# 1.4001 (X7Cr14)

### Classification

Country Section Category
Germany Stainless and Heat Resisting Steels Stainless Steel with Ni < 2.5% without Mo, Nb and Ti

### Chemical composition

Standard Fe, % Si, % Mn, % Cr, % P, % C, % S, %
82.845–87 < 1 < 1 13–15 < 0.045 < 0.08 < 0.03

### Physical characteristics

Temperature, °C $E\cdot 10^{9}$, $MPa$ $\alpha\cdot 10^{6}$, $K^{-1}$ $\varkappa$, $\frac{W}{m\cdot K}$ $\rho$, $\frac{kg}{m^3}$ $c\cdot 10^{-3}$, $\frac{J}{kg\cdot K}$ $R\cdot 10^{-6}$, $\Omega\cdot m$
20 216 30 7700 0.46 0.6
100 10.5
200 11
300 11.5
400 12
500 12

### Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $\sigma_{0.2}$, $MPa$ $\epsilon_L$, % $\psi$, % Treatment
< 245 < 20 < 60 Annealing

### Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
P % Phosphorus
C % Carbon
S % Sulfur

### Description of physical characteristics

Parameter Units of measurement Description
$E\cdot 10^{9}$ $MPa$ Elastic modulus
$\alpha\cdot 10^{6}$ $K^{-1}$ Coefficient of thermal (linear) expansion (range 20°C–T)
$\varkappa$ $\frac{W}{m\cdot K}$ Coefficient of thermal conductivity (the heat capacity of the material)
$\rho$ $\frac{kg}{m^3}$ The density of the material
$c\cdot 10^{-3}$ $\frac{J}{kg\cdot K}$ The specific heat of the material (range 20°C–T)
$R\cdot 10^{-6}$ $\Omega\cdot m$ Electrical resistivity

### Description of mechanical properties

Parameter Units of measurement Description
$\sigma_{0.2}$ $MPa$ Tensile stress required to produce a total elongation of 0.2%
$\epsilon_L$ % Elongation at break (longitudinal)
$\psi$ % Reduction in cross section on fracture