Steel 27ХН3МФА (27ХН3МФ)
Designation
Description
27ХН3МФА steel is used: for the manufacture of billets of shafts and one-piece rotors stationary and transport steam turbines.
Standards
Chemical composition
Fe is the basis.
According to TU 108-1029-81 the chemical composition is given for steel grade 27HN3MFA. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%. For metal VDP, the deviation of manganese content +0.10% / - 0.15% is allowed. The deviation of the silicon content in the metal VDP and ESR is allowed within ± 0.050%. In the ESR steel, the sulfur content should not be more than 0.015%.
According to TU 108-1029-81 the chemical composition is given for steel grade 27HN3MFA. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%. For metal VDP, the deviation of manganese content +0.10% / - 0.15% is allowed. The deviation of the silicon content in the metal VDP and ESR is allowed within ± 0.050%. In the ESR steel, the sulfur content should not be more than 0.015%.