SA516 Qib 70yog siv dav, siab - zog, qis- alloy carbon steel phaj teev los ntawm ASME / ASTM rau cov hlab ntsha siab, boilers, thiab cov ntawv siv zoo sib xws uas yuav tsum tau muaj kev sib txuas zoo thiab tawv ntawm qhov nruab nrab mus rau qhov kub thiab txias, muaj zog tensile ntau dua (70-90 ksi / 485-620 MPa), ua rau nws lub tswv yim zoo li lwm yam kev xav tau. thiab chemical processing.
Cov yam ntxwv tseem ceeb
Weldability: Zoo heev ntswj toughness thiab weldability.
Qib: Ib feem ntawm tsev neeg SA516 (Qib 55, 60, 65, 70); Qib 70 muab lub zog siab tshaj plaws.
Hom khoom: Siab Vessel Quality (PVQ) Carbon Steel.
Lub zog: Siab tensile zog (70-90 ksi los yog 485-620 MPa) thiab qhov tsawg kawg nkaus yield zog ntawm 38 ksi (260 MPa).
Tshuaj muaj pes tsawg leeg ntawm ASME SA516 Gr 70
|
Element |
Thickness<12.5mm |
12.5-50 hli |
50-100 hli |
100-200 hli |
>200 hli |
|---|---|---|---|---|---|
|
Cov pa roj carbon (C) |
Tsawg dua lossis sib npaug li 0.27 |
Tsawg dua lossis sib npaug li 0.28 |
Tsawg dua los yog sib npaug li 0.30 |
Tsawg dua lossis sib npaug li 0.31 |
Tsawg dua lossis sib npaug li 0.31 |
|
Silicon (Si) |
0.15-0.40 |
0.15-0.40 |
0.15-0.40 |
0.15-0.40 |
0.15-0.40 |
|
Manganese (Mn) |
0.85-1.20 |
0.85-1.20 |
0.85-1.20 |
0.85-1.20 |
0.85-1.20 |
|
Phosphorus (P) |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
|
Sulfur (S) |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Tsawg dua lossis sib npaug li 0.035 |
Mechanical Properties ntawm ASME SA516 Gr 70
|
Khoom |
Tus nqi |
|---|---|
|
Yield zog (Min MPa) |
260 |
|
Tensile zog (MPa) |
485-620 |
|
Elongation (hauv 200mm, min%) |
21 |
|
Elongation (hauv 50mm, min%) |
25 |
|
Charpy Impact (ntawm -46 degree, xaiv tau) |
Ntau dua lossis sib npaug li 27 J |
Qib sib npaug ntawm ASME SA516 Gr 70
|
Txuj |
Qib sib npaug |
|---|---|
|
ASTM |
ASTM A 516 GR 70 |
|
TS EN 10028-2 |
P355GH |
|
TIAB SA 17155 |
19mn 6 |
|
JIS G3115 |
SPV355 |
|
GB/T 1591 |
Q345R |
|
SIB 1501 |
224-490A/B |
qhov zoo
1. Lub zog tensile siab
Lub zog siab tshaj plaws hauv chav kawm:Tawm ntawm plaub qib hauv A516 tsev neeg (55, 60, 65, thiab 70), Qib 70 muaj lub zog tensile siab tshaj (485–620 MPa), ua rau nws zoo tagnrho rau kev siv siab -siab.
Structure Integrity:Nws lub zog tawm los siab (tsawg kawg 260 MPa) ua kom muaj kev tiv thaiv zoo tshaj rau deformation hauv kev ntxhov siab.
2. Exceptional Notch Toughness
Tsawg-Kev Ua Haujlwm Kub:Nws yog tsim tshwj xeeb los tswj lub zog muaj zog hauv qhov chaw txias. Nws feem ntau dhau Charpy V- qhov ntsuas ntsuas ntawm qhov ntsuas kub qis li-46 ° F (-50 ° F).
Brittle Fracture Resistance:Qhov zoo - cov qauv nplej (feem ntau ua tiav los ntawm normalizing) muab kev tiv thaiv tseem ceeb rau kev tawg sai sai hauv cov chaw tsim khoom muaj kev phom sij.
3. Zoo Weldability
Cov ntsiab lus carbon tsawg:Nws cov chemistry yog tswj hwm nruj me ntsis (Carbon Tsawg dua lossis sib npaug ntawm 0.27-0.31%) kom ntseeg tau zoo heev weldability siv cov txheej txheem xws li SMAW, GTAW, thiab SAW.
Txo Cracking Risk:Qhov sib npaug ntawm cov pa roj carbon tsawg tsawg txo qhov kev pheej hmoo ntawm hydrogen-induced cracking nyob rau hauv tshav kub- cuam tshuam cheeb tsam (HAZ).
4. Kev Tiv Thaiv Tshwj Xeeb (Sour Service)
HIC Resistance:Thaum tsim los rau cov qauv NACE tshwj xeeb, nws nthuav tawm tshwj xeeb rau Hydrogen Induced Cracking (HIC), ua rau nws muaj kev nyab xeeb rauqaub gasib puag ncig uas muaj H₂S.
