1. Mexanik xossalari
| Mahsulot | Kuchlanish sinovi | |||
|---|---|---|---|---|
| Hosildorlik kuchi (N/mm²) | Mustahkamlik chegarasi (N/mm²) | Cho'zilish [No. 5] (foiz) | ||
| STKR400 | 245 dan kichik yoki teng | 400 dan kam yoki teng | 23 dan kichik yoki teng | |
| STKR490 | 325 dan kichik yoki teng | 490 dan kichik yoki teng | 23 dan kichik yoki teng | |
2. Kimyoviy tarkibi
| Mahsulot | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| STKR400 | 0 dan kichik yoki unga teng.25 | ー | ー | 0 dan kichik yoki unga teng.040 | 0 dan kichik yoki unga teng.040 |
| STKR490 | 0 dan kichik yoki unga teng.18 | 0 dan kichik yoki unga teng.55 | 1,50 dan kam yoki unga teng | 0 dan kichik yoki unga teng.040 | 0 dan kichik yoki unga teng.040 |
* Birlik (foiz)
1. Zarur bo'lganda, yuqorida ko'rsatilganlardan tashqari qotishma elementlari qo'shilishi mumkin.
Issiq teglar: stkr400 ichi bo'sh qism, Xitoy, etkazib beruvchilar, ishlab chiqaruvchilar, zavod, narx
