ASTM A533 Qib B thiab Qib D yog qis- alloy, siab hlab ntsha zoo (PVQ) steels, feem ntau sib txawv los ntawm lawv cov alloying ntsiab (tshwj xeeb yog Nickel rau B vs. Molybdenum rau D) thiab cov khoom siv kho tshuab, nrog Qib D feem ntau muab lub zog siab dua (feem ntau yuav tsum tau quenching & Tempering) thiab cov kev thov siab tshaj plaws yog {3} kev siv nuclear kev xaiv rau cov hlab ntsha dav dav tab sis kuj siv rau hauv nuclear sectors nrog rau cov chav kawm txawv txawv. Ob qib tuaj hauv cov chav kawm (piv txwv li, Chav Kawm 1, 2, 3) uas qhia ntxiv txog lawv cov kev kho cua sov thiab qib zog.
Tshuaj muaj pes tsawg leeg ntawm ASTM A533 Qib B
|
Qib |
C % |
Mn %(<40mm) |
P% |
S% |
Si% |
Mo% |
Ni% |
|
A533 HOM B |
0.25 |
1.07-1.82 |
0.035 |
0.035 |
0.13-0.45 |
0.41-0.84 |
0.37-0.73 |
Tshuaj muaj pes tsawg leeg ntawm ASTM A533 Qib C
|
Qib |
C % |
Mn %(<40mm) |
P% |
S% |
Si% |
Mo% |
Ni% |
|
A533 HOM C |
0.25 |
1.07-1.82 |
0.035 |
0.035 |
0.13-0.45 |
0.41-0.84 |
0.67-1.03 |
Mechanical Property Ntawm ASTM A533 Qib B
|
Qib |
Min Yield |
Tensile |
Thickness |
Elongation |
|
A533 HOM C |
345mpa ua |
550-690 Mpa |
<50MM |
18% |
Mechanical Property Ntawm ASTM A533 Qib C
|
Qib |
Min Yield |
Tensile |
Thickness |
Elongation |
|
A533 HOM B |
485mpa ua |
620-795 Mpa |
<50MM |
16% |
ASTM A533 Qib B
Hom: Carbon-manganese-nickel alloy hlau.
Key Alloying: Muaj Nickel (Ni) rau kev txhim kho toughness.
Cov Chav Kawm: Chav Kawm 1 (normalized) thiab Chav Kawm 2 (quenched & tempered) muaj ntau, nrog Chav Kawm 2 muaj zog dua.
Siv: dav siv hauv boilers thiab cov hlab ntsha siab, nrog rau cov khoom siv hluav taws xob nuclear.
ASTM A533 Qib D
Hom: Manganese-molybdenum (Mn-Mo) alloy hlau.
Key Alloying: Muaj Molybdenum (Mo) rau lub zog.
Cov Chav Kawm: Chav Kawm 3 yog qhov sib txawv tseem ceeb, feem ntau xav tau quenching thiab tempering rau cov khoom txhim kho.
Siv: Haum rau siab - daim ntawv thov muaj zog, feem ntau ua ke nrog Molybdenum rau lub zog thiab nkag mus.
Qhov Tseem Ceeb Qhov Sib Txawv Zoo Tshaj
Alloying: Qib B ntxiv Nickel; Qib D ntxiv Molybdenum, hloov nws cov lus teb metallurgical.
Lub zog: Qib D, tshwj xeeb yog Chav Kawm 3, feem ntau muaj cov txiaj ntsig qis dua thiab lub zog tensile, feem ntau ua tiav los ntawm quenching thiab tempering.
Daim Ntawv Thov: Qib B yog ib txwm muaj, tab sis Qib D (nrog rau nws qhov tshwj xeeb alloying) lub hom phiaj kev ua tau zoo dua, tshwj xeeb tshaj yog qhov uas Molybdenum cov khoom muaj txiaj ntsig zoo rau siab - kub lossis kev pabcuam tshwj xeeb.
