U8GA

Hardness У8ГА after annealing (GOST 1435−99): HB 10 -1 = 187 MPa .

for the production of spring ribbon

Classification

Country Section Category
CIS, Russia, Ukraine Tool steel Carbon Tool Steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % P, % C, % S, %
GOST 1435-99 97.447–98.7 0.17–0.33 0.33–0.58 < 0.2 < 0.25 < 0.25 < 0.025 0.8–0.9 < 0.018

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Tape GOST 2283-79 annealing 740 10
Tape GOST 2283-79 cold-work 740–1180

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 1435-99 annealing 1870

Analogues

Germany
1.1830 (C85W)

Standards

Standard Description
GOST 1435-99

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_L$$ % Elongation at break (longitudinal)