0N9

vessels and devices working under pressure at temperatures up to -196 ° C

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Ni, % P, % C, % S, %
TU 14-105-846-2008 89.43–90.88 0.17–0.37 0.45–0.6 8.5–9.5 < 0.02 < 0.06 < 0.02

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
Alloy 720 520 28 82 2530 Double normalization with tempering
Alloy 600 450 27 79 1960 Hardened and tempered

Analogues

Germany USA
G-X 8 Ni 9 X7Ni9

Standards

Standard Description
TU 14-105-846-2008

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur

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