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PH 620 TQ

International ISO PH620TQ 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: PH620TQ / PH 620 TQ
Category Grade Standard Region/Area Standard Content
Metals PH 620 TQ 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 PH 620 TQ

Element Min Max Similar

Mechanical Properties of steel grade PH 620 TQ

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)
731 (≥) 436 (≥) 13 43 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade PH 620 TQ

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
14 - -     0.31 -  
935 782 - 24.3 343   -  
161 - 41 31.2   331 144

Heat Treatment of steel grade PH 620 TQ

Heat treated : 1861°C - 1415°C

Technological Curves of steel grade PH 620 TQ

Cross Reference Table (Equivalent Grade) of PH 620 TQ

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