Gnee, raws li ib tug ntseeg steel xa khoom, muaj A588 qib A (gr a) huab cua {1} {{1 {1} {{cov kev sib tw, cov lus qhia ntxaws ntxiv, thiab cov ncauj lus qhia ntxaws ntxaws.
A588 Qeb Ib Daim Ntawv HlauCov khoom ua kom pom zoo tsis kam mus rau cov neeg siv hluav taws xob hauv lub cev, deb tshaj qhov txawv txav cov roj carbon hlau. Qhov kev ua tau zoo no yog vim kev tsim cov txheej txheem tiv thaiv oxide rau saum npoo, uas qeeb qeeb ntxiv corrosion.
Ob qho tib si 588 qib ib thiab lwm cov neeg siv hluav taws xob yog qhov siab {{{{{{(345 MPa), cia cov qauv tsim qauv thiab cov nqi txuag tau nyiaj.
Feem ntau npaj rau cov ntawv thov uas tsis tau pom zoo, cov hlau no txo cov kev saib xyuas xws li rov ua dua. Txij li nws cov lus qhia, ASTM A588 qib A tau siv dav dav hauv cov choj, cranes tsheb, txoj kev loj, tshuaj lom neeg, thiab cov khoom siv hluav taws xob.
Piv nrog cov pa roj carbon cov hlau xws li A36 thiab A572}}}}}}}}} ecupicer corrospheror tsis kam, nrog lossis tsis muaj tooj liab ntxiv. Nws qhov tsawg kawg nkaus tensile lub zog yog 70 ksi (483 mpa), haum rau cov txheej txheem txheej txheem hnyav txheej txheem.
Cov Khoom Siv Neeg Kho Tshuab
| Ntiag tug | Me me | Muaj huab tais |
|---|---|---|
| Yam tsawg kawg nkaus xwb Zog | 345 MPa | 50 ksi |
| Yam tsawg kawg tensile lub zog | 483 MPa | 70 ksi |
| Elongation thaum so (200 hli) | 20% | 20% |
| Elongation thaum so (50 hli) | 23% | 23% |
| Modulus ntawm elasticity | 200 gpa | 29,000 Ksi |
Tshuaj lom neeg muaj pes tsawg leeg (qib A)
| Lub ntsiab | C | Mn | P | S | Si | Cr | Ni | CU | V |
|---|---|---|---|---|---|---|---|---|---|
| Zoo siab | 0.19% | 0.80–1.25% | 0.03% | 0.03% | 0.03–0.65% | 0.40–0.65% | 0.40% | 0.25–0.40% | 0.02–0.10% |
Cov Ntawv Thov
| Tshav pob | Piv Txwv Siv |
|---|---|
| Yam xwm txheej | Txuas hniav, Cranes, kev hloov cov yees, txoj kev loj |
| Yam muaj hauj lwm | Tshuaj Nroj Tsuag, Khoom Siv, Tso Tsheb Hlau Luam, Ntim |
| Kev mus | Tsheb nqaj tsheb, cov cuab yeej hnyav, nkoj |
Raws li qhov txhim khu kev qha A588 qib ib tus neeg xa khoom steel hauv Suav teb, GNEE muab cov khoom muaj, qhov ntau thiab tsawg thiab kev txhawb nqa. Txog kev nug txog ASTM A588 qib ib tus hlau, thov hu rau peb rau cov nqe lus kawg, muaj cov ncauj lus kom ntxaws.
