ASTM A709 HPS 50W Cov Qauv Hlau Phaj rau Choj Kev Tsim Kho
Koj puas yog khoomASTM A709 HPS 50W structural steel phaj rau txuas hniav? HPS 50W yog qhov ua tau zoo tshaj plaws huab cua cov qauv steel qib teev tseg rau kev siv choj.
Nws ua ke qhov tsawg kawg nkaus lub zog ntawm 50 ksi (345 MPa) nrog txhim kho atmospheric corrosion kuj thiab tswj cov tshuaj muaj pes tsawg leeg.
Cov yam ntxwv no ua rau nws xaiv cov khoom siv rau cov choj girders, cov phiaj xwm phaj, thiab lwm yam khoom siv choj thaum tau teev tseg los ntawm qhov project engineer.
ASTM A709 / A709M npog cov qauv hlau cov duab, daim hlau, thiab cov tuav rau kev tsim kho choj, suav nrog cov qib high-strength low-alloy thiab weathering steel qib.
Nyob rau hauv tam sim no ASTM A709 / A709M-26 cov npe, HPS 50W raug xaiv HPS 345W, nrog rau qhov ntsuas qhov tsawg kawg nkaus lub zog ntawm 345 MPa.
Nws qhov "kev ua tau zoo" yuav tsum tsis txhob raug txhais raws li qib siab tshaj tawm-lub zog tshaj li Qib 50W; Qhov kev sib txawv kuj tseem suav nrog cov khoom siv chemistry thiab cov kev xav tau kev ua tau zoo siv rau choj hlau.
ASTM A709 HPS 50W Steel Phaj Specifications
ASTM A709 HPS 50W yog npaj rau kev siv cov qauv uas muaj zog, atmospheric corrosion resistance, thiab project-specific choj yuav tsum tau txiav txim siab ua ke.
| Yam khoom | Specification |
|---|---|
| Khoom | High-performance weathering structural steel phaj |
| Qib | ASTM A709 HPS 50W / HPS 345W |
| Txuj | ASTM A709 / A709M; paub meej tias tsab ntawv xav tau los ntawm qhov project |
| Yam tsawg kawg yield zog | 50 ksi (345 MPa) |
| Tsawg kawg tensile zog | 70 ksi (485 MPa) |
| Tsawg kawg elongation hauv 2 hauv (50 mm) | 21%, raws li qhov yuav tsum tau ua |
| Yam tsawg kawg elongation hauv 8 hauv (200 mm) | 18%, raws li qhov yuav tsum tau muaj |
| Tshaj tawm thickness ntau | 13-50.8 hli |
| Tshaj tawm dav dav | 1,800–3,050 mm |
| Tshaj tawm ntev ntau yam | 6,100–30,480 mm |
| Tej kev siv | Choj girders, choj daim hlau, cov khoom siv |
Qhov ntau thiab tsawg pab cov neeg yuav khoom npaj cov lus qhia ua ntej, tab sis txhua qhov kev txiav txim yuav tsum tau kuaj xyuas qhov tseeb ntawm phaj loj, qhov hnyav, muaj ntau lawm, thiab lub sijhawm xa khoom.
Piv txwv li, kev thov rau 25 mm × 2,000 mm × 12,000 mm HPS 50W daim hlau yuav tsum suav nrog tag nrho cov tonnage, yuav tsum muaj kev kam rau siab, siv tus qauv tsim, thiab cov kev soj ntsuam xyuas kom tus neeg xa khoom tuaj yeem lees paub qhov ua tau thiab npaj cov lus hais kom raug.
ASTM A709 HPS 50W Cov Khoom Siv Tshuaj
Cov tshuaj muaj pes tsawg leeg ntawm HPS 50W yog ib feem tseem ceeb ntawm nws cov qauv tsim ua haujlwm siab.
HPS 50W Chemical Composition Table (Kev Ntsuas Kub)
| Element | Kev xav tau (wt.%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.11 |
| Manganese (Mn | 1.10-1.35 rau thickness Tsawg dua los yog sib npaug li 65 hli; xyuas cov qauv siv tau |
| Phosphorus (P) | Tsawg dua los yog sib npaug rau 0.020 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.006 |
| Silicon (Si) | 0.30–0.50 |
| Copper (Cu) | 0.25–0.40 |
| Nickel (Ni) | 0.25–0.40 |
| Chromium (Cr) | 0.45–0.70 |
| Molybdenum (hli) | 0.02–0.08 |
| Vanadium (V) | 0.04–0.08 |
| Aluminium (Al) | 0.010–0.040 |
| Nitrogen (N) | Tsawg dua lossis sib npaug li 0.015 |
Cov lus saum toj no ua raws li kev tshaj tawm HPS 50W khoom chemistry thiab cov lus qhia ASTM.
