S355G2+N steel phaj belongs rau European tus qauv qis- alloy siab- lub zog steel, uas yog welded structural steel rau ruaj offshore lug, thiab belongs rau welded structural steel rau ruaj offshore lug.
"S" txhais tau tias cov qauv hlau, "355" txhais tau tias qhov tsawg kawg nkaus lub zog ntawm cov hlau phaj, thiab G2 yog cov yam ntxwv ntawm cov qib steel, N yog normalized lossis normalized dov xa khoom.
Roj thiab offshore platform S355G2+N,S355G2+N steel phaj, S355G2+N steel ntawv specification, cov hlau qib S355G2+N nrog normalized tshav kub kho.S355G2+N roj platform steel phaj ua rau cov specification no yog siv rau welded kev tsim kho ntawm Cov qauv hauv ntug dej hiav txwv hauv cov ntu tseem ceeb uas tau xaiv uas yuav tsum muaj cov khoom muaj txiaj ntsig zoo thiab tiv thaiv kev qaug zog thiab dhau los ntawm - thickness los yog lamellar tearing. Qhov tseem ceeb ntawm kev siv cov hlau no yog nyob rau hauv tubular pob qij txha, txhav phaj tsim, thiab lwm yam kev sib tshuam qhov chaw ntawm daim hlau yuav raug nro los ntawm - tuab (Z) kev taw qhia.
S355G2+N steel phaj tus qauv: EN 10225-2009.
S355G2+N steel phaj kub kho tus me nyuam raws li txoj cai: normalized dov, normalized.
Smelting tsom xam cov tshuaj muaj pes tsawg leeg ntawm S355G2+N steel phaj:
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Nb | V | Ti | Alt | N | CeqMax |
| ≤0.2 | ≤0.5 | 0.9-1.65 | ≤ 0.035 | ≤ 0.03 | ≤0.5 | ≤0.3 | ≤0.1 | ≤ 0.35 | ≤ 0.06 | ≤ 0.12 | ≤ 0.03 | ≥0.02 | ≤ 0.015 | ≤ 0.43 |
Cov Lus Qhia Cov Khoom Siv: Alt / N≥2. Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
Mechanical zog ntawm S355G2+N steel phaj:
| Qib | Mechanical zog | |
| S355G2+N phaj (≤16mm) | ReH (MPa) | ≥355 |
| Rm (MPa) | 470-630 | |
| A(%) | ≥ 22 | |
| Impact kub | -20 | |
| Akv(J) | ≥50 | |
| S355G2+N plate (>16-25mm) | ReH (MPa) | ≥345 |
| Rm (MPa) | 470-630 | |
| A(%) | ≥ 22 | |
| Impact kub | -20 | |
| Akv(J) | ≥50 | |
