Precision Alloy 31H3X

No foreign analogues

Used for the manufacture of structures and pipelines operating at low temperatures; TKLR * 1,000,000 in the temperature range from -258 to +20 and from +20 to +100 ºC no more than 1.0−2.0 [1 / ºC]

Classification

Country Section Category
CIS, Russia, Ukraine Precision alloys With given TCLE

Chemical composition

Standard Fe, % Si, % Mg, % Ca, % Mn, % Cr, % Cu, % Ni, % Al, % ET, %
GOST 10994-74 64.075–66.8 < 0.18 < 0.05 < 0.025 0.2–0.4 2.5–3.3 < 0.05 30.5–31.8 < 0.05 < 0.07

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 145 8200 600

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Tape GOST 10994-74 <2.0 Transverse 950 450 15–20

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Tape GOST 10994-74 110–130

Casting and technological parameters

melting point, °C
1450

Standards

Standard Description
GOST 10994-74

Description of chemical elements

Element Units of measurement Description
ET % Total other items
Fe % Iron
Si % Silicon
Mg % Magnesium
Ca % Calcium
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
Al % Aluminium

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength

Description of the casting and technological parameters

Parameter Units of measurement Description
melting point °C The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa