ASTM A633 HSLA po'latdir
Ushbu material, ayniqsa, -50oF [-45oC] va undan yuqori past muhit haroratida xizmat ko'rsatish uchun juda mos keladi, bu erda o'xshash mustahkamlik darajasidagi prokat materialida kutilganidan ko'ra yaxshiroq cho'zilgan qattiqlik talab qilinadi.
A, C, D va E darajalari bilan belgilangan to'rtta sinf (asosan avvalgi A633 spetsifikatsiyasi sinf belgisisiz) ushbu spetsifikatsiya bilan qamrab olingan.
A darajasi 4 dyuymdan 100 mm gacha bo'lgan qalinligida 42 ksi [290 MPa] ni tashkil qiladi.
C va D navlari qalinligi 2,50 dyuym [65 mm] gacha, shu jumladan, 50 ksi [345 MPa] va qalinligi 2,50 dyuymdan 4,0 dyuymgacha [65 dan 100 mm] gacha bo'lganlar uchun 46,0 ksi [315 MPa] minimal chiqish nuqtasini ta'minlaydi.
E darajasi 4,0 dyuym [100 mm] gacha bo'lgan qalinligida 60 ksi [415 MPa], inklyuziv va qalinligi 4 dyuymdan 6 dyuymgacha [100 dan 150 mm] gacha bo'lgan qalinligida 55 ksi [380 MPa] minimal chiqish nuqtasini ta'minlaydi.
ASTM A633 A sinfining rentabellik kuchi qanday?
290 MPa
A633 A sinfining minimal oqish kuchi 42 ksi [290 MPa]
Kimyoviy talablar
*Elementlar foizda ifodalanadi
Ushbu jadvalda "-" ko'rsatilgan joyda hech qanday talab yo'q
| Element | A darajasi, % | C darajasi, % | D darajasi, % | E darajasi, %A |
|---|---|---|---|---|
| Uglerod, maks | 0.18 | 0.20 | 0.20 | 0.22 |
| Marganets: | ||||
| 1½ dyuym [40 mm] va qalinligi | 1.00-1.35 | 1.15-1.50B | 0.70-1.35 | 1.15-1.50 |
| 1½ dyuymdan 4 dyuymgacha [40 dan 100 mm] gacha, shu jumladan | 1.00-1.35 | 1.15-1.50B | 1.00-1.60 | 1.15-1.50 |
| 4 dyuymdan 6 dyuymgacha [100 dan 150 mm] gacha, shu jumladan | C | C | C | 1.15-1.50 |
| Fosfor, maks | 0.030 | 0.030 | 0.030 | 0.030 |
| Oltingugurt, maks | 0.030 | 0.030 | 0.030 | 0.030 |
| Silikon | 0.15-0.50 | 0.15-0.50 | 0.15-0.50 | 0.15-0.50 |
| Vanadiy | – | – | – | 0.04-0.11 |
| Kolumbiya | 0,05 maksimal | 0.01-0.05 | – | D |
| Azot, maks | – | – | – | 0.03 |
| Mis, maks | – | – | 0.35 | – |
| Nikel, maks | – | – | 0.25 | – |
| Chromium, maks | – | – | 0.25 | – |
| Molibden, maks | – | – | 0.08 | – |
Kuchlanish talablari
| A sinf | C va D sinflari | E sinf | |
|---|---|---|---|
| Chiqish nuqtasi, min, ksi [MPa]: | |||
| 2,5 dyuym [65 mm] va undan past | 42 [290] | 50 [345] | 60 [415] |
| 2,5 dyuymdan 4 dyuymgacha [65 dan 100 mm] gacha, shu jumladan | 42 [290] | 46 [315] | 60 [415] |
| 4 dyuymdan 6 dyuymgacha [100 dan 150 mm] gacha, shu jumladan | B | B | 55 [380] |
| Kuchlanish kuchi, ksi [MPa]: | |||
| 2,5 dyuym [65 mm] va undan past | 63 dan 83 gacha [430 dan 570 gacha] | 70 dan 90 gacha [485 dan 620 gacha] | 80 dan 100 gacha [550 dan 690 gacha] |
| 2,5 dyuymdan 4 dyuymgacha [65 dan 100 mm] gacha, shu jumladan | 63 dan 83 gacha [430 dan 570 gacha] | 65 dan 85 gacha [450 dan 590 gacha] | 80 dan 100 gacha [550 dan 690 gacha] |
| 4 dyuymdan 6 dyuymgacha [100 dan 150 mm] gacha, shu jumladan | B | B | 75 dan 95 gacha [515 dan 655 gacha] |
| Uzayish 8 dyuym [200 mm], min, %C | 18 | 18 | 18 |
| Uzayishi 2 dyuym [50 mm], min, %C | 23 | 23 | 23 |
