E⋅109
MPa
α⋅106
K−1
ρ
kgm3
R⋅10−6
Ω⋅m
σU
MPa
σ0.2
MPa
ϵL
KU
J

1.3964 (X2CrNiMnMoNNb21-16-5-3)

Classification

Country Section Category
Germany Alloy Miscellaneous Steels Materials with Special Physical Properties and with Ni

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Nb, % Mo, % N, %
50.335–57.8 < 1 4–6 20–21.5 15–17 < 0.025 < 0.03 < 0.01 < 0.25 3–3.5 0.2–0.35

Information on suppliers

Physical characteristics

Temperature, °C E\cdot 10^{9}E⋅109, MPaMPa \alpha\cdot 10^{6}α⋅106, K^{-1}K−1 \rhoρ, \frac{kg}{m^3}kgm3 R\cdot 10^{-6}R⋅10−6, \Omega\cdot mΩ⋅m
20 195 7900 0.81
100 15.7
200 17
300 17.5
400 17.5

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}σU, MPaMPa \sigma_{0.2}σ0.2, MPaMPa \epsilon_LϵL, % KUKU, JJ Treatment
700–950 365–430 < 35 > 85 hardening

Standards

Standard Description
SEW390
WW

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
Nb % Niobium
Mo % Molybdenum
N % Nitrogen

Description of physical characteristics

Parameter Units of measurement Description
E\cdot 10^{9}E⋅109 MPaMPa Elastic modulus
\alpha\cdot 10^{6}α⋅106 K^{-1}K−1 Coefficient of thermal (linear) expansion (range 20°C–T)
\rhoρ \frac{kg}{m^3}kgm3 The density of the material
R\cdot 10^{-6}R⋅10−6 \Omega\cdot mΩ⋅m Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
\sigma_{0.2}σ0.2 MPaMPa Tensile stress required to produce a total elongation of 0.2%
\sigma _{U}σU MPaMPa Ultimate tensile strength
\epsilon_LϵL % Elongation at break (longitudinal)
KUKU JJ Impact energy