2HGr42 thiab 2HGr50 yog qib siab - lub zog, qis- alloy (HSLA) cov qauv hlau phaj, feem ntau tau teev tseg los ntawm American Petroleum Institute (API) rau kev thov cov roj av thiab roj siv hauv ntug dej hiav txwv, xws li cov platforms thiab FPSOs, paub txog kev muaj zog zoo heev, muaj zog 50s, thiab weldability. (kwv yees 50 ksi yield) dua Qib 42 (nyob ib ncig ntawm 42 ksi tawm los), ob qho tib si feem ntau muab cov khoom siv rau cov khoom siv tseem ceeb.
Tshuaj muaj pes tsawg leeg
|
Qib |
C % |
Mn% |
P % |
S% |
Si% |
Nb |
Ti |
Al |
N |
V |
|
2 hg42 |
0.18 |
0.90-1.35 |
0.030 |
0.010 |
0.05-0.40 |
Tsawg dua los yog sib npaug li 0.04 |
Tsawg dua lossis sib npaug li 0.02 |
0.02-0.06 |
0.012 |
d |
|
Qib |
C % |
Mn% |
P % |
S% |
Si% |
Nb |
Ti |
Al |
N |
V |
|
2 HG50 |
0.18 |
0.15-1.60 |
0.030 |
0.010 |
0.05-0.40 |
0.01-0.04 |
Tsawg dua lossis sib npaug li 0.02 |
0.02-0.06 |
0.012 |
d |
Mechanical Property
|
Qib |
Yield zog, kis (Mpa) |
Tensile zog, kis |
Elongation |
|
2 hg42 |
t Tsawg dua los yog sib npaug rau 2.5in 42 (289) t Ntau dua los yog sib npaug rau 2.5in 42 (289) |
62-82(427-565) |
2 nti (50mm) 22 |
|
Qib |
Yield zog, kis (Mpa) |
Tensile zog, kis |
Elongation |
|
2 HG50 |
t Tsawg dua los yog sib npaug rau 2.5in 50 (345) t Ntau dua los yog sib npaug rau 2.5in 47 (324) |
70-90(483-620) |
2 nti (50mm) 21 |
Cov yam ntxwv tseem ceeb
Txuj: API Specification 2H.
Hom: Normalized, structural steel phaj.
Kev lag luam: Feem ntau offshore (roj & roj, marine).
Khoom: Lub zog muaj zog, zoo cuam tshuam toughness, superior weldability, corrosion kuj.
Kev Ua: Tswj dov lossis normalizing kom ua tiav cov khoom.
Qib sib piv
2HGr42: Lub zog nruab nrab (kwv yees . 42 ksi tawm los).
2HGr50: Lub zog siab dua (kwv yees . 50 ksi tawm los), ntau dua rau cov pob qij txha tseem ceeb hauv cov platforms.
Cov ntawv thov siv
Offshore roj drilling platforms.
Shipbuilding thiab hull kev tsim kho.
Platform yeeb nkab txuas thiab kev sib tshuam.
Crane puag thiab piling nyob rau hauv cov mob hnyav (hloov siv).
Ntsiab nta
Toughness: Qhov tseem ceeb rau kev tiv thaiv kev cuam tshuam los ntawm nthwv dej, cov hlab ntsha, thiab cov khoom hnyav, nrog Charpy V- qhov ntsuas qhov ntsuas tau ua tiav.
Los ntawm -Thickness Properties: Feem ntau teev nrog Z- kev ntsuas kev taw qhia (raws li ASTM A770) rau cov cheeb tsam hauv qab nruj.
