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Home Material GB /T 3078-2019
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Grade 45
Other Names
Corresponding Standard GB /T 3078-2019
Quality structural steel cold drawm bars
Classification Carbon Steel
45 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW
Delivery condition Annealing, Bright Annealing, High-Temperature Tempering or Normalizing and Tempering ≤229
Delivery condition Cold Drawing, Cold Drawing and Polishing ≤255
Delivery condition Cold Drawing ≥635 ≥6 ≥30
Delivery condition Annealing ≥540 ≥13 ≥40
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
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
45 U20452 S45C S45C SM45C 1045 G10450 C45E4 C45E
Ck45 		1.1191 C45E
XC48 		45 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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