How long will S235J0W steel structure last not rust outside?

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How long will S235J0W steel structure last not rust outside?

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How much a ton of alloy plates costs depends on the classification of alloy plates. Different alloy plates contain different elements, such as low-alloy steel (the total amount of alloy elements is less than 5%), medium alloy steel (the total amount of alloy elements is 5% - 10%), and high alloy steel (the total amount of alloy elements is more than 10%). If the alloy plates performance is different, the price will be different. The thickness of the alloy plates also affects the price. Besides, S235J0W steel structure, alloy plates price is related to the steel market. With the rise of steel raw materials, the purchase cost will be high and the overall price will be high.

S235J0W steel structure, low alloy high strength steel has good weldability. Welding is the most common method to construct engineering structure, so the steel used in engineering structure requires good welding performance. Low alloy high strength steel has low carbon content, low alloy element content and good plasticity, so it is not easy to produce quenching structure and crack in the weld area, and the addition of Ti, Nb, V can also inhibit the grain growth in the weld area. Therefore, most of the low alloy high strength steels have excellent welding performance and no heat treatment is required after welding.

S235J0W steel structure, Nickel-based alloys are widely used in petrochemical, metallurgy, energy, and machinery because of their high room temperature and high temperature strength, good oxidation and thermal corrosion resistance, excellent creep and fatigue resistance, good structural stability and reliability. , Building materials, medicine, environmental protection and other industries. The company has developed N08825, N06625, N06600, N06690, N06601 and other nickel-based alloy tube blanks and steel pipe products, which have been implemented in batches in the petrochemical industry.

The difference between S235J0W steel structure, 10# seamless steel pipe and 20# seamless steel pipe:
1. Chemical composition
Chemical composition of 10# seamless steel pipe: C: 0.07-0.13, Si: 0.17-0.37, Mn: 0.35-0.65, Cr: 0.15, Ni: 0.30, Cu: 0.25. Chemical composition of 20# seamless steel pipe: C: 0.07-0.23, Si: 0.17-0.37, Mn: 0.35-0.65, Cr: 0.25, Ni: 0.30, Cu: 0.25
2. Mechanical properties
10# seamless steel pipe: tensile strength: 335 MPa, yield strength: 205 MPa, elongation: 31%. 20# seamless steel pipe: tensile strength: 410 MPa, yield strength: 245 MPa, elongation: 25%.

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