Performance and use of No. 10 steel

Posted:2021-07-12 15:36:58

No. 10 steel is delivered without heat treatment or heat treatment (annealing, normalizing or high temperature tempering). If the delivery is required to be delivered under heat treatment, it should be indicated in the contract, and if it is not specified, the No. 10 steel shall be delivered without heat treatment.

No. 10 steel executive standard: GB/T711
Chemical composition of No. 10 steel:
Carbon C: 0.07-0.14
Silicon Si: 0.17-0.37
Manganese Mn: 0.35-0.65
Sulfur S: ≤0.04
Phosphorus P: ≤0.35
Chromium Cr: ≤0.15
Nickel Ni: ≤0.25
Copper Cu: ≤0.25

Mechanical properties of No. 10 steel: 　　
Tensile strength σb (MPa): ≥335
Yield strength σs (MPa): ≥205
Elongation δ5 (%): ≥31
Reduction of area ψ (%): ≥55,
Hardness: not heat-treated ≤137HBS,
Sample size: 25mm longitudinally

No. 10 steel heat treatment specification and metallographic structure:
Heat treatment specification: normalizing, 910℃, air cooling
Metallographic structure: ferrite + pearlite.

No. 10 steel can be used to manufacture parts that require low stress and high toughness, such as car bodies, receptacles, deep drawing vessels, pipes, gaskets, etc., and can be used for cold rolling, cold stamping, cold heading, cold bending, and hot forming. It can be formed by rolling and other processes, and can also be used as carburized parts and carbonitrided parts with low core strength.

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