Hlau Phaj - Cov ntaub ntawv ntsig txog lub nkoj
Dab tsi yog SA387 Steel Phaj - Siab Vessel?
SA387 steel phaj yog chromium-molybdenum alloy steel tshwj xeeb tsim los rau siab - kub thiab siab - kev pabcuam siab hauv welded siab hlab ntsha. Nws muaj kev nkag siab zoo heev, kev tiv thaiv corrosion, thiab kev ruaj ntseg ntawm qhov kub siab, ua rau nws yog cov khoom siv rau kev siv tseem ceeb xws li refinery reactors, tshav kub exchangers, thiab lub hwj chim boilers.
SA387 / ASTM A387 GR 5 CLASS 2
Lub siab zoo chrome molybdenum alloy steel phaj npaj tshwj xeeb rau kev siv hauv weldable carbon steel siab hlab ntsha ntawm qhov kub siab. Ntxiv molybdenum muab cov khoom siv kub tensile zog thiab chromium muab kev txhim kho corrosion.
SA387 / ASTM A387 GR 9 CLASS 2
Weldable carbon steel daim hlau rau cov hlab ntsha siab thiab boilers siv nyob rau hauv siab kub. Cov khoom siv tau txais txiaj ntsig los ntawm kev ntxiv chromium thiab molybdenum uas muab cov hlau ntau dua corrosion tsis kam thiab tiv taus cua sov. SA387 Qib 9 yog siv los ntawm cov kws tsim khoom uas ua haujlwm rau kev lag luam roj, roj thiab petrochemical.
SA387 / ASTM A387 GR 11 CLASS 2
ASME SA387 Qib 11 Chav Kawm 2 yog siv rau hauv ntau hom kev lag luam thiab muaj txiaj ntsig zoo, tshwj xeeb tshaj yog nyob rau hauv kev lag luam roj, roj thiab petrochemical, qhov twg cov kua thiab roj feem ntau khaws cia ntawm qhov kub thiab txias.
Cov qib siab dua ntawm chromium kuj tseem muab kev tiv thaiv corrosion thiab oxidation zoo heev, uas yog ib qho yuav tsum tau siv hauv kev siv roj qaub.
SA387 / ASTM A387 GR 12 CLASS 2
Engineered rau siv nyob rau hauv siab kub kev pab cuam, ASME SA387 Qib 12 yog ib tug chrome molybdenum carbon alloy hlau rau siv nyob rau hauv weldable siab hlab ntsha thiab muaj boilers.
Cov khoom siv tau txais txiaj ntsig los ntawm cov chromium ntxiv uas muab kev tiv thaiv zoo heev thiab oxidation ua rau nws zoo tagnrho rau cov kev pabcuam qaub hauv kev lag luam roj thiab roj.
SA387 / ASTM A387 GR 22 CLASS 2
Peb muab ASME SA387 Qib 22 Chav Kawm 2 daim hlau rau cov neeg tsim khoom ua haujlwm rau kev lag luam roj, roj thiab petrochemical. Cov kev lag luam no xav tau lub siab lub nkoj qib steel uas ua haujlwm zoo hauv qhov kub thiab txias thiab peb cov khoom siv rau lub hom phiaj no zoo. Thiab nrog zoo corrosion thiab oxidation kuj, SA387 Qib 22 Class 2 daim hlau yog ib qho kev xaiv zoo.
SA387 / ASTM A387 GR 91 CLASS 2
Qhov twg tsis kam mus rau qhov kub thiab txias thiab zoo tiv thaiv - cov yam ntxwv corrosion yuav tsum tau, ASME SA387 Qib 91 Qib 2 carbon alloy steel phaj yog cov khoom siv los xav txog. Nws yog lub siab hlab ntsha qib steel uas feem ntau siv los ntawm fabricators uas muab cov roj thiab roj kev lag luam.
Vim cov ntaub ntawv zoo heev corrosion resistant zog, SA387 Qib 91 kuj yog ib qho kev xaiv rau siv nyob rau hauv qaub kev pab cuam ib puag ncig. Cov khoom siv tau zoo weldability thiab nrog nws cov cua sov resistant zoo, cov khoom yog ib tug ntau yam steel uas yuav siv tau nyob rau hauv ntau daim ntaub ntawv.
