Nau'in 347 (UNS S34700) a cikin bututu mai naɗe
Bayani
347 bakin karfe nada bututu
Nau'in 347 shine niobium stabilized chromium nickel austenitic bakin karfe tare da juriyar 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 ƙarin niobium, wanda ke haifar da hazo na niobium carbide.Nau'in 347 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.
347 bakin karfe nada bututu
Haɗin Sinadari
Ƙimar Kemikal (wt%) kamar yadda aka ƙayyade a ASTM A240 da ASME SA240*.
| Abun ciki | 347 |
| Carbon | 0.08 |
| Chromium | 17.0-19.0 |
| Nickel | 9.0-13.0 |
| Manganese | 2.00 |
| Siliki | 0.75 |
| Phosphorus | 0.045 |
| Sulfur | 0.030 |
| Niobium | 10 x C min / 1.00 max |
Kayayyakin Injini347 bakin karfe nada bututu
Bukatun kadarorin injina don samfurin da aka soke kamar yadda aka ƙayyade a ASTM A240 da ASME SA240.
| Dukiya | 347 |
| Ƙarfin Haɓaka, min.(ksi) | 30 |
| Ƙarfin Jiki, min.(ksi) | 75 |
| Tsawaitawa, min.(%) | 40 |
| Hardness, max.(Rb) | 92 |
Abubuwan Jiki
Kaddarorin jiki don Nau'in 347 bakin karfe
| Dukiya | 347 Data |
| Maɗaukaki, lb/in3 | 0.288 |
| Modulus na Elasticity, psi | 28.0 x 106 |
| Ƙididdigar Ƙarfafa Ƙarfafa Ƙwararru, 68-212˚F, / ˚F | 9.3 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 9.2 |
| Takamaiman Zafi, Btu/lb ˚F | 0.12 |
| Resistivity na Lantarki, Microohm-in | 28.4 |
Matsayi
Ma'auni na yau da kullun don Nau'in 347 bakin karfe
| 347 |
| ASTM A240 |
| ASME SA240 |
| Farashin 5512 |
Lokacin aikawa: Afrilu-22-2023