JIS G3445 Carbon Steel Tube for Machine

JIS G3445 carbon steel pipe is a kind of carbon steel pipe for mechanical structure. The following is its specific description: Chemical compositionMainly includes STKM11A, STKM12 (A, B, C), STKM13 (A, B, C), STKM14 (A, B, C) and other grades. Among them, the carbon content of STKM11A is ≤0.12%, the silicon content is ≤0.35%, the manganese content is ≤0.60%, and the phosphorus and sulfur content is ≤0.040%; the carbon content of STKM14A is ≤0.30%, the silicon content is ≤0.35%, the manganese content is 0.30%-1.00%, and the phosphorus and sulfur content is ≤0.040%.Mechanical propertiesThe mechanical properties of different grades are different. The tensile strength of STKM11A is ≥315MPa, the yield strength is ≥175MPa, and the elongation is ≥30%; the tensile strength of STKM14A is ≥510MPa, the yield strength is ≥275MPa, and the elongation is ≥15%.Manufacturing processIt can be manufactured by seamless process, resistance welding process or butt wel…

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