He kila kila austenitic ʻo Tp347 i hoʻopaʻa ʻia me ke kolumbium. ʻO ka hoʻohui ʻana o ke kolumbium e hana ai i kēia papa kila kila i ka hana kūpono ma ke kūlana oxidation kiʻekiʻe ma lalo o nā mahana kiʻekiʻe ma kahi o 800 degere Celsius
ʻO TP347H (UNS S3409) ke kila kila o TP347 me kahi ʻoi aku ka nui o ke kalapona (0.04 - 0.10)
He kūpaʻa maikaʻi ko 347H i ka pala intergranular, a he kūpaʻa maikaʻi hoʻi i ka pala i ka alkali, ka wai kai a me nā ʻano hopena waikawa like ʻole. Ma muli o kona kūpaʻa wela maikaʻi a me ke kūpaʻa oxidation, hiki iā ia ke kū i nā ukana liʻiliʻi ma nā mahana ma lalo o 850 degere.
Papa Paipu:TP347, AISI 347, EN 1.4550, UNS S34700
ʻAno Paipu:ʻAʻohe pono
ʻAno o ka Tube:Pololei, U Bend, ʻoki ʻia i ka lōʻihi
Hoʻopau ʻili:Hoʻoheheʻe ʻia ka hopena a me ka pickled (AP), ʻĀlohilohi ʻia ka Annealed (BA), Polished