347 Paʻa Paʻa Paʻa

UNS S34700 (Papa 347)

ʻO 347 pahu kila kila, ʻike ʻia hoʻi ʻo UNS S34700 a me ka Papa 347, he austenitic stainless steel i hana ʻia me .08% kalapona kiʻekiʻe, 17% a 19% chromium, 2% manganese kiʻekiʻe, 9% a 13% nickel, 1% silika kiʻekiʻe. , nā ʻāpana o ka phosphorus a me ka sulfur, 1% ka liʻiliʻi i ka 10% ka nui o ka columbium a me ka tantalum me ke koena o ka hao. ʻOi aku ka maikaʻi o ka papa 347 no ka lawelawe wela kiʻekiʻe ma muli o kona mau pono mīkini maikaʻi; He kūʻē maikaʻi loa ia i ka corrosion intergranular ma hope o ka ʻike ʻana i nā mahana ma ka chromium carbide precipitation range mai 800 ° a 1500 ° F. Ua like ia me ka Papa 321 e pili ana i ka corrosion intergranular i loaʻa ma o ka hoʻohana ʻana i ka columbium ma ke ʻano he stabilizing element e hoʻonui i kēia hiʻohiʻona. ʻAʻole hiki ke hoʻopaʻakikī ʻia ka papa 347 ma o ka mālama ʻana i ka wela, akā hiki ke loaʻa nā waiwai kiʻekiʻe ma o ka hōʻemi ʻana i ke anu.

ʻO nā ʻoihana e hoʻohana ana i ka 347:

• Aerospace
• Vale

ʻO nā huahana i kūkulu ʻia a ʻāpana paha o 347:

• Nā apo ohi mokulele
• Mea hana kemika
• ʻāpana ʻenekini
• ʻO nā pahu hoʻopau
• ʻO nā gaskets wela kiʻekiʻe a me nā hui hoʻonui
• ʻāpana ʻenekini pōhaku