U8G
U8G forging hardness (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 |
97.432–98.7 |
0.17–0.33 |
0.33–0.58 |
< 0.2 |
< 0.25 |
< 0.25 |
< 0.03 |
0.8–0.9 |
< 0.028 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
| Tape |
|
0.08–3 |
|
annealing |
750 |
10 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Round |
GOST 1435-99 |
|
0–0 |
Analogues
| USA |
Germany |
Japan |
France |
United Kingdom |
|---|
| W1-8 |
1.1525 (C80W1) |
SK5 |
Y1-90 |
BW1A |
Standards
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) |