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PL 255 TN

International ISO PL255TN Steel flat products for pressure purposes - Technical delivery conditions - Part 4: Nickel-alloy steels with specified low temperature properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: PL255TN / PL 255 TN
Category Grade Standard Region/Area Standard Content
Metals PL 255 TN ISO 9328-4 International Steel flat products for pressure purposes - Technical delivery conditions - Part 4: Nickel-alloy steels with specified low temperature properties

Chemical composition(mass fraction)(wt.%) of the PL 255 TN

Element Min Max Similar

Mechanical Properties of steel grade PL 255 TN

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)
626 (≥) 267 (≥) 31 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade PL 255 TN

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
44 - -     0.23 -  
818 134 - 13.3 241   -  
759 - 13 44.2   432 244

Heat Treatment of steel grade PL 255 TN

Heat treated : 1261°C - 1236°C

Technological Curves of steel grade PL 255 TN

Cross Reference Table (Equivalent Grade) of PL 255 TN

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