Steel Bar

We offer a wide range of wires and bars, which are available in various diameters and length parameters. Furthermore, our products are in bright, polish & black finishings. With their different forms, we provide them with value added services. Our specialized products are certified by standard laboratory tests, third party inspection & manufacturing tests. The similar grades of foreign countries China 4Cr5MoSiV1 America H13 Japan SKD61 German X40CrMoV51 (1.2344) Bohler W302 Chemical component (%) Standard C Mn Si Cr P S Mo V GB/T1299-2000 0.32-0.45 0.20 /0.50 0.80 /1.20 4.75 /5.50 <=0.030 <=0.030 1.30 /1.75 0.80 /1.20 Specialty Harden and air cooling steel, 600`C work, high rigidity, high endurance, anti-heating, anti-cracking, electric sediment and middle-melting steel, compact structure, refined in electric cooker, quality of steel is pure, owned good character of equal direction Use Extrusion mold of aluminum and magnesium, die-casting mold, especially adapt to the mold in large and complicated form. Extrusion mold of copper alloy, die-casting mold Hot pressing machine mold Heat treatment Quench:1000-1040`C via 600`C and 850`C, preheating oil or wind cooling Temper temperature and rigidity HBC(reference) quench hardening 108-300`C 450-500`C 550-5700`C 53-55 51-52 53-54 50-52 Temper temperature should be higher than working temperature in order to stabilize the working size of mold Heat up to 650`C of average temperature in order to eliminate the machined stress, 500`C air cooling after electric cooker cooling Tempering, 800-850`C,slow cooling after diathermia Dimension(mm) 20-600 The state of leaving factory HBS<=235