ASTM A709 HPS 50W Mechanical Properties
Raws li cov ntaub ntawv luam tawm HPS 50W, qhov tsawg kawg nkaus yield zog yog 50 ksi (345 MPa) thiab qhov tsawg kawg nkaus tensile lub zog yog 70 ksi (485 MPa) rau cov khoom teev thickness ntau yam.
Qhov tsawg kawg nkaus elongation yog pom raws li 21% tshaj li 2 hauv (50 mm) ntsuas qhov ntev thiab 18% tshaj qhov ntev ntawm 8 hauv (200 mm), raws li cov kev xeem thiab cov qauv. Cov duab no muab cov ntaub ntawv muaj txiaj ntsig zoo rau kev tshuaj xyuas thiab kev sib piv cov ntaub ntawv.
| Khoom | HPS 50W yuav tsum tau |
|---|---|
| Yield zog | 50 ksi (345 MPa) yam tsawg kawg nkaus |
| Tensile zog | 70 ksi (485 MPa) yam tsawg kawg nkaus |
| Elongation hauv 2 hauv (50mm) | 21% yam tsawg kawg nkaus |
| Elongation hauv 8 hauv (200mm) | 18% yam tsawg kawg nkaus |
| Tensile test reference | ASTM A370 thiab siv tau A709 / A709M cov kev cai |
Cov txiaj ntsig saum toj no yuav tsum tau muab txhais ua ke nrog cov phaj tuab, cov qauv kev taw qhia, thiab cov cai xeem siv tau.
Piv txwv li, cov chaw tsim tshuaj paus tau sau tseg tias rau daim hlau dav dua 24 hauv (kwv yees li 610 hli), elongation yuav tsum tau txo los ntawm ob feem pua ntawm cov ntsiab lus raws li ASTM A6 cov kev cai.
HPS 50W vs ASTM A709 Qib 50W
Ob leeg HPS 50W thiab tus qauv Qib 50W muaj qhov ntsuas qhov ua tau tsawg kawg nkaus ntawm 345 MPa raws li cov lus qhia A709, thiab ob qho tib si yog huab cua cov qauv steel qib rau kev siv choj.
HPS 50W tsis yog qhov yooj yim dua-yield-lub zog version ntawm Qib 50W. Nws cov chemistry tswj nruj dua nyob rau hauv ntau qhov chaw tseem ceeb, suav nrog cov pa roj carbon, phosphorus, thiab sulfur, thiab cov khoom yuav tsum raug soj ntsuam raws li HPS 50W cov cai tshwj xeeb uas tau teev tseg hauv daim ntawv xaj yuav khoom.
| Kev sib piv | A709 Qib 50W | A709 HPS 50 W |
|---|---|---|
| Yam tsawg kawg yield zog | 345 MPa | 345 MPa |
| Tsawg kawg tensile zog | Txheeb xyuas cov qauv txiav txim thiab cov khoom yuav tsum tau ua | 485 MPa nyob rau hauv cov ntaub ntawv hais txog cov khoom |
| Cov pa roj carbon ntau | Hom A: 0.19%; Hom B: 0.20% hauv cov lus hais A709/A709M-21 | 0.11% |
| Phosphorus siab tshaj plaws | 0.030% hauv cov lus hais A709/A709M-21 | 0.020% |
| Sulfur siab tshaj plaws | 0.030% hauv cov lus hais A709/A709M-21 | 0.006% |
| Npaj siv | Kev siv choj choj | Choj kev siv cov qauv siv HPS 50W |
Cov duab hauv qhov kev sib piv no yog los ntawm A709 / A709M-21 chemistry table thiab luam tawm HPS 50W cov ntaub ntawv khoom; daim ntawv txiav txim siv tau yuav tsum tau kuaj ua ntej siv.
Atmospheric Corrosion Resistance ntawm HPS 50W Weathering Steel
HPS 50W belongs rau cov qib atmospheric corrosion-resistant qib uas teev nyob rau hauv ASTM A709 / A709M. Nyob rau hauv qhov tsim nyog raug mob, huab cua hlau tuaj yeem txhim kho kev tiv thaiv patina los ntawm kev rov ntub dej thiab ziab.
Cov txheej txheej saum npoo no tuaj yeem pab ua kom qeeb ntxiv corrosion thiab tuaj yeem txo qhov kev xav tau rov qab pleev xim dua piv nrog cov qauv hlau, nyob ntawm tus qauv tsim thiab ib puag ncig.
Rau cov phiaj xwm choj, kev ua haujlwm corrosion nyob ntawm ntau dua li qib steel. Cov dej tsis tu ncua, cov dej tsis zoo, cov dej ntsev hauv hiav txwv, de-icing ntsev, thiab cov ntsiab lus uas ntxiab dej tuaj yeem cuam tshuam rau kev tsim thiab ruaj khov ntawm patina.
