Designation
| Name |
The value |
| Designation GOST Cyrillic |
30ГСЛ |
| Designation GOST Latin |
30GCL |
| Transliteration |
30GSL |
| By chemical elements |
30MnС |
Description
30GSL steel is used: for the manufacture of castings, gears, rollers, clips, gear rims, levers, flanges, pulleys, sectors, columns, road wheels and other parts for durability and working parts for wear.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
GOST 977-88, OST 24.920.01-80, OST 5Р.9285-95, TU 24-1-12-181-75 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 977-88 |
0.25-0.35 |
≤0.04 |
≤0.04 |
1.1-1.4 |
- |
0.6-0.8 |
- |
Rest |
- |
| OST 5Р.9285-95 |
0.25-0.35 |
≤0.04 |
≤0.04 |
1.1-1.4 |
≤0.3 |
0.6-0.8 |
≤0.3 |
Rest |
≤0.3 |
Fe is the basis.
According to OST 5P.9285-95, the content of nickel and chromium up to 0.50%, copper to 0.40% and molybdenum to 0.12% is not a defect condition provided that the requirements of the standard are observed and if there are no special instructions in the technical conditions of the order or drawing .
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Castings for shipbuilding. Quenching in water from 900-930 °C + vacation at 570-650 °C, cooling in water |
| - |
≥400 |
≥650 |
≥14 |
≥30 |
≥500 |
187-241 |
| Castings for shipbuilding. Normalization at 920-950 °C + vacation at 570-650 °C, air cooling |
| - |
≥350 |
≥600 |
≥14 |
≥25 |
≥300 |
170-229 |
| Casting. Annealing in air from 920-950 °C + vacation at 570-650 °C, air cooling |
| 100 |
≥392 |
≥638 |
≥14 |
≥30 |
≥491 |
- |
| Casting. Normalization at 870-890 °C + vacation at 570-600 °C, air cooling |
| 100 |
≥343 |
≥589 |
≥14 |
≥25 |
≥294 |
163-229 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
Technological properties
| Name |
The value |
| Weldability |
Welding methods: SMAW, ADS under gas protection electroslag welding. Necessary preheating and subsequent heat treatment. |
| Склонность к отпускной хрупкости |
tend not |
| Flock-sensitive sensitivity |
not sensitive |
| Machinability |
when HB 156 Kn TV.SPL.=1.0 Kn b.St.=0.8 |
