ASTM A633 Qib C thiab Qib D yog ob qho tib si, siab - lub zog, qis- alloy (HSLA) cov qauv steel phaj tsim los rau qis- kub toughness, tab sis Qib D muaj zog dua, nrog tsawg kawg yog 50 ksi (345 MPa) yield rau thinner2 phaj siab dua me ntsis. thaum Qib C kuj tseem muaj 50 ksi tawm los tab sis muaj qis zog tensile specs thiab cov ntsiab lus sib txawv me ntsis, ob qho tib si siv hauv kev tsim kho hnyav, kev tsim tawm sab nrauv, thiab cov khoom siv uas ua haujlwm tau zoo nyob rau hauv txias txias yog qhov tseem ceeb.
Tseem Ceeb Similarities & Differences
Zoo sib xws:Ob leeg yog rau kev thov, qis -temp daim ntaub ntawv (xws li offshore platforms, hnyav machinery) xav tau zoo toughness.
Qhov txawv:Qib D feem ntau muaj zog dua me ntsis (tensile), ua rau nws zoo dua rau qee qhov siab dua - cov ntawv thov kev ntxhov siab piv rau Qib C, txawm hais tias ob leeg sib koom qhov tsawg kawg nkaus lub zog ntawm cov tuab tuab.
Tshuaj muaj pes tsawg leeg % ntawm cov khoom tsom xam ntawm qib A633 Qib C
|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
0.20 |
0.15-0.50 |
1.15-1.50 |
0.035 |
0.04 |
|
|
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
|
|
|
0.01-0.05 |
|
|
|
Mechanical zog ntawm qib A633 Qib C
|
Kub |
-35 |
-20 |
0 |
25 |
|
Notch Impact Test. Min. absorbed zog J |
41 |
54 |
61 |
68 |
|
Nominal thickness (hli) |
rau 65 |
65 - 100 |
100 - 150 |
|
ReH - Yam tsawg kawg nkaus tawm lub zog (MPa) |
345 |
315 |
|
|
Nominal thickness (hli) |
rau 65 |
65- 100 |
100-150 |
|
Rm -Tensile zog (MPa) |
485-620 |
450-590 |
|
|
Ntsuas Length (mm) |
200 |
50 |
|
A - Yam tsawg kawg elongation Lo=5,65 √ Li ntawd (%) Longitudinal |
18 |
23 |
Tshuaj muaj pes tsawg leeg % ntawm cov khoom tsom xam ntawm qib A633 Qib D
|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
0.20 |
0.15-0.50 |
0.70-1.35 |
0.035 |
0.04 |
|
|
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
0.25 |
0.35 |
0.08 |
|
O.25 |
|
|
Mechanical zog ntawm qib A633 Qib D
|
Kub |
-35 |
-20 |
0 |
25 |
|
Notch Impact Test. Min. absorbed zog J |
41 |
54 |
61 |
68 |
|
Nominal thickness (hli) |
rau 65 |
65 - 100 |
100 - 150 |
|
ReH - Yam tsawg kawg nkaus tawm lub zog (MPa) |
345 |
315 |
|
|
Nominal thickness (hli) |
rau 65 |
65- 100 |
100-150 |
|
Rm -Tensile zog (MPa) |
485-620 |
450-590 |
|
|
Ntsuas Length (mm) |
200 |
50 |
|
A - Yam tsawg kawg elongation Lo=5,65 √ Li ntawd (%) Longitudinal |
18 |
23 |
