1. Ncaj nraim li ASTM sib npaug
ASTM A588 Qib A / B / K
Feem ntau phim:
A588 Qib Kyog ze li ntawm kev sib xyaw thiab kev ua tau zoo.
Qhov zoo sib xws:
Corrosion Kuj: Ob daim ntawv ib qho kev tiv thaiv xeb patina.
Cov Khoom Siv Neeg Kho Tshuab: Zoo li paib zog (~ 345 mpa min).
Alloying Ntsiab: Piv CU, CR, NI, thiab P Cov Ntsiab Lus.
| Ntiag tug | Q355NH (GB / T 4171) | ASTM A588 Qib K |
|---|---|---|
| Paib lub zog | Ntau dua los yog sib npaug rau 355 mpa | Ntau dua los yog sib npaug rau 345 mpa (50 ksi) |
| Lub zog tensile | 470-630 MPa | 485-655 mpa |
| Corrosion Kuj | Zoo heev (P, Cu, CR) | Zoo heev (P, Cu, CR) |
| Cov ntawv thov MAIN | Txuas hniav, ntim khoom, facades | Cov txheej txheem, sab nraum zoov kos duab |
2. Lwm cov astm huab cua huab cua qib (kaw kev sib txawv)
| Qib | Piv nrog Q355NH |
|---|---|
| ASTM A242 (Hom 1) | Ntau dua p (0.07-0.15%), tsawg dua weldable |
| ASTM A606 (Hom 4) | Ntau dua hauv cov ntawv / coil daim ntawv, zoo sib xws corrosion tsis kam |
| ASTM A847 | Lub zog siab dua (rau tubing), cov huab cua zoo sib xws |
3.. Qhov sib txawv tseem ceeb ntawm Q355NH & ASTM cov qib
| Yam tseem ceeb | Q355NH | ASTM A588 |
|---|---|---|
| Lub hom phiaj | Suav (GB / T 4171) | ASTM (USA) |
| P cov ntsiab lus | 0.07–0.12% | 0.04–0.12% (A588) |
| CU Cov Ntsiab Lus | 0.25–0.55% | 0.20–0.50% (A588K) |
| Cuam Tshuam | Yuav tsum muaj nyob rau hauv -20 degree | Feem ntau xeem ntawm -40 degree |
4. Nyob sab Europe sib npaug (En cov qauv)
EN 10025-5: S35555555555555555555555555555555555JTP / S355J2WP
"WP"{{0= huab cua huab cua (zoo ib yam li corten).
J0/J2= Qhov xwm txheej Bougnness Toubes.
5. Qhov twg Astm qib koj yuav tsum siv?
Rau tej yam kev ua yeeb yam hauv Asmeskas / Canada: ASTM A588 Qib K(Zoo phim).
Rau Cov Ntawv Hlau Hlau: ASTM A606 Hom 4.
Yog tias phosphorus siab dua yog siv tau: ASTM A242.
