ʻO nā papa 321 a me 347 ke kila austenitic 18/8 kumu (Grade 304) i hoʻopaʻa ʻia e Titanium (321) a i ʻole Niobium (347).Hoʻohana ʻia kēia mau māka no ka mea ʻaʻole lākou e maʻalahi i ka corrosion intergranular ma hope o ka hoʻomehana ʻana i loko o ka carbide precipitation range o 425-850 °C.ʻO ka papa 321 ka papa koho no nā noi ma ke ʻano wela a hiki i ka 900 °C, e hui pū ana i ka ikaika kiʻekiʻe, ke kūpaʻa ʻana i ka scaling a me ka paʻa o ka pae me ke kūpaʻa ʻana i ka wai aqueous corrosion.
Ke kila kila – Papa 321 (UNS S32100)
ʻO ka papa 321H kahi hoʻololi o 321 me ka ʻike kalapona kiʻekiʻe, e hāʻawi i ka ikaika o ka wela kiʻekiʻe.
ʻO kahi palena me 321 ʻaʻole e neʻe maikaʻi ka titanium ma waena o kahi arc wela kiʻekiʻe, no laila ʻaʻole ia e ʻōlelo ʻia ma ke ʻano he mea hoʻohana wili.I kēia hihia, ʻoi aku ka maikaʻi o ka papa 347 - hana ka niobium i ka hana hoʻopaʻa carbide hoʻokahi akā hiki ke hoʻololi ʻia ma waena o kahi arc wili.No laila, ʻo ka papa 347 ka mea hoʻohana maʻamau no ke kuʻi ʻana i ka 321. Hoʻohana ʻia ka papa 347 i kekahi manawa ma ke ʻano he papa papa makua.
E like me nā māka austenitic ʻē aʻe, ʻo 321 a me 347 ka maikaʻi o ka hoʻokumu ʻana a me nā hiʻohiʻona wiliwili, hiki ke wāwahi a ʻōwili ʻia a loaʻa nā hiʻohiʻona wili maikaʻi.ʻAʻole koi ʻia ka annealing post-weld.Loaʻa iā lākou ka paʻakikī maikaʻi loa, a hiki i nā mahana cryogenic.ʻAʻole maikaʻi ka papa 321, no laila ʻaʻole ʻōlelo ʻia no nā noi hoʻonaninani.
Ke kila kila – Papa 321 (UNS S32100)
ʻOi aku ka maʻalahi o ka papa 304L i ka hapa nui o nā ʻano huahana, a no laila e hoʻohana maʻamau ʻia i ka makemake i ka 321 inā pono ke koi no ke kūʻē ʻana i ka corrosion intergranular ma hope o ka wili.Eia nō naʻe, ʻoi aku ka ikaika wela o 304L ma mua o 321 a no laila ʻaʻole ia ke koho maikaʻi loa inā kūʻē ke koi i kahi kaiapuni hana ma kahi o 500 °C.
Na Waiwai Ki
Ua kuhikuhi ʻia kēia mau waiwai no nā huahana ʻōwili palahalaha (pālaʻi, pepa, a me ka coil) ma ASTM A240/A240M.Ua kuhikuhi ʻia nā waiwai like akā ʻaʻole like no nā huahana ʻē aʻe e like me ka paipu a me ka bar i kā lākou kikoʻī.
Huina
Ke kila kila – Papa 321 (UNS S32100)
Hāʻawi ʻia nā pae haku mele maʻamau no ka papa 321 ʻili kila ma ka papa 1.
Papa 1.Nā papa hana no ke kila kila kila 321
Papa | C | Mn | Si | P | S | Cr | Mo | Ni | N | 'ē aʻe | |
---|---|---|---|---|---|---|---|---|---|---|---|
321 | min. max | - 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 12.0 | 0.10 | Ti=5(C+N) 0.70 |
321H | min. max | 0.04 0.10 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 12.0 | - | Ti=4(C+N) 0.70 |
347 | min. max | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 13.0 | - | Nb=10(C+N) 1.0 |
Na Waiwai Mechanical
Hāʻawi ʻia nā ʻano mekini maʻamau no ka papa 321 ʻili kila ma ka papa 2.
Papa 2.Mechanical waiwai o 321-grade kuhiliʻole kila
Papa | Ka U'i (MPa) min | ʻO ka ikaika 0.2% Hōʻoia (MPa) min | Elongation (% i 50 mm) min | ʻoʻoleʻa | |
---|---|---|---|---|---|
ʻO Rockwell B (HR B) max | Brinell (HB) max | ||||
321 | 515 | 205 | 40 | 95 | 217 |
321H | 515 | 205 | 40 | 95 | 217 |
347 | 515 | 205 | 40 | 92 | 201 |
Na Waiwai Kino
Hāʻawi ʻia nā waiwai kino maʻamau no ka papa annealed grade 321 o ke kila kila ma ka papa 3.
Papa 3.Nā waiwai kino o 321-grade stainless steel ma ke kūlana annealed
Papa | Māmā (kg/m3) | Modulus Elastic (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | ʻO ka hoʻoili wela (W/mK) | Wela Kūikawā 0-100 °C (J/kg.K) | Palekana Uila (nΩ.m) | |||
---|---|---|---|---|---|---|---|---|---|
0-100 °C | 0-315 °C | 0-538 °C | ma 100 °C | ma 500 °C | |||||
321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
Hoʻohālikelike Hoʻohālikelike Papa
Hāʻawi ʻia nā hoʻohālikelike papa ma kahi o 321 ma ka pākaukau 4.
Papa 4.Nā kikoʻī kikoʻī no ke kila kila 321-grade
Papa | UNS No | Pelekania kahiko | Euronorm | Kuekene SS | Kepani JIS | ||
---|---|---|---|---|---|---|---|
BS | En | No | inoa | ||||
321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
321H | S32109 | 321S51 | - | 1.4878 | X10CrNiTi18-10 | - | SUS 321H |
347 | S34700 | 347S31 | 58G | 1.4550 | X6CrNiNb18-10 | 2338 | SUS 347 |
Ka manawa hoʻouna: Mar-10-2023