Core Features

· Material Performance

· Carbon content 0.62%-0.70%, manganese 0.90%-1.20%. Cold-rolled structure is dense with tensile strength ≥850MPa, yield strength ≥690MPa, elongation ≥10%, balancing rigidity and toughness.

· Hardness HB 280-320, heat-treatable to HRC 42-48, suitable for high-frequency welding and stamping. Formed substrate has 30% higher bending resistance.

· Cold Rolling Precision

· Thickness tolerance ±0.02mm (0.5-3mm 规格), surface roughness Ra≤0.8μm, meeting laser welding flatness requirements.

· Rolled by multi-roll cold mill, horizontal/vertical property variation ≤5%, ensuring substrate balance at high speeds.

· Surface Treatment

· Annealed to remove internal stress, coated with rust-proof oil (salt spray test ≥24h). Optional copper/zinc plating improves welding strength (copper layer 5-10μm, bonding force ≥450MPa).

Application Scenarios

· Saw Blade Substrate Manufacturing: Raw material for laser brazing and high-frequency brazing saw blades, suitable for 100-600mm diameter production.

· Elastic Component Processing: Making springs and shims, leveraging 65Mn's high elasticity for vibration-resistant applications.

· Mechanical Parts: As wear-resistant linings and stamping materials for agricultural and textile machinery.

Technical Parameters

Product Advantages

· Process Adaptability: Direct stamping/laser cutting with burr ≤0.05mm, reducing secondary grinding.

· Performance Consistency: Mechanical property variation ≤3% per batch, ensuring substrate uniformity with repeat positioning accuracy ±0.01mm.

· Cost Efficiency: Cold rolling reduces heat treatment energy consumption, material utilization ≥95%, 15% cost lower than hot-rolled plates.

· Environmental Certification: Complies with RoHS, lead/cadmium-free, suitable for export-oriented saw blade substrates.