Corrosion kam rau ua:Ntau dua manganese thiab silicon cov ntsiab lus muab kev txhim kho oxidation thiab corrosion kuj piv rau cov qauv hlau zoo li A36.
5. Kev Lag Luam Muaj & Ntau Yam
Kev lag luam Standard:Vim tias nws tau lees paub thoob ntiaj teb los ntawm ASME Boiler thiab Pressure Vessel Code, nws tau yooj yim muaj nyob rau hauv ntau hom thicknesses (6mm txog 200mm).
Daim ntawv thov dav:Nws ua haujlwm raws li tus nqi- daws teeb meem zoo rau txhua yam los ntawm cov tso tsheb hlau luam thiab cov khoom siv hluav taws xob sib hloov mus rau lub tshuab hluav taws xob nuclear thiab cov nruas.
Cov ntawv thov tseem ceeb
Cov nkoj siab hauv Petrochemical Kev Lag Luam: Raws li cov khoom tseem ceeb rau qis -kub thiab nruab nrab- cov hlab ntsha kub siab, SA516 Qib 70 yog siv dav hauv cov roj refining, chemical synthesis, thiab natural gas processing. Nws yog qhov tsim nyog rau kev tsim cov reactors, cov khoom sib cais, cov tso tsheb hlau luam, thiab cov khoom siv hluav taws xob sib hloov uas dais nruab nrab siab (feem ntau yog 10-30 MPa) thiab ua haujlwm ntawm -30℃txog 450 degree, tiv thaiv corrosion los ntawm lub teeb hydrocarbons, chav, thiab tsis muaj zog acids.
Cov cuab yeej tsim hluav taws xob: Nws yog siv rau hauv thermal fais fab nroj tsuag thiab nuclear fais fab auxiliary systems. Tshwj xeeb tshaj yog, nws yog siv los ua boiler nruas, header kav, thiab siab pipelines rau theem nrab circuits, uas yuav tsum tau tiv taus siab -kub kub (qis dua 400 degree) thiab ruaj khov siab, ua kom muaj kev ruaj ntseg ntawm lub zog tsim lub voj voog.
Roj thiab roj tsheb thauj thiab khaws cia: Rau onshore thiab offshore roj thiab roj pipelines, cia tso tsheb hlau luam, thiab hloov chaw nres tsheb, SA516 Qib 70 yog ib tug zoo tagnrho cov ntaub ntawv vim nws zoo weldability thiab cuam tshuam toughness. Nws hloov mus rau qhov hnyav sab nraum zoov, nrog rau qhov kub thiab txias thiab corrosion me me los ntawm cov av lossis dej hiav txwv vapor.
Cov khoom siv tshuaj thiab tshuaj: Nws yog siv los tsim cov cuab yeej siv los tuav cov khoom tsis muaj zog corrosive, xws li cov khoom siv tshuaj, cov tank sib tov, thiab cov kav xa dej hauv kev lag luam tshuaj, zaub mov, thiab tshuaj zoo. Nws cov khoom siv kho tshuab zoo heev kom ntseeg tau qhov nruj thiab ruaj khov ntawm cov khoom siv thaum lub sijhawm ua haujlwm ntev -.
Boiler thiab Heat Exchanger Cheebtsam: Hauv kev lag luam boilers thiab plhaub - thiab - raj kub exchangers, nws yog siv los ua plhaub, raj ntawv, thiab baffles. Nws tuaj yeem tiv taus qhov kev ntxhov siab hloov pauv los ntawm kev hloov pauv kub thiab nruab nrab ntws, zam cov khoom qaug zog thiab to.
Cov Cai Thov
Qhov kub thiab txias: Nws yog haum rau qis-kub mus rau nruab nrab- qhov chaw ua haujlwm kub, nrog rau qhov kev pab cuam yam tsawg kawg nkaus ntawm -30℃thiab qhov siab tshaj plaws ua haujlwm kub ntawm 450 degree. Tshaj qhov ntau yam no yuav txo nws qhov toughness thiab lub zog.
Kev xav tau siab: Nws yog tsim los rau nruab nrab - cov cuab yeej siv siab, nrog qhov siab tshaj plaws ua haujlwm siab (MAWP) txog li 30 MPa. Lub peev xwm tshwj xeeb muaj peev xwm nyob ntawm qhov tuab ntawm cov khoom siv thiab kev ua haujlwm kub, uas yuav tsum tau suav thiab txheeb xyuas raws li cov qauv tsim nyog (xws li ASME BPVC).
Nruab nrab Compatibility: Nws yog sib xws nrog cov uas tsis yog - muaj zog corrosive media, xws li dej, chav, lub teeb hydrocarbons, thiab nruab nrab daws. Nws tsis haum rau ib puag ncig uas muaj zog acids, muaj zog alkalis, lossis chloride ion corrosion (xws li dej hiav txwv immersion), tshwj tsis yog tias muaj kev tiv thaiv kev tiv thaiv - kev kho corrosion.
