A588 Gr.K weathering steel phaj tau dhau los ua neeg nyiam ntawm cov neeg siv kawg ntawm cov khoom yob tsim. Nws cov tsos tshwj xeeb thiab ib txwm oxidized nto ua rau nws tshwj xeeb tshaj yog haum rau ntau yam kev tsim kho. Piv nrog rau lwm cov hlau, cov hlau no muaj zog dua rau atmospheric corrosion. Los ntawm kev tsim cov xim av xim av oxide txheej rau ntawm cov hlau saum npoo, nws tiv taus cov corrosive los nag, daus, dej khov, pos huab thiab lwm yam huab cua, inhibits kev nkag mus tob, thiab txuag cov nqi ntawm kev pleev xim los yog kev tiv thaiv xeb.
ASTM A588Grade K Huab cua Resistant Steel Phaj Chemical Composition thiab Mechanical Property:
| Qib | C max | Si | Mn | P max | S max |
Nim max |
Cr |
Mas max |
Cu |
Cb |
|
A588 Qib K |
0.17 |
0.25-0.50 |
0.50-120 |
0.04 |
0.05 |
0.40 |
0.40-0.70 |
0.10 |
0.30-0.50 |
0.005-0.05 |
| Qib | Yield zog (MPa) min. | Tensile zog (MPa) min. | Elongation hauv 8 hauv min. % | Elongation hauv 2 hauv min. % |
|
A588 Qib K |
345 | 485 | 18 | 21 |
