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Poland PN 20HMFTB Steel for elevated temperature service -- Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20HMFTB / 20 HMFTB
Category Grade Standard Region/Area Standard Content
Metals 20 HMFTB PN H84024 Poland Steel for elevated temperature service -- Grades

Chemical composition(mass fraction)(wt.%) of the 20 HMFTB

Element Min Max Similar

Mechanical Properties of steel grade 20 HMFTB

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)
137 (≥) 717 (≥) 13 23 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 20 HMFTB

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
11 - -     0.14 -  
934 727 - 23.3 423   -  
841 - 12 43.2   133 222

Heat Treatment of steel grade 20 HMFTB

Heat treated : 1768°C - 1627°C

Technological Curves of steel grade 20 HMFTB

Cross Reference Table (Equivalent Grade) of 20 HMFTB

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