A387 Qib 5 Chav Kawm 2 - zoo chromium-molybdenum alloy steel phaj
A387 Qib 5 Chav Kawm 2- zoo chromium-molybdenum alloy steel phaj, zoo tagnrho rau siv nyob rau hauv siab hlab ntsha thiab muaj boilers vim nws yog zoo heev tshav kub resistant thiab anti corrosion zog. Peb tuaj yeem muab cov phiaj xwm los ntawm peb tus kheej cov khoom lag luam hauv Birmingham lossis ncaj qha los ntawm lub zeb thiab tag nrho cov phaj tuaj nrog cov ntawv pov thawj zeb kuaj thiab tus kheej stamping
Qib sib txawv ntawm ASTM / ASME Qib 5 Chromium-Molybdenum Alloy
Masteel qhov ntau ntawm ASTM / ASME A387 Qib 5 chromium-molybdenum alloy cov khoom muaj nyob rau hauv ntau qib uas tau teev tseg hauv qab no.
ASTM A387 Qib 5 Qib 2
ASME SA387 Qib 5 Chav Kawm 2
Qib sib npaug ntawm A387 Qib 5 Chromium-Molybdenum Alloy
Qib sib npaug ntawm A387 Qib 5 chromium-molybdenum alloy yog raws li hauv qab no:
|
BS |
EN |
ASTEM / ASME |
DIN |
|
- |
- |
A387-22-2 |
- |
Chromium thiab Molybdenum Composition ntawm A387 Qib 5 Chromium-Molybdenum Alloy
Cov ntsiab lus chromium thiab molybdenum ntawm A387 Qib 5 chromium-molybdenum alloy (raws li ASTM specification) tau piav qhia hauv cov lus hauv qab no.
|
Lub npe |
Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
|
A387 Qib 5 |
5.00% |
0.50% |
Tensile Requirements rau A387 Qib 5 Chrome Molybdenum Chav Kawm 2 Phaj
Cov kev cai tensile rau A387 Qib 5 chromium-molybdenum alloy Class 2 Phaj yog teev nyob rau hauv cov lus hauv qab no.
|
Lub npe |
Kev xav tau |
Qib 5 |
|
A387 Qib 5 |
Tensile zog, ksi [MPA] |
75 txog 100 [515 rau 690] |
|
Yield zog, min, ksi [MPa] / (0.2% offset) |
45 [310] |
|
|
Elongation hauv 8 nti. [200mm], min % |
- |
|
|
Elongation hauv 2 nti. [50mm], min, % |
18 |
|
|
Txo thaj tsam, min% |
45 ( ntsuas ntawm cov qauv puag ncig) |
Tshuaj muaj pes tsawg leeg ntawm A387 Qib 5 Chromium-Molybdenum Alloy
Cov tshuaj muaj pes tsawg leeg ntawm A387 Qib 5 chromium-molybdenum alloy los ntawm cov cua sov thiab cov khoom lag luam tsom xam tau sau tseg hauv cov lus hauv qab no.
|
Lub ntsiab |
Kev tsom xam |
Chemical Composition (%) Inc. Qib & UNS No. |
|
Qib 5 (UNS: S50200) |
||
|
Cov pa roj carbon: |
Kev Ntsuas Kub: |
0.15 max |
|
Manganese: |
Kev Ntsuas Kub: |
0.30 - 0.60 |
|
Phosphorus: |
Kev Ntsuas Kub: |
0.035 |
|
Sulfur (max): |
Kev Ntsuas Kub: |
0.030 |
|
Silicon: |
Kev Ntsuas Kub: |
0.50 max |
|
Chromium: |
Kev Ntsuas Kub: |
4.00 - 6.00 |
|
Molybdenum: |
Kev Ntsuas Kub: |
0.45 - 0.65 |
Tensile Test Requirements rau Chromium-Molybdenum Alloy
Cov khoom siv yuav tsum tau sim siv cov qauv kuaj yuav paub meej txog cov kev xav tau tensile raws li tau teev tseg hauv cov kev cai tensile rau A387 Qib 5 chromium-molybdenum alloy Class 2 daim hlau saum toj no.
