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12H18N12M3TL

Russia GOST 12H18N12M3TL Steel castings. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12H18N12M3TL / 12H18N12M3TL
Category Grade Standard Region/Area Standard Content
Metals 12H18N12M3TL GOST 977 Russia Steel castings. General specifications

Chemical composition(mass fraction)(wt.%) of the 12H18N12M3TL

Element Min Max Similar

Mechanical Properties of steel grade 12H18N12M3TL

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
346 (≥) 172 (≥) 43 32 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade 12H18N12M3TL

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.23 -  
287 195 - 12.3 232   -  
787 - 22 23.2   322 213

Heat Treatment of steel grade 12H18N12M3TL

Heat treated : 1242°C - 1618°C

Technological Curves of steel grade 12H18N12M3TL

Cross Reference Table (Equivalent Grade) of 12H18N12M3TL

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