Magiredhi 321 uye 347 ndiwo ekutanga austenitic 18/8 simbi (Giredhi 304) yakasimbiswa neTitanium (321) kana Niobium (347) yekuwedzera.Aya magiredhi anoshandiswa nekuti haanzwe kune intergranular corrosion mushure mekupisa mukati mecarbide kunaya kwe425-850 °C.Giredhi 321 ndiro giredhi resarudzo rekushandisa mutembiricha yemhando inosvika 900 °C, kubatanidza simba repamusoro, kuramba kuyera uye kugadzikana kwechikamu nekupokana nekuzotevera kusvibiswa kwemvura.
Stainless Simbi – Giredhi 321 (UNS S32100)
Giredhi 321H igadziriso ye321 ine yakakwira kabhoni yemukati, kuti ipe yakavandudzwa-yepamusoro-tembiricha simba.
Muganho une 321 ndeyekuti titanium haifambise zvakanaka kune yakakwirira-tembiricha arc, saka haikurudzirwe sewelding inodyiwa.Muchiitiko ichi giredhi 347 inosarudzwa - iyo niobium inoita zvakafanana carbide kudzikamisa basa asi inogona kutamiswa kune welding arc.Giredhi 347, saka, ndiyo yakajairwa kushandiswa kwewelding 321. Giredhi 347 rinongoshandiswa apo neapo sezvinhu zvembare yevabereki.
Kufanana nemamwe magiredhi eaustenitic, 321 uye 347 vane hunhu hwakanaka hwekugadzira uye welding, ari nyore mabhureki kana roll-akaumbwa uye ane akatanhamara welding hunhu.Post-weld annealing haidiwi.Ivo zvakare vane kusimba kwakanyanya, kunyangwe kusvika kune tembiricha ye cryogenic.Giredhi 321 harina kukwenenzvera zvakanaka, saka harikurudzirwe pakushongedza kwekushandisa.
Stainless Simbi – Giredhi 321 (UNS S32100)
Giredhi 304L rinowanikwa zviri nyore mumhando dzakawanda dzechigadzirwa, uye saka rinowanzo shandiswa pachinzvimbo che321 kana chinodiwa chiri chekungoramba kune intergranular corrosion mushure mewelding.Nekudaro, 304L ine yakaderera inopisa simba pane 321 uye saka haisi iyo yakanakisa sarudzo kana chinodiwa chiri kuramba kune inoshanda nharaunda pamusoro pe500 °C.
Key Properties
Izvi zvivakwa zvakatarirwa zvigadzirwa zvakatenderedzwa (plate, sheet, uye coil) muASTM A240/A240M.Zvakafanana asi zvisingaite zvakafanana zvivakwa zvinotsanangurwa kune zvimwe zvigadzirwa senge pombi uye bhara mune yavo yakatarwa.
Composition
Stainless Simbi – Giredhi 321 (UNS S32100)
Mashizha esimbi asina tsvina egiredhi 321 anopihwa mutafura 1.
Tafura 1.Maumbirwo emhando ye321-giredhi Stainless simbi
| Giredhi | C | Mn | Si | P | S | Cr | Mo | Ni | N | Zvimwe | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
Mechanical Properties
Yakajairika mechanicha zvivakwa zvegiredhi 321 Stainless sheets esimbi inopihwa mutafura 2.
Tafura 2.Mechanical zvimiro zve 321-giredhi Stainless simbi
| Giredhi | Tensile Simba (MPa) min | Goho Simba 0.2% Uchapupu (MPa) min | Elongation (% mu50 mm) min | Kuoma | |
|---|---|---|---|---|---|
| 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 |
Zvinhu Zvenyama
Zvakajairwa zvimiro zveannealed giredhi 321 Stainless sheets esimbi anopihwa mutafura 3.
Tafura 3.Zvenyama zvimiro zve321-giredhi Stainless simbi mune annealed mamiriro
| Giredhi | Density (kg/m3) | Elastic Modulus (GPa) | Kureva Coefficient yeKuwedzera Kwekupisa (μm/m/°C) | Thermal Conductivity (W/mK) | Chaicho Kupisa 0-100 °C (J/kg.K) | Kuramba Kwemagetsi (nΩ.m) | |||
|---|---|---|---|---|---|---|---|---|---|
| 0-100 °C | 0-315 °C | 0-538 °C | pa100 °C | pa500 °C | |||||
| 321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
Giredhi Specification Kuenzanisa
Kuenzanisa kwegiredhi kuenzaniswa kwe321 Stainless sheets esimbi kunopihwa mutafura 4.
Tafura 4.Magiredhi ekutsanangurwa kwe321-giredhi Stainless simbi
| Giredhi | UNS Nha | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | Zita | ||||
| 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 |
Nguva yekutumira: Mar-10-2023