Hauv kev lag luam kev lag luam hnyav, muaj ntau tus lej thiab hom steel phaj siv. Tsis ntev los no, qee cov phooj ywg xav paub txog cov hlau phaj nrog lub zog siab, siab tawv, kev cuam tshuam tsis kam, hnav tsis kam, corrosion kuj, av qeeg thiab lwm yam khoom hauv kev tsim choj.
SM490 steel phaj yog Japanese tus qauv qis- alloy siab- lub zog steel uas siv cov txheej txheem tshwj xeeb ntawm Japanese tus qauv JISG3106. Tus SM hauv SM490 qauv txhais tau hais tias tus qauv Japanese siab -lub zog version, thiab 490 sawv cev rau lub zog ntawm cov hlau phaj.
SM490 steel daim hlau yog qhov qub lossis kub dov thaum xa khoom, thiab tuaj yeem nthuav tawm hauv ntau lub xeev raws li kev thov.
Nyob ntawm lub hom phiaj, Z15 / Z25 / Z35 lamellar tear resistance test tuaj yeem ua tau los xyuas qhov ductility thiab toughness ntawm steel phaj nyob rau hauv cov thickness kev taw qhia. Kev xeem thawj, thib ob, thiab thib peb kuj tuaj yeem ua raws li qhov yuav tsum tau ua thaum xa khoom.
SM490 steel phaj muaj cov yam ntxwv ntawm lub zog siab, siab tawv, qaug zog tsis kam, cuam tshuam tsis kam, hnav tsis kam, corrosion kuj, tiv thaiv -seismic vuam, thiab ua haujlwm yooj yim. Nws feem ntau yog siv rau hauv cov tsev, txuas hniav, nkoj, tsheb ciav hlau, roj av cia tank, ntim thiab lwm yam kev tsim kho uas yuav tsum tau ua kom zoo tshaj weldability.
Chemical Compositions thiab Mechanical Properties
Qib |
Thickness (mm) |
Tshuaj muaj pes tsawg leeg% | Mechanical Properties | ||||||||||||||
Tensile Test |
Impact Test | ||||||||||||||||
Yield Point N/mm² |
Tensile zog N / mm² | Elongation |
Kuaj Temp (degree) | Charpy Absorbed Zog Nruab Nrab (Joule) | Kuaj daim | ||||||||||||
C (max) |
Si (max) |
Mn |
P (max) |
S (max) | Thickness (hli) |
Thickness (mm) |
Kuaj Daim |
% (min) | |||||||||
t Tsawg dua lossis sib npaug li 16 | 16＜t Tsawg dua los yog sib npaug li 40 | 40＜t Tsawg dua los yog sib npaug li 75 | 75＜t Tsawg dua los yog sib npaug li 90 | ||||||||||||||
SWB 490A | t Tsawg dua lossis sib npaug li 50 | 0.20 |
0.55 | 1.65 max |
0.035 |
0.035 |
325 nqi |
315 min |
295 nqi |
295 nqi |
490~610 |
6 Tsawg dua lossis sib npaug t Tsawg dua lossis sib npaug rau 16 16＜t Tsawg dua lossis sib npaug li 50 40＜t |
No.1A No.1A No.4 |
17 21 23 |
─ |
─ | |
50＜t Tsawg dua lossis sib npaug rau 90 | 0.22 | ||||||||||||||||
SWB 490B | t Tsawg dua lossis sib npaug li 50 | 0.18 |
0.55 |
1.65 max |
0 |
27 feeb | |||||||||||
50＜t Tsawg dua lossis sib npaug rau 65 | 0.20 | ||||||||||||||||
SWB 490C | t Tsawg dua lossis sib npaug li 50 | 0.18 | 0.55 | 1.65 max | 0 | 47 feeb | |||||||||||
SM490 YA |
t Tsawg dua lossis sib npaug li 50 |
0.20 |
0.55 |
1.65 max |
0.035 |
0.035 |
365 nqi |
355 nqi |
335 nqi |
325 nqi |
490~610 | 6 Tsawg dua lossis sib npaug t Tsawg dua lossis sib npaug rau 16 16＜t Tsawg dua lossis sib npaug li 50 40＜t | No.1A No.1A No.4 | 15 19 21 | ─ | ─ | |
SM490 YB | 0 | 27 feeb | |||||||||||||||
