Description
Hot work, chromium-molybdenum type tool steel that exhibits excellent resistance to softening at elevated tempertaure. This grade is very reistant to thermal fatique cracking (heat cracking), and can be water cooled in service.
Applications
It is recommended for difficult hot work tooling applications such as hot punches, forging dies, hot shear blades, extrusion tooling.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 207, 176 (at 500oC), 165 (at 600oC)
Density [g/cm3]: 7.88, 7.69 (at 500oC), 7.65 (at 600oC)
Thermal conductivity [W/m.K]: 30.0, 30.1 (at 500oC), 29.7 (at 600oC)
Electric resistivity [Ohm mm2/m]: 0.37, 0.78 (at 500oC), 0.89 (at 600oC)
Specific heat capacity[J/g.K]: 0.46, 0.55 (at 500oC), 0.59 (at 600oC)
Soft Annealing
Heat to 780-810oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 600-650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment. Hardness after quenching is 44-54 HRC.
Hardening
Harden from a temperature of 1010-1050oC followed by air, oil quenching or warm bath quenching 450-450oC.
Forging
Hot forming temperature: 1100-900oC.
Machinability
90-95% of a 1% carbon steel.
Corrosion Resistance
Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.
Company information
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
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