Cov kws kho tsheb yuav tsum ntsuas qhov chaw nyob hauv ib puag ncig, cov dej ntws, cov ntsiab lus ntawm cov qauv, thiab cov kev qhia tshwj xeeb ua ntej txiav txim siab seb HPS 50W tuaj yeem siv yam tsis muaj cov txheej txheem txheej txheem.
Daim ntawv thov ntawm ASTM A709 HPS 50W Steel Phaj
ASTM A709 HPS 50W yog npaj rau kev tsim kho choj thiab lwm yam kev siv cov txheej txheem uas qhov project tshwj xeeb hu rau qib no.
Cov ntawv thov muaj peev xwm muaj xws li choj girders, girder flanges thiab webs, choj lawj txhawb cov khoom, thiab lwm yam khoom siv choj, raug tsim los ntawm engineering thiab cov ntaub ntawv pom zoo.
Thaum tsim ib tug choj, engineers xav txog ncua ntev, tuag thiab nyob loads, qaug zog, kev twb kev txuas tsim, vuam txheej txheem, toughness yuav tsum tau, thiab ib puag ncig raug.
Qhov tsawg kawg nkaus tawm lub zog ntawm 345 MPa tsuas yog ib feem ntawm qhov kev ntsuas no. Lub phiaj xwm kuj tseem tuaj yeem hais txog qhov kev sim cuam tshuam, kev xav tau ntxiv, lossis lwm yam kev lees paub uas yuav tsum tau lees paub ua ntej cov hlau raug txiav txim.
Kev soj ntsuam zoo thiab cov ntaub ntawv pov thawj rau HPS 50W
Kev lees paub zoo rau ASTM A709 HPS 50W yuav tsum ua raws li cov qauv kev txiav txim thiab qhov project specification. ASTM A709 / A709M suav nrog kev tshuaj xyuas tshuaj lom neeg thiab kev sim tensile, thiab tus qauv suav nrog cov kev ntsuas cuam tshuam rau cov tswv cuab ntawm cov qauv.
Qhov kev soj ntsuam siv tau nyob ntawm cov khoom, lub luag haujlwm ntawm cov qauv, thiab cov kev xav tau ntxiv uas tau teev tseg hauv daim ntawv xaj khoom.
Rau qhov kev yuav khoom, cov neeg yuav khoom yuav tsum paub meej tias daim ntawv pov thawj kev xeem cov khoom txheeb xyuas HPS 50W, cov qauv siv tau, cov khoom siv hluav taws xob los yog cov khoom siv sib txawv, thiab cov txiaj ntsig ntawm cov tshuaj lom neeg thiab cov khoom siv.
Qhov twg yuav tsum tau los ntawm qhov project, Charpy V-notch impact testing, ultrasonic test, third-party inspection, los yog lwm yam kev ntsuam xyuas ntxiv yuav tsum tau teev ua ntej ntau lawm. Cov ntawv luam tawm HPS 50W cov ntaub ntawv khoom siv ASTM A673 rau CVN kuaj thiab qhia cov neeg yuav khoom kom nug thaum yuav tsum tau kuaj.
Vim li cas thiaj tau HPS 50W Cov Qauv Hlau Phaj los ntawm Gnee?
Rau kev tsim cov choj steel, kev lees paub qhov tseeb ntawm qib thiab cov kev xav tau yog qhov tseem ceeb. Gnee tuaj yeem ua haujlwm nrog cov neeg yuav khoom los tshuaj xyuas qhov xav tau ntawm phaj qhov ntev, xaj kom muaj nuj nqis, siv cov qauv tsim, ntawv pov thawj cov khoom siv, kev soj ntsuam cov cai, thiab qhov chaw nres nkoj ua ntej npaj cov lus hais. Qhov no pab ua kom cov txheej txheem xa khoom nrog cov kev xav tau thiab kev xa khoom ntawm qhov project.
Gnee kuj tau sau tseg txog kev xa tawm nrog A709 Qib 345W huab cua steel daim hlau thiab cov kav dej. Ib qho khoom xa tuaj tau tag nrho 1,198.075 metric tons thiab tau teem caij rau ntawm CIF Hai Phong Port, Nyab Laj. Qhov no qhia tau hais tias muaj feem xyuam rau A709 weathering steel export kev sib koom ua ke, tab sis nws yuav tsum tsis txhob raug sawv cev raws li kev xa khoom tshwj xeeb ntawm HPS 50W.
Thov ib daim ntawv pov thawj rau ASTM A709 HPS 50W Steel Phaj
Txhawm rau thov cov lus hais, thov muab qhov yuav tsum tau muaj thickness, dav, ntev, tag nrho cov khoom, qhov chaw nres nkoj, xav tau ASTM tsab, qhov yuav tsum tau kuaj xyuas, thiab lub sijhawm xa khoom. Yog tias qhov project choj muaj cov kev qhia tshwj xeeb ntxiv lossis kev tshuaj ntsuam xyuas, suav nrog lawv nrog kev nug kom cov lus pom zoo tuaj yeem tshuaj xyuas raws li.
