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Home Material GB 6479-2013
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Grade Q345D
Corresponding Standard GB 6479-2013
Seamless steel tubes for high-pressure chemical fertilizer equipments
Classification Alloy Steel
Q345D Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu ① Mo V Nb
Minimum Value 0.12 0.2 1.2 - - - - - - - -
Maximum Value 0.18 0.5 1.7 0.025 0.015 0.3 0.5 0.2 0.1 0.15 0.07
1 Approximate Comparison Table Carbon Structural Steel and Engineering Steel
China International Organization for Standardization Germany European Standard United Kingdom
GB ISO DIN EN/DIN EN Numerical Grade BS EN/BS
Q345D S355D St52-3N S355J2C 1.0579 50D8
2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel
China Japan United States Germany France European Standard Sweden United Kingdom
GB JIS ASTM DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS BS EN/BS
Q345D SS490YA A656 ASt52
St52-3N 		1.0577 A52FP S355J2
Fe510D2①
S355J2G4① 		1.0577 2134-01 224-460
3 Approximate Comparison Table Carbon Structural Steel and Engineering Steel
China United States Germany France European Standard Russia Sweden United Kingdom
GB ASTM DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
Q345D A572Gr.50 StE355 E355R S355N
FeE355KGN① 		1.0545 15GF 2134-01 50DD
50E
Q345D Corresponding Standards(Same grade name, different standards)
1 GB /T 1591-2008
Q345D L03454
2 GB 6479-2013
Q345D
3 GB /T 3274-2017
Q345D L03454

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