Structural steel including:alloy structural steel, carbon structural steel, low carbon alloy structural steel, heat resistant structural steel, etc.
Good quality carbon structural steel compared with normal carbon structural steel, P,S and other unmetal chemical is little.This kind of steel including three series based on Carbon content and application:
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Carbon ≤0.25% of mild steel, espencially the 08F and 08AL that Carbon content less 0.1%, because it has good impact and welding performance, could be widely used in vehicle and boiler.20G is the main material to produce common boiler.Beside, mild steel is widely used as carburizing steel, used to produce mechanism manufacture industry.
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The steel with carbon 0.25%-0.6% is medium carbon steel, often used in tempering conditon, used to produce machine parts.The steel would get comprehensive mechanical properties after tempering to 22-34HRC, easy to cut.
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Carbon >0.6% is high carbon steel, mainly used in produce spring,gear,roller.Carbon between 0.65%-1.35%, it would get high carbon and wear resistance after heat treatment, mainly used in produce tools, cutting tools,moulds and measure.
Standard:
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Standard
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GB
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ASTM
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JIS
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DIN/EN
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Q235A
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A36
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SS400
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S235JR 1.0038
|
|
Q235B
|
S235JO 1.0114
|
|
Q235C
|
S235J2 1.0117
|
|
Q235D
|
S235JR 1.0038
|
|
Q345A
|
A572 Gr.50
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SPFC 590
|
E355 1.0060
|
|
Q345B
|
S355JR 1.0045
|
|
Q345C
|
S355JO 1.0553
|
|
Q345D
|
S355J2 1.0577
|
|
Q345E
|
S355NL 1.0546
|
|
30CrMo
|
4130
|
SCM430
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25CrMo4 1.7218
|
|
40CrMo
|
4140
|
SCM440
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42CrMo4 1.7225
|
|
20CrMn
|
5120
|
SMnC420
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20MnCr5 1.7147
|
|
45CrNiMoVA
|
4340
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SNCM439
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36CrNiMo4 1.6511
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Size range:
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Thickness mm
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Width mm
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Length
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Hot rolled
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1.0-580
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≤4300
|
as agreement
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|
Cold Rolled
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0.1-3.0
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≤1500
|
as agreement
|
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Galvanize
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0.1-3.0
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≤1250
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as agreement
|
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Provide welding, cutting, bending and precessing service.
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More than 30,000 Tons stock.
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Lowest price in China market.
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MTC would be provided.