σU
MPa
σ0.2
MPa
ϵL
ϵT
KVL
J
KVT
J

1.7378 (7CrMoVTiB10-10)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Cr-Mo with Mo ≥ 0.35%

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Ti, % V, % Al, % P, % C, % S, % Mo, % N, %
94.583–96.1485 0.15–0.45 0.0015–0.007 0.3–0.7 2.2–2.6 0.05–0.1 0.2–0.3 < 0.02 < 0.02 0.05–0.1 < 0.01 0.9–1.1 < 0.01

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}σU, MPaMPa \sigma_{0.2}σ0.2, MPaMPa \epsilon_LϵL, % \epsilon_TϵT, % KV_{L}KVL, JJ KV_{T}KVT, JJ Treatment
Hardening, normalization 565–840 17 15 40 27
< 16 Hardening, normalization 450
16–60 Hardening, normalization 430

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Cr % Chrome
Ti % Titan
V % Vanadium
Al % Aluminium
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum
N % Nitrogen

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)
\epsilon_TϵT % Elongation at break (transverse)
KV_{L}KVL JJ Impact energy (longitudinal)
KV_{T}KVT JJ Impact energy (transverse)