Product Overview
SPA-H corrosion{1}}resistant steel phaj, tseem hu ua weathering steel, yog siab -lub zog qis- alloy steel feem ntau alloyed nrog tooj liab (0.25–0.55%), chromium (0.30–0.70%), thiab nickel (0.30–0.50%). Cov ntsiab lus alloying no muaj qhov tshwj xeeb atmospheric corrosion kuj.
Tsis pub dhau 6-12 lub hlis ntawm kev tawm sab nraum zoov, SPA-H steel ib txwm tsim cov oxide patina ruaj khov, uas ua rau qeeb qeeb ntawm corrosion.
Kev pab lub neej tshaj 30 xyoo nyob rau hauv ib txwm atmospheric tej yam kev mob.
Mechanical zog: Yield zog Ntau dua los yog sib npaug rau 345 MPa, tensile zog 450-550 MPa, elongation 18-21%. Zoo tagnrho rau cov choj, tsev facades, thiab cov qauv sab nraum zoov.
Cov Khoom Zoo
1. Corrosion Resistance
Ua ib txheej tuab, ruaj khov oxide (patina) hauv 6-12 lub hlis.
Txo cov nqi kho thiab txheej txheej.
Kev pab lub neej tshaj 30 xyoo nyob rau hauv ib txwm atmospheric tej yam kev mob.
2. Siab zog
Yield zog Ntau tshaj los yog sib npaug rau 345 MPa, tensile zog 450-550 MPa, elongation 18-21%.
Tso cai rau cov txheej txheem nyias nyias, txo qhov hnyav thiab txhim kho kev siv cov khoom siv.
3. Kev thov kom zoo nkauj
Tsim ib qho xim liab liab - xim av huab cua.
Dav siv nyob rau hauv architectural facades, txuas hniav, thiab toj roob hauv pes tsim.
Cov khoom txwv
Tus nqi pib siab dua: Alloying cov ntsiab lus nce tus nqi yuav khoom los ntawm 20-40%, tab sis tus nqi ntawm lub neej tseem muaj txiaj ntsig.
Limited Ductility: Tej zaum yuav tsis haum rau cov ntawv thov uas yuav tsum tau khoov los yog sib sau ua ke.
Vuam xav txog: Yuav tsum tau muab cov hlau tsim nyog thiab tswj cov cua sov kom tiv thaiv kev tawg hauv cheeb tsam.
| Standard Organization | Qib / Qib | Lub teb chaws / Cheeb Tsam | Sau ntawv |
|---|---|---|---|
| UNS | K12043 | Teb chaws USA | Ze tshaj sib npaug rau ASTM A588 |
| ASTM | A588 | Teb chaws USA | Weathering steel qauv |
| EN | S355J0W | Teb chaws Europe | Cov kev sib txawv me me |
| JIS | G3125 | Nyiv | Cov khoom zoo sib xws, siv hauv cov ntawv thov Japanese |
| GB | qw 345g | Tuam Tshoj | Comparable weathering steel qib |
Chemical Composition (%)
| Element | Ntau yam (%) | Lub luag haujlwm |
|---|---|---|
| C (Carbon) | 0.12–0.20 | Lub hauv paus muaj zog |
| Manganese (Mn) | 0.50–1.50 | Lub zog thiab hardness |
| P (phosphorus) | Tsawg dua los yog sib npaug li 0.04 | Tswj impurity |
| S (Sulfur) | Tsawg dua lossis sib npaug li 0.03 | Tswj impurity |
| Cu (kwv yees) | 0.25–0.55 | Txhim kho corrosion kuj los ntawm kev txhawb nqa patina tsim |
| Cr (Chromium) | 0.20–0.50 | Nce hardness, oxidation kuj |
| Ni (Nickel) | 0.30–0.50 | Txhim kho toughness thiab qis -kub ductility |
Mechanical Properties
| Khoom | Qhov xwm txheej | Test Temp | Metric nqi | Imperial nqi | Test Standard |
|---|---|---|---|---|---|
| Tensile zog | Raws li Rolled | Chav Temp | 490-620 MPa | 71-90 dr hab | ASTM E8 |
| Yield zog (0.2% offset) | Raws li Rolled | Chav Temp | 355-450 MPa | 51-65 hli | 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 |
Lub cev muaj zog
| Khoom | Kev mob/Temp | Metric | Imperial |
|---|---|---|---|
| Qhov ntom | - | 7.85 g / cm³ | 0.284 lb/in³ |
| Melting Point | - | 1425-1540 degree | 2600-2800 ° F |
| Thermal conductivity | 20 degree | 50 W/m·K | 34.5 BTU·in/h·ft²·° F |
| Tshwj xeeb kub muaj peev xwm | 20 degree | 0.49 kJ/kg · K | 0.12 BTU/lb ·℃F |
| Hluav taws xob Resistivity | 20 degree | 1.7×10⁻⁶ Ω·m | 1.7 × 10⁻⁶ Ω·in |
Corrosion Resistance
| Corrosive Agent | Nco ntsoov | Temp | Kev tiv thaiv | Sau ntawv |
|---|---|---|---|---|
| Chlorides | 3–5% | 25 degree | Ncaj ncees | Risk ntawm pitting |
| Sulfur Dioxide | 0.1–0.5% | 30 degree | Zoo | Tsim sulfuric acid |
| Cov pa roj carbon dioxide | 0.5–1% | 25 degree | Zoo heev | Ua cov carbonic acid |
| Acetic acid | 5–10% | 20 degree | pluag | Txaus siab rau SCC |
SPA-H ua tau zoo nyob rau hauv thaj chaw nyob deb nroog thiab hauv nroog atmospheric ib puag ncig, tab sis tsis tshua muaj chloride- thaj chaw nplua nuj nyob hauv ntug dej hiav txwv.
Thaum tshav kub kub Resistance
| Khoom | Kub (degree) | Kub (degree F) | Sau ntawv |
|---|---|---|---|
| Max Continuous Service Temp | 400 | 752 | Haum rau kev siv cov txheej txheem |
| Max Intermittent Service Temp | 450 | 842 | luv- lub sij hawm raug nkaus xwb |
| Scaling Kub | 500 | 932 | Risk ntawm oxidation thaum kub kub |
SPA-H khaws cov khoom siv kho tshuab ntawm qhov kub thiab txias, tab sis qhov ntev ntev ntawm qhov kub siab tshaj 400℃tuaj yeem ua rau scaling thiab txo kev ua haujlwm.
Cov khoom siv
| Kev lag luam / Sector | Piv txwv | Cov khoom tseem ceeb | Yog vim li cas xaiv |
|---|---|---|---|
| Kev tsim kho | Cov choj | Siab zog, corrosion kuj | Ntev lifespan, txo kev txij nkawm |
| Kev tsim vaj tsev | Sculptures, facades | Aesthetic thov, huab cua tsis kam | Distinctive tsos, durability |
| Kev thauj mus los | Railcars | Siab zog, toughness | Kev nyab xeeb thiab kev ntseeg siab |
| Zog | Cua turbine yees | Corrosion kuj, structural kev ruaj ntseg | Ntev ntev nyob rau hauv ib puag ncig hnyav |
Lwm daim ntawv thov suav nrog cov duab puab sab nraum zoov, lub tank cia, silos, khaws cov phab ntsa, thiab kev tsim kho kom zoo nkauj. SPA-H steel raug xaiv rau nws lub peev xwm los tiv thaiv ib puag ncig cov teeb meem thaum tuav cov qauv kev ncaj ncees thiab kev zoo nkauj.
Spa H khoom yog dab tsi?
Raws li Spa-h steel coil cov khoom yog cov huab cua huab cua, nws tsim cov patina tiv thaiv ntawm qhov chaw uas ua rau nws zoo li rustic. Cov tshuaj muaj pes tsawg leeg ntawm JIS g3125 spa-h strip muaj xws li carbon, silicon, manganese, phosphorus, sulfur, tooj liab, chromium thiab nickel.
Spa-h steel sib npaug yog dab tsi?
Kev sib npaug thoob ntiaj teb ntawm qib SPA-H (Nyiv: JIS ) Hla cov lus siv rau Steel SPA-H (JIS ) thiab nws qhov sib npaug European S355J0WP (1.8945)
Cov tshuaj muaj pes tsawg leeg ntawm SPA-H Steel yog dab tsi?
Cov ntsiab lus tseem ceeb suav nrog carbon (C), manganese (Mn), silicon (Si), chromium (Cr), thiab tooj liab (Cu). Lawv cov ntsiab lus yog tswj nruj me ntsis kom ntseeg tau tias cov khoom siv kho tshuab thiab huab cua tsis kam.
Yuav ua li cas tswj SPA-H Steel?
SPA-H steel yuav tsum tau saib xyuas tsawg kawg nkaus. Ib txheej xeb ruaj khov tiv thaiv cov hlau. Kev tu tsis tu ncua kom tshem tawm cov plua plav lossis cov khib nyiab thiab zam kom tsis txhob raug dej ntev yog txaus.
SPA-H hlau tuaj yeem welded?
Yog lawm. Tsawg-hydrogen arc vuam lossis roj tiv thaiv vuam raug pom zoo. Preheating thiab qeeb txias tom qab vuam pab tiv thaiv kev tawg.
