SA203GrD steel phaj belongs rau ultra-tsawg kub thawv phaj, SA203 yog ib yam uas tsis muaj nickel alloy hlau, nrog rau tsib qib ntawm A, B, D, E thiab F. Qib ntawm SA203GrD yog ib yam uas tsis muaj nickel alloy hlau. Ntawm lawv, D, E, F nominal nickel ntsiab lus ntawm 3.5%, feem ntau hu ua 3.5Ni steel. SA203D/E/F muaj kev cuam tshuam zoo toughness thiab mechanical zog nyob rau hauv qis-kub chaw ua hauj lwm, feem ntau yog siv nyob rau hauv -70 ~ -101 degree low-temperature ib puag ncig (tempered lub xeev yuav mus txog rau -107 degree).
SA203GrD steel phaj qib qhia:
"SA": qhia tias steel phaj yog American Standard thawv phaj;
"203": qhia tias qhov tsawg kawg nkaus lub zog ntawm steel phaj yog 203MPa;
"Gr": lub ntsiab lus ntawm "Green";
"D": qhia txog qib zoo ntawm steel phaj, rau -20 degree cuam tshuam kev xeem.
Cov cuab yeej cuab tam rau SA203 Qib D steel phaj:
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | Tensile zog (Mpa) | Elongation nyob rau hauv ntau dua los yog sib npaug rau ,% | |
| 255 | 450-585 | 200 hli | 50 hli |
| 19 | 23 | ||
Tshuaj muaj pes tsawg leeg rau SA203 Qib D steel phaj (Kub ntsuas Max%):
| Cov ntsiab lus tseem ceeb ntawm SA203 Qib D | ||||||
| Thickness (hli) | C | Si | Mn | P | S | Ni |
| T Tsawg dua lossis sib npaug li 50 | 0.17 | 0.15-0.40 | 0.70 | 0.035 | 0.035 | 3.25-3.75 |
| 50<> | 0.20 | 0.80 | ||||
