Khoom Description
JIS G3125 SPA-H Low Alloy Weathering Resistant Steel Sheet yog tsim los rau cov ntawv thov uas muaj kev tiv thaiv corrosion yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas raug dej noo thiab huab cua sib txawv.
Nws cov yam ntxwv tseem ceeb tshaj plaws suav nrog lub zog tensile siab, zoo weldability, thiab muaj peev xwm tiv taus huab cua hnyav yam tsis muaj kev puas tsuaj loj.
Lub hauv paus ntsiab lus ntawm SPA H Steel ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov qauv xws li txuas hniav, vaj tse, thiab lwm yam kev teeb tsa sab nraum zoov.
Tshuaj muaj pes tsawg leeg
| Element (Symbol thiab lub npe) | Qhov feem pua (%) |
|---|---|
| C (Carbon) | 0.12 - 0.20 |
| Manganese (Mn) | 0.50 - 1.50 |
| P (phosphorus) | Tsawg dua lossis sib npaug li 0.04 |
| S (Sulfur) | Tsawg dua lossis sib npaug li 0.03 |
| Cu (kwv yees) | 0.25 - 0.55 |
| Cr (Chromium) | 0.20 - 0.50 |
| Ni (Nickel) | 0.30 - 0.50 |
Mechanical Properties
| Khoom | Xwm txheej/Tswv yim | Kev ntsuas kub | Tus nqi / Ntau Yam (Metric) | Tus nqi / Ntau Yam (Imperial) | Reference Standard for Test Method |
|---|---|---|---|---|---|
| Tensile zog | Raws li Rolled | Chav Temp | 490 - 620 MPa | 71 - 90 tsi | ASTM E8 |
| Yield zog (0.2% offset) | Raws li Rolled | Chav Temp | 355 - 450 MPa | 51 - 65 tsi | ASTM E8 |
| Elongation | Raws li Rolled | Chav Temp | 20 - 25% | 20 - 25% | ASTM E8 |
| Hardness (Brinell) | Raws li Rolled | Chav Temp | 150 - 200 HB | 150 - 200 HB | ASTM E10 |
| Impact Strength (Charpy) | -40 degree | -40 degree | 27 J | 20 ft -lbf | ASTM E23 |
Thaum tshav kub kub Resistance
| Khoom / txwv | Kub (degree) | Kub (degree F) | Lus hais |
|---|---|---|---|
| Max Continuous Service Temp | 400 degree | 752℃F | Haum rau kev siv cov txheej txheem |
| Max Intermittent Service Temp | 450 degree | 842℃F | luv- lub sij hawm raug nkaus xwb |
| Scaling Kub | 500 degree | 932f ua | Risk ntawm oxidation thaum kub kub |
Daim ntawv thov
Choj Structures
SPA-H weathering steel daim hlauyog dav siv nyob rau hauv kev tsim kho ntawm cov choj thiab lwm yam structural Cheebtsam. Nrog lub zog tawm los ntawmNtau dua lossis sib npaug li 355 MPathiab tensile zog xws li los ntawm490-630 MPa, lawv tuaj yeem tiv taus cov khoom hnyav thiab hnyav huab cua. Piv rau cov pa roj carbon zoo tib yam, SPA-H tuaj yeem txocov nqi kho mob los ntawm 30% -50%nyob rau hauv ntev- daim ntawv thov sab nraum zoov, ua rau nws zoo tagnrho rau hiav txwv- hla choj thiab kev loj choj.
Ntim thiab Cia Tank
Ua tsaug rau lawv cov huab cua zoo heev thiab kev tiv thaiv corrosion, SPA-H daim hlau tau siv dav hauv cov thawv ntim khoom, lub tank cia, thiab lwm yam khoom siv cia. Lawv atmospheric corrosion kuj yog hais txog2-8 npaug siab duatshaj li ntawm cov pa roj carbon zoo tib yam, ncua kev pab cuam lub neej los ntawm15-20 xyoo. Qhov no ua rau lawv tshwj xeeb tshaj yog haum rau cov roj tank, cov thawv ntim tshuaj, thiab cov thawv xa khoom.
Tsheb Cheebtsam
SPA-H weathering steel daim hlau yog siv los tsim cov khoom siv rau tsheb, tsheb ciav hlau, thiab nkoj. Piv txwv li, thaum siv rau tsheb ciav hlau, SPA-H tuaj yeem txo lub cev hnyav los ntawm10%–15%, txhim kho durability thiab txo cov roj noj. Nws txoj kev qaug zog zoo heev kuj ua rau lub sijhawm ntev - kev nyab xeeb kev ua haujlwm.
Tsev Kho kom zoo nkauj sab nrauv
Vim nws cov xeb tshwj xeeb -zoo li lub ntsej muag thiab tus kheej- tiv thaiv huab cua, SPA-H yog nrov nyob rau sab nrauv phab ntsa, facades, thiab toj roob hauv pes kho kom zoo nkauj. Tom qab ob peb lub hlis ntawm atmospheric raug, nto tsim ib tug ruaj khov xeb txheej ntawm txog0.5-1.5 hli thickness, zoo tiv thaiv corrosion ntxiv. Ntau qhov chaw niaj hnub no, xws li chaw ua haujlwm pej thuam thiab cov chaw coj noj coj ua, siv SPA-H daim hlau rau ob qho tib si zoo nkauj thiab ua haujlwm zoo.
Kev tsim kho tshuab
Hauv kev tsim kho tshuab, SPA-H weathering steel daim hlau yog tsim rau kev tsim khoom ntawm excavators, loaders, thiab cranes. Nrog rau siab yield zog thiab zoo heev cuam tshuam toughness, lawv tswj kev ua tau zoo txawm nyob rau hauv ib puag ncig tsawg li-20 degree. Piv nrog cov pa steels, cov tshuab ua nrog SPA-H daim hlau tuaj yeem ua tiav kev pab cuam lub neej nce ntawmtshaj 25%
