13H14N3V2FR (EI736, H14NVFR)

High-loaded parts operating at high humidity.

highly loaded parts, long operating at temperatures up to 550 ° C. in conditions of high humidity; scaling temperature of 700 ° C.; martensitic steel grade

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, % V, % P, % C, % S, % W, %
GOST 5632-72 77.651–82.32 < 0.6 < 0.004 < 0.6 13–15 < 0.05 2.8–3.4 0.18–0.28 < 0.03 0.1–0.16 < 0.025 1.6–2.2

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Rod GOST 5949-75 < 60 930 735 14 55 880 Hardening of 1040-1060 ° C, the oil, leave 640-680 ° C, air
Rod GOST 5949-75 1130 885 12 50 690 Hardening of 1040-1060 ° C, air Accommodation 540-580 ° C, air

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Rod GOST 5949-75 annealing 302

Standards

Standard Description
GOST 5632-72
TU 14-1-3297-82

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness