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Description

Russia GOST 25-20Л Specialsteel Russia TY standard grades and chemical compositions of the high temperature alloy castings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 25-20Л
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 25-20Л GOST Russia Russia TY standard grades and chemical compositions of the high temperature alloy castings

Chemical composition(mass fraction)(wt.%) of the 25-20Л

C Cr Al Mo Ti Co W Ni Nb Fe B Ce V Zr Mn Si S P
≤0.18 22.00 -26.00 ≤ ≥ ≤ ≥ ≤ ≥ ≤ ≥ ≤ ≥ 17.00 -21.00 ≤ ≥ ≤ ≥ ≤ ≥ ≤ ≥ ≤ ≥ ≤ ≥ 0.70 -1.50 0.80 -2.00 ≤0.025 ≤0.025

Mechanical Properties of steel grade 25-20Л

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)
289 (≥) 555 (≥) 42 12 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade 25-20Л

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
13 - -     0.42 -  
217 496 - 22.3 124   -  
233 - 12 42.2   142 232

Heat Treatment of steel grade 25-20Л

Heat treated : 1737°C - 1434°C

Technological Curves of steel grade 25-20Л

Cross Reference Table (Equivalent Grade) of 25-20Л

Grade Standard Country Application
25-20Л

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