Hauv kev ua haujlwm ntawm cov hlab ntsha siab, piping, thiab lwm yam engineering,A516 GR 70thiab A105 yog ob hom khoom siv ntau heev tab sis tsis meej pem ntau qib. Ob leeg koom nrog ASTM (American Society for Testing and Materials) cov qauv txheej txheem, tab sis lawv txawv ntawm lawv cov ntaub ntawv siv tau, kev ua tau zoo, thiab cov xwm txheej siv. Yuxin Steel systematically sib piv ob cov ntaub ntawv los ntawm ntau qhov kev xav los pab koj xaiv cov qib steel kom raug rau koj cov kev xav tau xaiv cov khoom siv.
Txhawm rau yuav cov hlau phaj, thov mus saib hauv lub vev xaib hauv qab no.
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I. Cov Qauv Khoom Siv
A516 GR 70
- Txheem:ASTM A516/A516M
- Khoom siv:Medium Carbon Manganese Steel Phaj
- Daim Ntawv Thov:Hlau Phaj
- Daim Ntawv Thov Tseem Ceeb:Hlau phaj rau nruab nrab- thiab qis-kub siab cov hlab ntsha
A516 GR70 yog ib qho ntawm cov khoom siv dav siv ntau tshaj plaws hauv kev lag luam hauv lub nkoj siab, tshwj xeeb tshaj yog tsim rau cov khoom siv uas yuav tsum tau muaj zog zoo xws li boilers, tank tank, thiab cov khoom siv hluav taws xob.
A105
- Txheem:ASTM A105/A105M
- Khoom siv:Carbon Steel Forgings
- Daim Ntawv Thov:Forgings
- Daim Ntawv Thov Tseem Ceeb:Siab-cov khoom siv hauv cov kav dej
A105 feem ntau yog siv los tsim cov forgings xws li flanges, valve lub cev, cov yeeb nkab fittings, thiab cov pob qij txha, ua cov khoom siv classic xaiv rau cov kav dej.
II. Chemical Composition thiab Mechanical Properties
1. Chemical Composition (Hloov ntau yam)
A516 GR70: C Tsawg dua lossis sib npaug 0.30%, Mn 0.85–1.20%, P Tsawg dua lossis sib npaug 0.035%, S Tsawg dua lossis sib npaug 0.035%, Si 0.15–0.40%. Kev tswj nruj nruj ntawm cov sulfur thiab phosphorus cov ntsiab lus txhim khu kev sib txuas thiab tawg tsis kam.
A105: C Tsawg dua lossis sib npaug 0.35%, Mn 0.60–1.05%, P Tsawg dua lossis sib npaug 0.040%, S Tsawg dua lossis sib npaug 0.050%, Si Less dua lossis sib npaug 0.40%. Me ntsis cov ntsiab lus carbon ntau dua rau kev tsim nyog nrog cov txheej txheem forging.
2. Cov cuab yeej cuab tam tseem ceeb
|
Yam khoom |
A516 GR 70 |
A105 |
|
Tensile zog |
485-620 MPa |
Ntau dua lossis sib npaug li 485 MPa |
|
Yield zog |
Ntau dua lossis sib npaug li 260 MPa |
Ntau dua lossis sib npaug li 250 MPa |
|
Elongation |
Ntau dua lossis sib npaug li 21% |
Ntau dua lossis sib npaug li 22% |
|
Tsawg-Tsuas Muaj Kev Nyuaj Siab Toughness |
Muaj peev xwm cuam tshuam lub zog ntawm -20℃~ -45 degree, tiv taus qhov kub thiab txias brittleness |
Tsis tas yuav tsum muaj qhov ntsuas kub tsawg-, tsuas yog rau qhov kub thiab txias |
|
Hardness |
- |
HB Tsawg dua lossis sib npaug rau 187 |
III. Core Application Scenarios
Tsom ntsoov rau cov hlab ntsha siab thiab siab-cov kabmob plhaub, feem ntau rau nruab nrab- qhov kub thiab txias - qhov chaw siab:
Petrochemical cia tanks, reactors, boiler nruas
LNG cryogenic cia khoom, roj- roj cais cov hlab ntsha
Nruab nrab- qhov kub tsis tshua muaj siab nyob rau hauv cov chaw tsim hluav taws xob, cov hlab ntsha txhawb siab hauv cov chaw tsim hluav taws xob nuclear
A105 Daim Ntawv Thov Scenarios
Tsom ntsoov rau cov kav dej txuas txuas, feem ntau yog rau ambient lossis siab -kub, siab- ntsuas cov rooj sib txoos:
Forged yeeb nkab fittings (flanges, luj tshib, reducers, thiab lwm yam)
Valve lub cev, valve npog, pipeline fasteners
Roj thiab roj kis tau tus mob, kev kho dej, kev lag luam pipelines
IV. Qhov sib txawv ntawm kev ua thiab kev siv yam ntxwv
Weldability
A516 GR70 yog tsim tshwj xeeb rau kev vuam, uas muaj cov pa roj carbon tsawg dua thiab txo qhov kev pheej hmoo tawg, ua rau nws tsim nyog rau ntau - hla vuam ntawm cov hlab ntsha siab.
