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Ch 19 N 7 AL

Bulgaria BDS Ch19N7AL Stainless steel castings. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Ch19N7AL / Ch 19 N 7 AL
Category Grade Standard Region/Area Standard Content
Metals Ch 19 N 7 AL BDS 9631 Bulgaria Stainless steel castings. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the Ch 19 N 7 AL

Element Min Max Similar
Si - 1.5000 -
S - 0.0400 -
P - 0.0400 -
Ni 6.0000 8.0000 -
N 0.1000 0.2000 -
Mn - 2.0000 -
Cr 18.0000 20.0000 -
C - 0.1200 -

Mechanical Properties of steel grade Ch 19 N 7 AL

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)
326 (≥) 875 (≥) 43 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade Ch 19 N 7 AL

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 -  
184 719 - 31.3 144   -  
363 - 12 21.2   142 142

Heat Treatment of steel grade Ch 19 N 7 AL

Heat treated : 1114°C - 1754°C

Technological Curves of steel grade Ch 19 N 7 AL

Cross Reference Table (Equivalent Grade) of Ch 19 N 7 AL

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