SA203GrD ultra-low kub siab lub nkoj phaj

SA203GrD steel phaj belongs rau ultra-low kub thawv phaj, SA203 yog A tsis tshua muaj npib tsib xee alloy hlau, suav nrog A, B, D, E, F tsib qib. Cov ntsiab lus nickel nominal ntawm D, E thiab F yog 3.5%, feem ntau hu ua 3.5Ni steel. SA203D/E/F muaj kev cuam tshuam zoo toughness thiab mechanical zog nyob rau hauv qis kub tej yam kev mob, thiab feem ntau yog siv nyob rau hauv qis kub ib puag ncig ntawm -70 ~ -101 degree (lub xeev tempered yuav ncav cuag -107 degree ).

SA203GrD steel phaj belongs rau ultra-tsawg kub thawv phaj, SA203 yog ib tug tsawg npib tsib xee alloy hlau, feem ntau hu ua 3.5Ni hlau. Siv dav hauv cov hlab ntsha siab, cov khoom siv hluav taws xob, cov khoom siv petrochemical, ntauwd, petrochemical thiab lwm yam

Cov tshuaj muaj pes tsawg leeg ntawm SA{{0}}GR.D steel phaj suav nrog carbon, silicon, manganese, phosphorus, sulfur, npib tsib xee, tooj liab, chromium thiab molybdenum. Tshwj xeeb, nws muaj tsis ntau tshaj 0.23% carbon, nruab nrab ntawm 0.13% thiab 0.45% silicon, tsis ntau tshaj 0.88% manganese, tsis ntau tshaj 0.025% phosphorus, tsis ntau tshaj 0.025% sulfur, nruab nrab ntawm 3.18% thiab 3.82% nickel, txog 1% tooj liab, txog 1% chromium, thiab txog 0.2% molybdenum.

Alloying element carbon cov ntsiab lus (C): 0.15% Max

Alloying element silicon cov ntsiab lus (Si): 0.40% Max

Alloying element manganese cov ntsiab lus (Mn): 0 70-0.80%

Alloying element phosphorus cov ntsiab lus (P): 0.035% siab tshaj

Alloying element sulfur ntsiab lus (S): 0.035% Max

Cov ntsiab lus nickel (Ni): 3.25-3.75%

Alloying element tooj liab cov ntsiab lus (Cu): 0.25% siab tshaj

Cov ntsiab lus chromium alloy (Cr): 0 80-1.10%

Cov ntsiab lus molybdenum (Mo): 0 45-0.60%