Custom SCM435 Alloy Steel Parts

SCM435 (JIS) is equivalent to AISI 4135, 34CrMo4 (DIN), and 35CrMo (GB). These chromium-molybdenum alloy steels share similar chemical composition and mechanical properties, making them interchangeable for most applications with proper verification.

Yes, SCM435 can be welded but requires preheating to 200-300°C and post-weld heat treatment to prevent cracking. Use low-hydrogen electrodes and control cooling rates. For critical applications, we recommend consulting our engineering team for proper welding procedures.

We offer comprehensive heat treatment including quenching and tempering (Q&T), carburizing, nitriding, and induction hardening. Q&T can achieve tensile strengths exceeding 1000 MPa, while surface hardening provides wear resistance with tough core properties.

SCM435 has slightly lower machinability than carbon steel due to higher hardness, but still machines well with appropriate tooling and cutting parameters. The superior mechanical properties and hardenability justify the trade-off for applications requiring high strength and toughness.

Common surface treatments include black oxide coating for corrosion resistance, zinc plating for fasteners, phosphate coating before painting, and hard chrome plating for wear resistance. Selection depends on your application environment and performance requirements.

Yes, we provide complete material traceability including mill certificates with chemical analysis, mechanical property test reports, heat treatment records, and dimensional inspection reports. All documentation meets international standards for quality assurance and traceability.