Steel 40KH9S2L

Designation

Name The value
Designation GOST Cyrillic 40Х9С2Л
Designation GOST Latin 40X9C2L
Transliteration 40H9S2L
By chemical elements 40Cr9С2

Description

40KH9S2L steel is used: for the manufacture of castings of parts operating for a long time under load at temperatures up to +700 °C (valves, motors, grates, fasteners); hinged cast chains for rotary kilns, consisting of high-temperature or heat-resistant parts applied in the middle area when the temperature of the gas stream +500−700 °C.

Note

Steel heat-resistant martensitic class.
Heat-resistant steel at temperatures up to +800 °C, heat-resistant at temperatures up to +700 °C.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77, TU 23-0235964-4-87, TU 4112-07507311-010-02
Steel castings В82 GOST 977-88, OST 24.920.01-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 977-88 0.35-0.5 ≤0.03 ≤0.035 0.3-0.7 8-10 2-3 - Rest -
GOST 2176-77 0.35-0.5 ≤0.03 ≤0.035 0.3-0.7 8-10 2-3 ≤0.5 Rest ≤0.3
Fe is the basis.
According to GOST 2176-77 the chemical composition is given for steel grade 40Х9С2Л. Deviations from the norms of chemical composition are allowed: for carbon ± 0.020%; for silicon ± 0.10%; on manganese, copper, chromium and nickel ± 0.10% each; by titanium and tungsten ± 0.050% each; by vanadium, molybdenum and niobium ± 0.020% each.

Technological properties

Name The value
Weldability limited weldability