Steel 12GS
Description
Steel 12GS
Steel 12GS: brand of steels and alloys. Below is the systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel 12GS.
General information about steel 12GS
| Substitute brand |
| steel: 12G2A, 14G2A, 15GS |
| Delivery type |
| thick sheet GOST 19282−73, GOST 19903−74. Strip GOST 82−70. Thin sheet GOST 17066−80, GOST 19903−74. |
| Application |
| parts made by drawing, forging, stamping. |
Chemical composition of steel 12GS
| Chemical element |
% |
| Nitrogen (N), no more |
0.008 |
| Silicon (Si) |
0.5−0.8 |
| Manganese (Mn) |
0.8−1.2 |
| Copper (Cu), no more |
0.30 |
| Arsenic (As), no more |
0.08 |
| Nickel (Ni), no more |
0.30 |
| Sulfur (S), no more |
0.040 |
| Carbon (C) |
0.09−0.15 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of steel 12GS
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Sheets and strips (cross samples) |
<10 |
315 |
460 |
26 |
| Hot rolled sheets |
2−3.9 |
|
460 |
22 |
Mechanical properties depending on the tempering temperature
| vacation t, ° С |
σ 0.2, MPa |
σ B, MPa |
ψ,% |
| Rod with a diameter of 19 mm. Hardening. Cooling at a speed of 200 deg / s. Exposure on vacation 1 h |
| 200 |
1080 |
1130 |
55 |
| 300 |
1040 |
1080 |
55 |
| 400 |
980 |
1030 |
65 |
| 500 |
690 |
780 |
68 |
| 600 |
610 |
730 |
75 |
| Rod with a diameter of 19 mm. Hardening. Cooling at a speed of 45 deg / s. Exposure on vacation 1 h |
| 200 |
720 |
850 |
60 |
| 300 |
640 |
760 |
65 |
| 400 |
610 |
730 |
69 |
| 500 |
530 |
690 |
|
| 600 |
420 |
590 |
70 |
Technological properties of steel 12GS
| Forging temperature |
| The beginning is 1200, the end is 850. |
| Weldability |
| weldable without restrictions. |
| Tendency to release ability |
| not inclined |
| Flock sensitivity |
| not sensitive |
