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EU EN 1.7720 Steel castings for pressure purposes的交货技术条件 - 第2部分:在室温和高温下使用的钢种 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.7720 / 1.7720
Category Grade Standard Region/Area Standard Content
Metals 1.7720 EN 10213-2 EU Steel castings for pressure purposes的交货技术条件 - 第2部分:在室温和高温下使用的钢种

Chemical composition(mass fraction)(wt.%) of the 1.7720

Element Min Max Similar

Mechanical Properties of steel grade 1.7720

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)
847 (≥) 529 (≥) 42 13 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade 1.7720

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
33 - -     0.13 -  
176 594 - 44.3 412   -  
227 - 22 21.2   241 222

Heat Treatment of steel grade 1.7720

Heat treated : 1673°C - 1187°C

Technological Curves of steel grade 1.7720

Cross Reference Table (Equivalent Grade) of 1.7720

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