σU
MPa
σP
MPa
ϵL
ψ
KCU103
Jm2

10H11N23T3MR (EP33, X12N22T3MR)

Springs and fastener parts

springs and fasteners with a limited period of work at temperatures up to 700 ° C; austenitic steel

Classification

Country Section Category
CIS, Russia, Ukraine Heat resistant steels and alloys Heat resistant high alloy steel

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Ti, % Ni, % Al, % P, % C, % S, % Mo, %
GOST 5632-72 55.545–65.4 < 0.6 < 0.02 < 0.6 10–12.5 2.6–3.2 21–25 < 0.8 < 0.025 < 0.1 < 0.01 1–1.6

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}σU, MPaMPa \sigma_{P}σP, MPaMPa \epsilon_LϵL, % \psiψ, % KCU\cdot 10^{3}KCU103, \frac{J}{m^2}Jm2 Treatment
Rod GOST 5949-75 880–980 590–685 8–10 10–12 290 Quenching and aging

Standards

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
\sigma _{U}σU MPaMPa Ultimate tensile strength
\sigma_{P}σP MPaMPa Proportionality limit
\epsilon_LϵL % Elongation at break (longitudinal)
\psiψ % Reduction in cross section on fracture
KCU\cdot 10^{3}KCU103 \frac{J}{m^2}Jm2 Impact toughness