Lub ntsiab ntxiv hlau ntsiab ntawm Q500NH steel phaj yog npib tsib xee thiab tooj liab. GB / T 4171 Q500NH yog qib steel resistant rau atmospheric corrosion. Thaum lub thickness yog sib npaug rau 16 hli, qhov tsawg kawg nkaus yield zog ntawm Q500NH yog ntau tshaj 500Mpa, thiab qhov tsawg kawg nkaus tensile zog yog ntau tshaj 600Mpa.
Tuam Tshoj GB / T 4171 Q500NH Huab cua Resistant Steel Phaj Chemical Composition thiab Mechanical Property:
| Qib | C | Si | Mn | P | S | Cu | Cr | Ni |
| Q500 NH | 0.12 | 0.65 | 2 | 0.025 | 0.03 | 0.20-0.55 | 0.30-1.25 | 0.12-0.65 |
| Qib | Yield zog (MPa) | Tensile zog (MPa) | % Elongation hauv 2 nti (50mm) min |
| Q500 NH | 500 | 600-760 | 18 |
GB / T 4171 Q500NH weathering steel phaj muaj corrosion kuj zoo thiab tuaj yeem siv los ua cov ntaub ntawv ntawm cov nkoj, ntim, thiab cov tsheb ciav hlau. Piv nrog rau cov hlau tsis muaj steel, nws tsuas yog muaj cov lej ntawm cov hlau alloying. Tag nrho cov ntsiab lus ntawm alloying xws li phosphorus, tooj liab, chromium, npib tsib xee, molybdenum, niobium, vanadium, titanium, thiab lwm yam nyob rau hauv weathering steel tsuas yog rau ob peb feem pua.