Vuam thiab txheej txheem txheej txheem: Vuam yuav tsum tau ua los ntawm cov neeg siv khoom tsim nyog siv cov txheej txheem tsim nyog (xws li SMAW, GTAW). Preheating (100-150 degree) thiab kev kho cua sov tom qab vuam (PWHT) yuav tsum tau tshem tawm cov kev ntxhov siab thiab tsis txhob tawg. Txiav thiab sib sau yuav tsum tau ua nyob rau hauv chav tsev kub kom tiv thaiv cov khoom brittleness.
Zoo thiab Standard Ua Raws Cai: Cov khoom siv yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm ASME SA516 / SA516M tus qauv, suav nrog tshuaj lom neeg muaj pes tsawg leeg (C Tsawg dua lossis sib npaug ntawm 0.30%, Mn=1.00-1.60%, thiab lwm yam) thiab cov khoom siv kho tshuab (tensile zog=485-655} MPa, yield zog ntau dua lossis sib npaug li 260 MPa). Daim ntawv pov thawj kev tshuaj xyuas lub Hoobkas thiab cov ntawv ceeb toom tsis yog -kev ntsuas kev puas tsuaj (NDT) yuav tsum tau ua ua ntej thov.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
SA516 Qib 70 yog dab tsi?
SA516 Qib 70 yog carbon steel phaj specification dav siv hauv cov hlab ntsha siab. Nws yog standardized los ntawm ASME, featuring zoo toughness, weldability thiab siab -kub tsis kam, haum rau qis mus rau nruab nrab kub kev pab cuam ib puag ncig.
Tus qauv twg tswj hwm SA516 Qib 70?
SA516 Qib 70 yog tswj hwm los ntawm ASME Boiler thiab Pressure Vessel Code (BPVC), tshwj xeeb hauv Tshooj II, Tshooj A. Cov qauv no txhais tau tias nws cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, kev tsim khoom thiab kev sim.
Dab tsi yog cov khoom tseem ceeb ntawm SA516 Qib 70?
Cov tshuaj lom neeg tseem ceeb muaj xws li carbon (C: 0.28-0.33%), manganese (Mn: 0.79-1.06%), phosphorus (P Less dua lossis sib npaug li 0.035%), sulfur (S Less dua lossis sib npaug li 0.035%), silicon (Si: 0.15-0.4%) cov ntsiab lus
Qhov tsawg kawg nkaus tensile lub zog ntawm SA516 Qib 70 yog dab tsi?
Qhov tsawg kawg nkaus tensile lub zog ntawm SA516 Qib 70 yog 485 MPa (70 ksi). Cov cuab yeej no ua kom cov khoom muaj peev xwm tiv taus siab thiab thauj khoom hauv kev siv lub nkoj siab tsis tas yuav deformation lossis tawg.
Qhov tsawg kawg nkaus tawm lub zog ntawm SA516 Qib 70 yog dab tsi?
SA516 Qib 70 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 260 MPa (37.7 ksi). Tus nqi no sawv cev rau qhov kev ntxhov siab uas cov khoom pib nthuav tawm cov yas deformation, tseem ceeb heev rau kev ua haujlwm siab ntawm cov hlab ntsha.
Dab tsi yog qhov kev pab cuam qhov kub thiab txias rau SA516 Qib 70?
SA516 Qib 70 raug pom zoo rau kev pabcuam kub ntawm -30℃(-22℃F) txog 450℃(842℃F). Nws tswj cov khoom siv kho tshuab ruaj khov nyob rau hauv qhov ntau, haum rau feem ntau cov hlab ntsha ua haujlwm siab.
Vim li cas SA516 Qib 70 haum rau cov hlab ntsha siab?
Nws yog tsim rau cov hlab ntsha siab vim nws zoo heev ua ke ntawm toughness, weldability, thiab siab tsis kam. Nws tuaj yeem tiv taus kev kub ntxhov sab hauv thiab sab nraud, tiv thaiv kev qaug zog, thiab tau yooj yim fabricated rau hauv ntau lub nkoj duab los ntawm vuam.
Cov txheej txheem vuam zoo li cas nrog SA516 Qib 70?
SA516 Qib 70 yog sib xws nrog cov txheej txheem vuam, suav nrog cov hlau thaiv hlau arc vuam (SMAW), roj hlau arc vuam (GMAW), flux-cored arc vuam (FCAW), thiab submerged arc vuam (SAW), kom ntseeg tau tias muaj zog sib koom ua ke.
Puas yog SA516 Qib 70 xav tau preheating ua ntej vuam?
Preheating ua ntej vuam feem ntau pom zoo rau SA516 Qib 70, tshwj xeeb tshaj yog rau cov phaj tuab lossis hauv qhov chaw txias. Qhov kub ntawm qhov kub thiab txias yog li ntawm 60℃txog 150℃los tiv thaiv weld tawg thiab txhim kho weld zoo.
Dab tsi ncej-weld heat treatment (PWHT) yog xav tau rau SA516 Qib 70?
Common PWHT rau SA516 Qib 70 yog kev ntxhov siab rau kev ntxhov siab, feem ntau ntawm 595℃txog 650 degree, tuav rau lub sijhawm txaus, ces txias maj mam. Qhov no txo cov seem weld kev nyuaj siab thiab txhim kho cov khoom ductility thiab toughness.