1.5662 (X8Ni9)
Classification
| Country |
Section |
Category |
| Germany |
Structural, Pressure Vessel and Engineering Steels |
Ni |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Ni, % |
V, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
|
88.575–91.2 |
< 0.35 |
0.3–0.8 |
8.5–10 |
< 0.05 |
< 0.02 |
< 0.1 |
< 0.005 |
< 0.1 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
$$KV_{L}$$, $$J$$ |
$$KV_{T}$$, $$J$$ |
Treatment |
|---|
|
|
< 50 |
|
normalization |
640–840 |
|
|
|
100 |
70 |
|
|
|
< 30 |
|
normalization |
|
490 |
|
|
|
|
|
|
|
30–50 |
|
normalization |
|
480 |
|
|
|
|
|
|
|
< 30 |
|
moderate hardening |
|
490–585 |
|
50 |
120 |
100 |
|
|
|
30–50 |
|
moderate hardening |
|
480–575 |
|
|
|
|
|
|
|
< 50 |
|
|
|
|
18 |
|
|
|
|
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
| $$\psi$$ |
% |
Reduction in cross section on fracture |
| $$KV_{L}$$ |
$$J$$ |
Impact energy (longitudinal) |
| $$KV_{T}$$ |
$$J$$ |
Impact energy (transverse) |