| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TU 14-1-552-72 | 93.685–95.91 | 0.17–0.37 | 0.4–0.7 | 2.1–2.6 | < 0.3 | < 0.4 | 0.3–0.5 | < 0.03 | 0.22–0.29 | < 0.025 | 0.9–1.1 |
| Property |
|---|
| According to TU 14-1-552-72 Note Normalization 1030-1050 ° С, normalization 950-970 ° С, tempering 680 -720 ° С, air cooling |
| According to TU 14-1-552-72 Yield strength: 780 MPa Tensile strength: 670 MPa Elongation: 12% Impact strength KCU at 20 ° C: 49 J / cm2 Relative narrowing: 50% |
| Operational characteristics According to GOST R 54803-2011 Nuts Application temperature: -40 - 540 ° C |
| Operational characteristics According to GOST R 54803-2011 Washers Application temperature: -70 - 540 ° C |
| Performance characteristics According to GOST R 54803-2011 Studs Application temperature: -50 - 540 ° C |
| Calculated Properties Density: 7.84 g / cm3 |
| Germany |
|---|
| 1.7709 (21CrMoV5-7) |
| Standard | Description |
|---|---|
| TU 14-1-552-72 |