|Chemical Composition %|
|0.38 - 0.45||0.50 - 0.80||0.17 - 0.37||<0.035||<0.035||1.60 - 1.90||<0.30||0.30 - 0.40||0.15 - 0.25||<0.30|
|GOST||40ChMFA - 40HMFA - 40KhMFA - 40ХМФА|
|0.37 - 0.44||0.40 - 0.70||0.17 - 0.37||<0.025||<0.025||0.80 - 1.10||<0.30||0.20 - 0.30||0.10 - 0.18||<0.30|
Nickel-free, with high hardening capacity grade classified as machine-building steel, high-temperature boiler steel, as well as low-temperature steel, characterized by good ductility, very high durability and good impact resistance in low temperature ranges.
In many cases materials with a particular chemical composition are replaced by chromium-nickel grades (such as 45HN). 40H2MF is a steel which is hardened in oil, but it is possible to obtain optimum mechanical properties with dimensions up to 250mm. It is mainly used in the manufacture of heavy-duty parts and machine components, as steel for shafts, control levers, differential parts, spindles, bolts, axles, crankshafts, connecting rods, cardan shafts and screws.
As a steel for high temperature applications, the products find application in the manufacture of steam turbine shafts, flanges, high pressure cylinders, single and multi-disk rotors, bolts, nuts and screws. Steel is weldable, susceptible to mechanical cutting and, in addition, does not exhibit temper brittleness.
40ChMFA, 40KhMFA, 40ХМФА