A203 GR.D steel phaj yog ib qho qis-nickel alloy steel, uas belongs rau ultra-tsawg kub thawv phaj. Nws muab faib ua tsib qib, suav nrog A, B, D, E, F, ntawm cov nominal nickel ntsiab lus ntawm D, E, F qib ntawm steel phaj yog 3.5%, feem ntau hu ua 3.5Ni steel.A203 GR.D steel phaj muaj kev cuam tshuam zoo heev thiab cov khoom siv kho tshuab nyob rau hauv qhov kub thiab txias, feem ntau yog siv nyob rau hauv qhov kub thiab txias ib puag ncig ntawm -70 degree ~ -101 degree (tempered xeev tuaj yeem mus txog -107 degree ). Nws yog tsuas yog siv rau hauv kev tsim cov CO2 nqus ntauwd, H2S nqus ntauwd, methanol scrubbing ntauwd thiab lwm yam khoom siv hauv kev lag luam ntawm kev sib sib zog nqus txias sib cais, huab cua sib cais, liquefied roj av cia, thiab thee chemical kev lag luam.
Chemical Composition (%):
|
Qib / Khoom siv |
Lub ntsiab |
Composition (Max-A, Min-I) |
|
A203 Qib D / A203 GrD |
C |
A:0.17 |
|
Mn |
A:0.70 |
|
|
Si |
0.15-0.40 |
|
|
P |
0.035 |
|
|
S |
0.035 |
Mechanical Properties (Mpa):
|
Qib / Khoom siv |
Tensile Test |
Ksi/MPa |
|
A203 Qib D / A203 GrD |
Tensile zog |
65-85/450-585 |
|
Yield zog |
I:37/255 |
|
|
Elongation |
19% |
|
|
Impact Test (yog tias muaj) |
|
