Q690E material has high strength, good fatigue resistance; high toughness and low brittle transition temperature; good cold forming performance and welding performance. In addition, A573 Grade 58 carbon structural steel, Q690 high strength steel plate and sheet has good corrosion resistance and certain wear resistance. High strength, especially in the normalizing or normalizing plus tempering state has a higher comprehensive mechanical properties.
Cold-forming automobile structural steel S650MC chemical composition (melting analysis)%C: ≤0.12, Si: ≤0.60, Mn: ≤2.00, P: ≤0.025, S: ≤0.015, Al: ≥0.015, Nb: ≤0.09, V: ≤0.20, Ti: ≤0.25, Mo: ≤0.50, B: ≤0.005The mechanical properties Yield strength: ≥650 MPaTensile strength: 700-880 MPaElongation: ≥10%
Our quality and service commitment: A573 Grade 58 carbon structural steel product quality problems, life-long replacement.In the process of using, any time if you find we supplied steel materials not conform to the requirements of technical standards, we can replace it for you free of charge. However, it should be noted that non product quality problems caused by improper use are not covered by the warranty. Please pay attention to the service time commitment as well as the product quality assurance commitment. Because only the products of big brands and reliable enterprises with complete after-sales service system can truly realize the long-term product quality assurance and the whole process of service.
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