Buga 321 (UNS S32100) a cikin bututun Coil
Bayani
Nau'in 321 shine titanium stabilized chromium nickel austenitic bakin karfe tare da juriya mai lalata kama da 304/304L.Ana amfani da wannan darajar yawanci a cikin kewayon zafin jiki na 800-1500˚F inda aka daidaita shi da hazo na chromium carbide ta ƙara titanium, wanda ke haifar da hazo na titanium carbide.Nau'in 321 yana da kyakkyawan juriya na lalata intergranular bayan fallasa zuwa wannan kewayon zafin jiki, kuma wannan matakin yana tsayayya da iskar shaka har zuwa 1500˚F kuma yana da kaddarorin fashewa da damuwa fiye da 304/304L.Hakanan yana da ƙaƙƙarfan ƙaƙƙarfan zafin jiki kuma ba shi da maganadisu a cikin yanayin da ba a taɓa gani ba.
321 bakin karfe nada bututu
Haɗin Sinadari
Ƙimar Kemikal (wt%) kamar yadda aka ƙayyade a ASTM A240 da ASME SA240*.
| Abun ciki | 321 |
| Carbon | 0.08 |
| Chromium | 17.0-19.0 |
| Nickel | 9.0-12.0 |
| Manganese | 2.00 |
| Siliki | 0.75 |
| Nitrogen | 0.10 |
| Phosphorus | 0.045 |
| Sulfur | 0.030 |
| Titanium | 5(C+N) min / 0.70 max |
Kayayyakin Injini
Bukatun kadarorin injina don samfurin da aka soke kamar yadda aka ƙayyade a ASTM A240 da ASME SA240.
| Dukiya | 321 |
| Ƙarfin Haɓaka, min.(ksi) | 30 |
| Ƙarfin Jiki, min.(ksi) | 75 |
| Tsawaitawa, min.(%) | 40 |
| Hardness, max.(Rb) | 95 |
Abubuwan Jiki
Kaddarorin jiki don Nau'in 321 bakin karfe
| Dukiya | 321 Data |
| Maɗaukaki, lb/in3 | 0.286 |
| Modulus na Elasticity, psi | 28.0 x 106 |
| Ƙididdigar Ƙarfafa Ƙarfafa Ƙwararru, 68-212˚F, / ˚F | 9.2 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 9.3 |
| Takamaiman Zafi, Btu/lb ˚F | 0.12 |
| Resistivity na Lantarki, Microohm-in | 28.4 |
Matsayi
Ma'auni na yau da kullun don Nau'in 321 bakin karfe
| Dukiya | 321 Data |
| Maɗaukaki, lb/in3 | 0.286 |
| Modulus na Elasticity, psi | 28.0 x 106 |
| Ƙididdigar Ƙarfafa Ƙarfafa Ƙwararru, 68-212˚F, / ˚F | 9.2 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 9.3 |
| Takamaiman Zafi, Btu/lb ˚F | 0.12 |
| Resistivity na Lantarki, Microohm-in | 28.4 |
Lokacin aikawa: Afrilu-17-2023