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Grade 55
Corresponding Standard GB 3522-1983
Cold-rolled quality carbon structural steel strips
Classification Carbon Steel
55 Mechanical Properties
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
Cold-worked steel strip (Y) 735~1078
Annealed steel strip (T) 441~735 ≥12
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
55 U20552 S55C S55C SM55C 1055
(ASTM) 		G10550 C55E4 C55E
Ck55 		1.1203 C55E
XC55 		55 1665 C55E
070M55
2 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
55
(GB/T 699-1999) 		S55C 1055 C55
C55E4
C55M2
(ISO 630-1:1987) 		C55
XC55 		55 060A57
070M55
3 Approximate Comparison Table High-Quality Carbon Structural Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM/AISI ISO EN Numerical Grade
55
(GB/T 699-2015) 		U20552 S55C
(JIS G4051:2005)
(JIS G3506:2004) 		1055
(ASTM A29/A29M:2005) 		C55E4
(ISO 683-18:1996) 		C55E
(EN 10083-1:1991+A1:1996)
(EN 10084:1998) 		1.1203
4 Approximate Comparison Table High-Quality Carbon Structural Steel
China Germany
GB DIN EN/DIN
55 CF53
55 Corresponding Standards(Same grade name, different standards)
1 GB /T 699-1999
55 U20552 55#
2 GB /T 699-2015
55 U20552
3 GOST 1050-1988
55
4 GB /T 17107-1997
55
5 GB /T 3078-2019
55 55#
6 GB /T 711-2017
55 55#
7 GB /T 13237-2013
55
8 GB 3522-1983
55

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