Patohia te 347 (UNS S34700) i roto i nga ngongo kopaki
Whakaahuatanga
347 ngongo kowiri tira
Ko te momo 347 he niobium kua whakapumauhia te chromium nickel austenitic kowiri tira me te parenga waikura rite ki te 304/304L.Ka whakamahia tenei karaehe i roto i te awhe pāmahana 800-1500˚F i reira ka whakapumauhia ki te chromium carbide precipitation ma te taapiri o te niobium, ka puta ko te rerenga o nga carbide niobium.Ko te Momo 347 he tino pai te parenga waikura intergranular i muri i te rongonga ki tenei awhe pāmahana, a ka atete tenei karaehe ki te waikura tae atu ki te 1500˚F, he teitei ake te ngokingoki me te ahotea i te 304/304L.He pai hoki te uaua o te pāmahana iti me te kore-aukume i roto i te ahua o te annealed.
347 ngongo kowiri tira
Hangahanga matū
Te Tito Matū (wt%) tepe kua tohua i ASTM A240 me ASME SA240*.
| Huānga | 347 |
| waro | 0.08 |
| Chromium | 17.0-19.0 |
| Nickel | 9.0-13.0 |
| konupora | 2.00 |
| Silicon | 0.75 |
| Phosphorus | 0.045 |
| whanariki | 0.030 |
| Niobium | 10 x C min / 1.00 mōrahi |
Nga Taonga Miihini347 ngongo kowiri tira
Nga whakaritenga mo nga taonga miihini mo nga hua kua tohua i roto i te ASTM A240 me te ASME SA240.
| Taonga | 347 |
| Kaha Tuku, min.(ksi) | 30 |
| Te Kaha Tensile, min.(ksi) | 75 |
| Whakaroa, min.(%) | 40 |
| Te pakeke, max.(Rb) | 92 |
Āhuatanga ā-tinana
Ko nga ahuatanga o te tinana mo te Momo 347 he kowiri tira
| Taonga | 347 Raraunga |
| Kiato, lb/in3 | 0.288 |
| Modulus of Elasticity, psi | 28.0 x 106 |
| Taurangi o te Roha Ngawha, 68-212˚F, /˚F | 9.3 x 10-6 |
| Kawenga Weariki, Btu/ft hr ˚F | 9.2 |
| Wera Motuhake, Btu/lb ˚F | 0.12 |
| Te Atete Hiko, Microohm-in | 28.4 |
Paerewa
Paerewa angamaheni mo Momo 347 kowiri tira
| 347 |
| ASTM A240 |
| ASME SA240 |
| AMS 5512 |
Te wa tuku: Apr-22-2023