High-temperature structural steel.
Quenched and subsequently tempered steel, resistant at higher temperatures, forgings for turbine components up to working temperatures 530oC.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.85
Heat to 650-720oC, cool slowly in furnace.
Harden from a temperature of 880-920oC followed by oil quenching.
Tempering temperature: 580-680oC.
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