ASTM A203 Qib A thiab Qib B yog npib tsib xee- alloy hlau daim hlau rau welded siab hlab ntsha, sib txawv hauv lawv cov ntsiab lus npib tsib xee thiab cov khoom siv kho tshuab, nrog Qib B muab cov txiaj ntsig qis dua siab dua (ib puag ncig 275 MPa) piv rau Qib A (ib puag ncig 255 MPa), ua Qib B tsim nyog rau ob qho tib si kev xav tau ntau dua% qis- kev pabcuam kub, txawm hais tias qee cov chemistry thiab kev kho cua sov txawv me ntsis los ntawm cov chaw tsim khoom.
Cov cuab yeej cuab tam rau A203 Qib B steel phaj
|
Mechanical Property ntawm A203 Qib A steel phaj |
A203 Qib A |
|
Tensile zog, kis [MPa] |
65-85 [450-585] |
|
Yield zog, min, kis [MPa] |
37 [255] |
|
Elongation hauv 8 nti [200 mm], min, % |
15 |
|
Elongation hauv 2 nti [50 mm], min, % |
19 |
Cov cuab yeej cuab tam rau A203 Qib B steel phaj
|
Mechanical Property ntawm A203 Qib B steel phaj |
A203 Qib B |
|
Tensile zog, kis [MPa] |
70-90[485-620] |
|
Yield zog, min, kis [MPa] |
40 [275] |
|
Elongation hauv 8 nti [200 mm], min, % |
17 |
|
Elongation hauv 2 nti [50 mm], min, % |
21 |
Tshuaj muaj pes tsawg leeg rau A203 Qib A steel phaj
|
Qib |
Cov ntsiab lus Max (%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
A203 Qib A |
0.17 |
0.13-0.45 |
0.78-0.88 |
0.035 |
0.035 |
Tshuaj muaj pes tsawg leeg rau A203 Qib B steel phaj
|
Qib |
Cov ntsiab lus Max (%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
A203 Qib B |
0.17 |
0.13-0.45 |
0.78-0.88 |
0.035 |
0.035 |
Qhov tseem ceeb sib txawv & Zoo sib xws
Cov Khoom Siv: Ob leeg yog npib tsib xee- alloy steels (2% nickel steels) teev los ntawm ASTM rau cov hlab ntsha siab.
Daim ntawv thov: Siv rau hauv cov roj, roj, tshuaj, thiab fais fab kev lag luam rau reactors, tshav kub exchangers, thiab cia tanks.
Lub zog: Qib B muaj qhov tsawg kawg nkaus tawm lub zog thiab lub zog tensile dua qib A.
Cov ntsiab lus nickel: feem ntau nyob ib ncig ntawm 2.0% mus rau 3.0% npib tsib xee, haum rau qis-kub toughness.
Kev kho cua sov: Feem ntau xav tau normalization kom tau raws li cov khoom siv kho tshuab.
ASTM A203 Qib A: Lub zog qis dua, siv tau rau qhov xav tau tsawg dua cov hlab ntsha.
ASTM A203 Qib B: Lub zog siab dua (min yield ~ 275 MPa), ua rau ntau dua rau cov hlab ntsha siab dua / kub.
