30H3MA

For the manufacture of power parts of rocket engines, including those which are nitrided, operating at temperatures of up to 400−500 ° C; tubular billet for the manufacture of pipes in the chemical and power engineering.

Classification

Country Section Category
CIS, Russia, Ukraine Structural steel Alloyed structural steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ti, % Cu, % Ni, % V, % P, % C, % S, % Mo, % W, %
TU 14-1-950-74 93.95–96.21 0.17–0.37 0.3–0.6 2.8–3.2 < 0.03 < 0.25 < 0.5 < 0.05 < 0.025 0.27–0.35 < 0.025 0.25–0.35 < 0.3

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}, MPa \sigma_{Y}, MPa \psi, % KCU\cdot 10^{3}, \frac{J}{m^2} d5, % Treatment
Rod TU 14-1-950-74 Ø 25 980 835 50 980 15 Hardening and tempering

Analogues

Germany
Almenit 8515

Standards

Standard Description
TU 14-1-950-74

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ti % Titan
Cu % Copper
Ni % Nickel
V % Vanadium
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum
W % Tungsten

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
\sigma_{Y} MPa Yield strength
\sigma _{U} MPa Ultimate tensile strength
\psi % Reduction in cross section on fracture
KCU\cdot 10^{3} \frac{J}{m^2} Impact toughness