NV D32 ore carrier steel,Our company was founded in 2000, which initially committed to providing high-quality steel products for China's rapid infrastructure construction. With the advantages of steel resources and good reputation in the domestic market, combined with the huge demand for steel in the international market, we began to export steel to the international market, opening up the international steel market.
The strength indexes of NV D32 ore carrier steel pipeline steel mainly include tensile strength and yield strength. At the same time, the yield strength ratio (yield strength to tensile strength ratio) of pipeline steel is also required, which is generally in the range of 0.85-0.93. Pipeline steel shall have enough high impact toughness (crack initiation and crack arrest toughness). For the base metal, when the toughness of the NV D32 ore carrier steel material meets the requirements of crack arrest, its toughness generally can also meet the requirements of crack prevention.
Advantages of NM360 wear-resistant steel plate: NM360 steel has high strength: generally its yield strength is above 300MPa 2 High toughness: The elongation is required to be 15% -20%, and the room temperature impact toughness is greater than 600kJ / m ~ 800kJ / m For large welded components, high fracture toughness is also required 3 NM360 steel plate has good welding performance and cold forming performance 4 Low cold and brittle transition temperature,NV D32 ore carrier steel.
NV D32 ore carrier steel,Blast furnace ironmaking is a traditional ironmaking method based on coke energy It cooperates with converter steelmaking and is the main method of producing steel at present This dominance of blast furnace ironmaking is not expected to change for quite a long time The essence of blast furnace ironmaking is the reduction of iron Besides, coke is used as fuel and reducing agent At high temperatures, iron ore or iron-containing raw materials are reduced from an oxide or mineral state to liquid pig iron,NV D32 ore carrier steel.
40Cr grade under GB/T 3077-2015 standard is a alloy steel bar material. 40Cr alloy chemical composition (C: 0.37 ~ 0.44, Si: 0.17 ~ 0.37, Mn: 0.50 ~ 0.80, Cr: 0.80 ~ 1.10, Ni: ≤0.30, P: ≤0.030, S: ≤0.030, Cu: ≤0.30, Mo: ≤0.10). Heat treatment: First quenching heating temperature (℃): 850; coolant: oil; Temperature heating temperature (℃): 520. 40Cr steel tensile strength (σb / MPa): ≥980. Yield point (σs / MPa): ≥785
After the order is finished, our after-sales service center will send an email to make a feedback about our steel products' quality We have phone service every three months to remind our customers of the possible problems and collect advices or suggestions in quality and service Upon the collection of advices or suggestions, our after-sales service will quickly make technical solutions to wipe out the customer problem,NV D32 ore carrier steel.
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