ASTM A387/ SA387
Siab Vessel Phaj, Alloy Steel, Chromium-Molybdenum
HAUV TSEV KAWM NTAWV TSHAJ PLAWS
Mechanical Properties:
|
A387 Qib 5 |
A387 Qib 9 |
A 387 Qib 11 |
A 387 Qib 12 |
A 387 Qib 22 |
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|
Chav Kawm 1 |
Chav kawm 2 |
Chav Kawm 1 |
Chav kawm 2 |
Chav Kawm 1 |
Chav kawm 2 |
Chav Kawm 1 |
Chav kawm 2 |
Chav Kawm 1 |
Chav kawm 2 |
|
|
Tensile |
60-85 |
75-100 |
60-85 |
75-100 |
60-85 |
70-90 |
50-80 |
65-85 |
60-85 |
75-100 |
|
Lub zog (ksi) |
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|
Tensile |
415-585 |
515-690 |
415-585 |
515-690 |
415-585 |
485-620 |
380-550 |
450-585 |
415-585 |
515-690 |
|
Lub zog (MPa) |
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|
Yield |
30 |
45 |
30 |
45 |
35 |
45 |
33 |
40 |
30 |
45 |
|
Lub zog (ksi) |
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|
Yield |
205 |
310 |
205 |
310 |
240 |
310 |
230 |
275 |
205 |
310 |
|
Lub zog (MPa) |
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|
Elongation |
19 |
18 |
18 |
19 |
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|
hauv 200mm (%) |
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|
Elongation |
18 |
18 |
18 |
18 |
22 |
22 |
22 |
22 |
18 |
18 |
|
hauv 50mm (%) |
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|
Txo ntawm |
45 |
45 |
45 |
45 |
45 |
45 |
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|
thaj tsam hauv% |
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Chemical Properties:
|
Qib 5 |
Qib 9 |
Qib 11 |
Qib 12 |
Qib 22 |
|
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Cov pa roj carbon |
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|
Kev Ntsuas Kub |
0.15 max |
0.15 max |
0.05 – 0.17 |
0.05 – 0.17 |
0.05 – 0.15 |
|
Kev tshuaj xyuas khoom |
0.15 max |
0.15 max |
0.04 – 0.17 |
0.04 – 0.17 |
0.04 – 0.15 |
|
Manganese |
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|
Kev Ntsuas Kub |
0.3 – 0.6 |
0.30 – 0.6 |
0.4 – 0.65 |
0.4 – 0.65 |
0.3 – 0.6 |
|
Kev tshuaj xyuas khoom |
0.25 – 0.66 |
0.25 – 0.66 |
0.35 – 0.73 |
0.35 – 0.73 |
0.25 – 0.66 |
|
Phosphorous |
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|
Kev Ntsuas Kub |
0.035 |
0.03 |
0.035 |
0.035 |
0.035 |
|
Kev tshuaj xyuas khoom |
0.035 |
0.03 |
0.035 |
0.035 |
0.035 |
|
Sulfur |
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|
Kev Ntsuas Kub |
0.03 |
0.03 |
0.035 |
0.035 |
0.035 |
|
Kev tshuaj xyuas khoom |
0.03 |
0.03 |
0.035 |
0.035 |
0.035 |
|
Silicon |
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|
Kev Ntsuas Kub |
0.5 max |
1.0 max |
0.5 – 0.80 |
0.15 – 0.4 |
0.5 max |
|
Kev tshuaj xyuas khoom |
0.55 max |
1.05 max |
0.44 – 0.86 |
0.13 – 0.45 |
0.5 max |
|
Chromium |
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|
Kev Ntsuas Kub |
4.00 – 6.00 |
8.0 – 10.0 |
1.0 – 1.5 |
0.8 – 1.15 |
2.0 – 2.5 |
|
Kev tshuaj xyuas khoom |
3.9 – 6.1 |
7.9 – 10.1 |
0.94 – 1.56 |
0.74 – 1.21 |
1.88 – 2.62 |
|
Molybdenum |
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|
Kev Ntsuas Kub |
0.45 – 0.65 |
0.9 – 1.1 |
0.45 – 0.65 |
0.45 – 0.6 |
0.9 – 1.1 |
|
Kev tshuaj xyuas khoom |
0.40 – 0.7 |
0.85 1.15 |
0.40 – 0.7 |
0.4 – 0.65 |
0.85 – 1.15 |
A387 qib 11 yog dab tsi?
ASTM A387 specification yog tus qauv Specification rau Pressure Vessel Phaj, Alloy Steel, Chromium-Molybdenum npaj rau siv nyob rau hauv welded boilers thiab siab hlab ntsha tsim rau siab kub kev pab cuam. SSAB tuaj yeem muab A387 Qib 11 rau qhov kev xeem nruj rau Chav Kawm 1 thiab / lossis Chav Kawm 2.
Dab tsi yog qhov muaj pes tsawg leeg ntawm A387 steel?
Muaj pes tsawg leeg: ASTM A387 steel phaj feem ntau muaj chromium (txog 9% lossis ntau dua) thiab molybdenum (txog 2.25% lossis ntau dua), uas txhim kho lawv lub zog thiab corrosion kuj ntawm qhov kub thiab txias.
Qhov txawv ntawm A182 thiab A387 yog dab tsi?
Ob leeg ASTM A182 qib F11 chav kawm 2 thiab ASTM A387 qib 22 steel yog hlau alloys. Lawv muaj 99% siab heev ntawm lawv qhov nruab nrab alloy muaj pes tsawg leeg. Muaj 32 cov khoom siv nrog cov txiaj ntsig rau ob qho khoom siv. Cov khoom muaj txiaj ntsig rau ib qho khoom siv xwb (1, hauv qhov no) tsis qhia.
ASTM A387 Qib 11 sib npaug li cas?
ASTM A387 qib 11 sib npaug steel yog ASME SA387 qib 11. ASTM A387 qib 11 npog A387 qib 11 chav kawm 1 thiab A387 qib 11 chav kawm 2, uas sib npaug rau ASME SA387 qib 18 qib 71 thiab qib 12 raws.
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.
