISO 630-1:1987 C45 C45E4 C45M2	C45 XC45	45	060A42 060A47

7 Approximate Comparison Table High-Quality Carbon Structural Steel

China	European Standard
GB	EN	Numerical Grade
45	C45R	1.1201

8 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Germany
GB	DIN EN/DIN
45	CF45

45 Corresponding Standards(Same grade name, different standards)

1	GB /T 699-1999
	45 U20452 45#
2	GB /T 699-2015
	45 U20452 45#
3	GOST 1050-1988
	45
4	GB /T 17107-1997
	45
5	NB /T 20008.12-2010
	45
6	Q/BQB 517-2018
	45
7	GB /T 3078-2019
	45 45#
8	GB /T 710-2008
	45 U20452 45#
9	GB /T 711-2017
	45 45#
10	HB /Z 136-2000
	45
11	DL /T 439-2018
	45
12	GB /T 41157.2-2022
	45 45
13	GB /T 13237-2013
	45
14	JB /T 6908-2020
	45 U20452
15	GB 3522-1983
	45

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