A105 forgings qhia me ntsis tsis muaj zog weldability, yuav tsum tau preheating rau tuab -section welds.
Cov txheej txheem tsim
A516 GR70 feem ntau cuam tshuam nrog kev txiav, dov, thiab vuam, zoo tagnrho rau kev tsim loj- qhov ntev ntawm lub plhaub.
A105 feem ntau yog forged thiab machined, haum rau precision yeeb nkab fittings thiab irregular connectors.
Qhov kub thiab txias
A516 GR70: -45℃rau +345 degree, npog cov ntawv thov kub qis.
A105: -29℃rau +425℃. Tsis muaj guaranteed toughness ntawm tsawg kub; hauv qab -29 degree, hloov nrog qhov kub thiab txias forgings (piv txwv li, A350 LF2).
V. Phau Ntawv Qhia Txog Kev Xaiv Cov Khoom Tseem Ceeb
Rau cov hlab ntsha siab, lub plhaub ntim cia, lossis cov ntawv thov uas cuam tshuam nrog qhov chaw ua haujlwm cryogenic, A516 GR70 yuav tsum raug xaiv kom ua tau raws li ASME siab lub nkoj cov cai rau qis - kub toughness.
Rau cov kav dej flanges, cov yeeb nkab fittings, lossis valve forgings ua haujlwm ntawm qhov kub thiab txias, A105 yog qhov nyiam rau nws cov nqi -kev ua tau zoo thiab kev ua haujlwm zoo dua.
nruj me ntsis txwv tsis pub hla- daim ntawv hloov pauv:A516 GR70 daim hlau tsis tuaj yeem ncaj qha mus rau hauv cov yeeb nkab fittings, thiab A105 forgings tsis tuaj yeem dov rau hauv cov hlab ntsha siab.
Rau kev sib txuas ntawm cov kav dej hauv qhov qis- qhov kub thiab txias (tsawg dua lossis sib npaug rau -20 degree): A105 tsis tsim nyog; xaiv qhov kub thiab txias forgings xws li A350 LF2.
VI. Cov ntsiab lus
Txawm hais tias ob qho tib si A516 GR70 thiab A105 yog carbon steels, lawv txawv kiag li nyob rau hauv tus qauv tso, daim ntawv cov khoom, qhov tseem ceeb ntawm kev ua tau zoo, thiab daim ntawv thov scenarios. A516 GR70 yog qhov nruab nrab-rau- qis- kub siab lub nkoj phaj, nrog cov txiaj ntsig tseem ceeb hauv qis- kub toughness thiab weldability.
A105 yog cov yeeb nkab forging kev sib txuas, nrog cov ntsiab lus zoo hauv forging zog thiab machinability.
Kev xaiv engineering yuav tsum nruj me ntsis sib piv cov cuab yeej siv thiab kev ua haujlwm kub thaum ua raws li ASTM / ASME cov cai. Qhov no ua kom muaj kev nyab xeeb ntawm cov cuab yeej siv thiab kev tswj cov nqi khoom.
Yuxin Steel muaj ntau hom phaj qib. Yog tias koj tsis paub meej txog kev xaiv cov hlau phaj tsim nyog,thov qhia koj cov kev xav tau. Peb muab cov kev daws teeb meem customized.
