[Tinchlik talablari]
| Tur | 60-sinf | 70-sinf |
| Zinarli kuch, min, ksi [MPA] | 60[415] | 70[485] |
| Kuch berish kuchi,AMin, KSI [MPA] | 30[205] | 36[250] |
| 2-sonli cho'zish. [50 mm], min,% | 22 | 18 |
| Mintaqaning pasayishi, MIN,% | 35 | 24 |
| A - - ostida - {{2} {}} ostida 0,5% kengaytma bilan belgilanadi. | ||