Cov txheej txheem kuaj pom zoo rau Chromium-Molybdenum Alloy
Cov kev cai hauv qab no thiab cov txheej txheem kuaj (uas tsis yog qhov yuav tsum tau ua) suav tias tsim nyog rau chromium-molybdenum alloy:
Kev kho lub tshuab nqus tsev
Kev tshuaj xyuas khoom
Kev Ntsuas Kev Ntsuas Ntxiv
Charpy V-Ntch Impact Test
Poob Nyhav Test
High Temperature Tension Test
Kev kuaj ultrasonic
Magnetic Particle Examination
1. Cov tshuaj muaj pes tsawg leeg ntawm A387 Qib 5 txawv li qib 11 lossis qib 12 li cas?
A387 Qib 5 yog ntau dua -chromium alloy steel, feem ntau muaj nyob ib ncig ntawm 5% chromium thiab 0.5% molybdenum. Qhov no tso nws nyob nruab nrab ntawm Qib 11 ntau dua (~ 1.25% Cr) thiab Qib 22 (~ 2.25% Cr), muab nws qhov zoo sib xws ntawm oxidation tsis kam thiab nce siab -qhov kub thiab txias piv rau qis dua- qib alloy, thaum muaj peev xwm ua tau tus nqi ntau dua -{3} kev pab cuam ntau dua li steel.
2. Dab tsi yog Qhov Kev Pab Cuam Tshaj Plaws Hauv Tsev Kawm Ntawv Qib Siab 2?
Lub hom phiaj tseem ceeb ntawm A387 Qib 5 Chav Kawm 2 yog nyob rau hauv nws qhov kev tiv thaiv oxidation zoo dua thiab muaj zog tuav ntau dua ntawm qhov kub thiab txias feem ntau yog li ntawm 540℃mus rau 600℃(1000℃F txog 1112℃F), tshaj qhov muaj peev xwm ntawm Qib 11 lossis 12. Qhov no ua rau nws tsim nyog rau cov khoom siv hauv catalytic furnacetro lwm qhov kev pabcuam hnyav, kev hloov pauv ntawm cov khoom siv hluav taws xob, scaling thiab creep yog kev txhawj xeeb tseem ceeb.
3. Dab tsi yog qhov tseem ceeb ntawm Vuam thiab Fabrication Considerations rau A387 Gr.5 Cl.2?
Vuam A387 Qib 5 Chav Kawm 2 yuav tsum muaj cov txheej txheem nruj vim nws cov ntsiab lus alloy siab dua. Nws xav tau qhov yuav tsum tau ua kom sov (feem ntau yog 175-250℃/ 350-480℃F) thiab nruj tswj qhov kub thiab txias los tiv thaiv qhov nyuaj, tawg-sensitive microstructures. Tsis tas li ntawd, qhov yuav tsum tau ua tom qab Weld Heat Treatment (PWHT) nyob rau hauv thaj tsam ntawm 675-730℃(1250-1350℃F) yog qhov tseem ceeb kom npau taws rau thaj tsam weld, txo kev ntxhov siab, thiab rov ua kom corrosion.
4. Tus qauv kho cua sov yog dab tsi rau A387 Qib 5 Chav Kawm 2 Phaj?
A387 Qib 5 Chav Kawm 2 daim hlau tau muab rau hauv cov xwm txheej zoo li qub thiab Tempered. Normalizing muaj cua sov saum toj no qhov kev hloov pauv thiab cua txias kom ua kom zoo dua cov qauv nplej, ua raws li tempering ntawm sub- kub tseem ceeb kom ua tiav qhov kev pom zoo ua ke ntawm lub zog thiab cov khoom siv tau teev tseg hauv tus qauv (feem ntau yog qhov tsawg kawg nkaus lub zog ntawm 310 MPa / 45 ksi).
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
