ASTM A203 Qib A thiab B yog npib tsib xee alloy steels rau cov hlab ntsha siab, sib txawv hauv cov ntsiab lus nickel, uas cuam tshuam cov khoom: Qib B muaj ntau dua npib tsib xee (kwv yees li 2.25%) kom zoo dua qis-temp toughness, ua rau nws muaj ntau rau boilers / roj / roj, thaum Qib A muaj tsawg nickel, muab ob qho tib si haum rau kev siv zog, qis zog thiab kev thov. thiab cuam tshuam lub zog nyob rau hauv ntau yam.
Kev Siv Tshuab Ntxiv: HIC Test|NACE MR0175|Z15|Z25|Z35|S1|S2|S3|S4.1
S5 | S6 | S7 | S8 | S9| S11 | S12 | S14 | S17
Thickness: 6mm-300mm,
Dav: 1500mm txog 4050mm,
Ntev: 3000mm txog 15000mm
ASTM A202 Qib B
| Qib | Chemical Composition (%) | ||||
| C | Mn Ntau dua lossis sib npaug | Si | P | S | |
| A202 Qib B (A202GRB) | 0.25 | 0.97-1.52 | 0.54-0.96 | 0.035 | 0.035 |
| Qib | Mechanical Property | ||||
| Tensile zog (MPa) | Yield zog (MPa) | % Elongation hauv 2 nti (50mm) min | Impacting Test Temperature (degree) | ||
| A202 Grade B (A202GRB)> | 585-760 | 325 | 18 | -20,40,-60 | |
ASTM A202 Qib A
| Qib | Chemical Composition (%) | ||||
| C | Mn Ntau dua lossis sib npaug | Si | P | S | |
| A202 Qib A (A202GRA) | 0.17 | 0.97-1.52 | 0.54-0.96 | 0.035 | 0.035 |
| Qib | Mechanical Property | ||||
| Tensile zog (MPa) | Yield zog (MPa) | % Elongation hauv 2 nti (50mm) min | Impacting Test Temperature (degree) | ||
| A202 Grade A (A202GRA)> | 515-655 | 310 | 19 | -20,40,-60 | |
Qhov txawv tseem ceeb
Cov ntsiab lus Nickel: Qhov no yog thawj qhov sib txawv.
A203 Qib B: Muaj txog 2.25% Nickel.
A203 Qib A: Muaj cov ntsiab lus nickel qis (feem ntau nyob ib puag ncig 0.40-0.70% lossis 0.40-1.00%, nyob ntawm tus qauv qauv, tab sis tsawg dua B).
Mechanical Properties (Ib puag ncig Toughness):
Qib B: Cov npib tsib xee ntxiv tau zoo txhim kho qis - qhov kub thiab txias, ua rau nws zoo dua rau cov khoom siv cryogenic lossis txias - cov hlab ntsha siab.
Qib A: Muab cov ductility zoo thiab weldability tab sis tsis tshua muaj kev txhim kho qis -kub kev ua tau zoo dua qib B.
Daim ntawv thov:
Qib B: Dav siv dav hauv siab - cov hlab ntsha siab, boilers, thiab cov khoom siv roj / roj qhov chaw kub hloov pauv lossis qis - qhov kev pabcuam kub xav tau.
Qib A: Siv nyob rau hauv cov kev pab cuam tsawg dua qhov uas qis zog thiab ductility tau txais.
