Steel35G26X14M (Steel EP488)

No foreign analogues

Designed for the manufacture of forgings, turbine blades, fasteners, long-term working at temperatures up to 630 degrees C.

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
GOST 4543-71 54.495–61.32 < 0.7 25–28 12.5–14.5 < 0.6 < 0.035 0.33–0.4 < 0.02 0.85–1.25

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 205 13.9 7640 820

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Round GOST 5949-18 60 Transverse 650–700 290–300 35–40

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Rolling Standard Classifiers Value, HRC
Rod GOST 5949-18 180–220

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Difficult to weld sensitive loathsome

Limit operating modes

Standard Температура, °C
GOST 4543-71 < 630

Heat Treatment Modes

Treatment
Heating 1140 - 1180oC, water, aging 750 - 800oC, 15h, air,

Standards

Standard Description
GOST 4543-71

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ 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

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures