Aloi ya Fe-Cr-Al yenye upinzani mkubwa na halijoto ya utendakazi kuliko ile ya aloi ya NiCr na pia ina bei ya chini.
Maombi
Kizuizi cha umeme cha chuma-chrome-alumini hutumika sana kwa ajili ya kutengeneza vipengele vya kupokanzwa vya umeme katika vifaa vya nyumbani na tanuri za viwandani. Matumizi ya kawaida ni pasi tambarare, mashine za kupiga pasi, hita za maji, dari za ukingo wa plastiki, pasi za kusubu, vipengele vya mrija vilivyofunikwa na ala za chuma na vipengele vya katriji.
Eneo la maombi
Bidhaa zetu hutumika sana katika vifaa vya matibabu ya joto, vipuri vya magari, utengenezaji wa chuma na chuma,
tasnia ya alumini, vifaa vya metali, vifaa vya petrokemikali, mashine za kioo, mashine za kauri,
mashine za chakula, mashine za dawa, na tasnia ya uhandisi wa nguvu.
Kiwango cha Kemikali, %
| Nyenzo ya aloi | Muundo wa kemikali % | |||||||||
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | wengine | |
| kiwango cha juu (≤) | ||||||||||
| 1Cr13Al4 | 0.12 | 0.025 | 0.025 | 0.7 | ≤1.00 | 12.5-15.0 | - | 3.5-4.5 | Pumziko | - |
| 0Cr15Al5 | 0.12 | 0.025 | 0.025 | 0.7 | ≤1.00 | 14.5-15.5 | - | 4.5-5.3 | Pumziko | - |
| 0Cr25Al5 | 0.06 | 0.025 | 0.025 | 0.7 | ≤0.60 | 23.0-26.0 | ≤0.60 | 4.5-6.5 | Pumziko | - |
| 0Cr23Al5 | 0.06 | 0.025 | 0.025 | 0.7 | ≤0.60 | 20.5-23.5 | ≤0.60 | 4.2-5.3 | Pumziko | - |
| 0Cr21Al6 | 0.06 | 0.025 | 0.025 | 0.7 | ≤1.00 | 19.0-22.0 | ≤0.60 | 5.0-7.0 | Pumziko | - |
| 0Cr19Al3 | 0.06 | 0.025 | 0.025 | 0.7 | ≤1.00 | 18.0-21.0 | ≤0.60 | 3.0-4.2 | Pumziko | - |
| 0Cr21Al6Nb | 0.05 | 0.025 | 0.025 | 0.7 | ≤0.60 | 21.0-23.0 | ≤0.60 | 5.0-7.0 | Pumziko | Nb add0.5 |
| 0Cr27Al7Mo2 | 0.05 | 0.025 | 0.025 | 0.2 | ≤0.40 | 26.5-27.8 | ≤0.60 | 6.0-7.0 | Pumziko | |
Sifa kuu za kiufundi za Aloi ya FeCrAl:
| Chapa Mali | 1Cr13Al4 | 1Cr21Al4 | 0Cr21Al6 | 0Cr23Al5 | 0Cr25Al5 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
| Kipengele kikuu cha kemikali% | Cr | 12.0-12.5 | 17.0-21.0 | 19.0-22.0 | 20.5-23.5 | 23.0-26.0 | 21.0-23.0 | 26.5-27.8 |
| Al | 4.0-6.0 | 2.0-4.0 | 5.0-7.0 | 4.2-5.3 | 4.5-6.5 | 5.0-7.0 | 6.0-7.0 | |
| Fe | Mizani | Mizani | Mizani | Mizani | Mizani | Mizani | Mizani | |
| Re | Inafaa | Inafaa | Inafaa | Inafaa | Inafaa | Inafaa | Inafaa | |
| Nambari ya Nyongeza: 0.5 | Nyongeza Mwezi: 1.8-2.2 | |||||||
| Kiwango cha juu cha matumizi ya kipengele | 950 | 1100 | 1250 | 1250 | 1250 | 1350 | 1400 | |
| Sehemu ya Kuyeyuka | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1510 | |
| Uzito g/cm3 | 7.40 | 7.35 | 7.16 | 7.25 | 7.10 | 7.10 | 7.10 | |
| Upinzani μΩ·m,20 | 1.25±0.08 | 1.23±0.06 | 1.42±0.07 | 1.35±0.06 | 1.45±0.07 | 1.45±0.07 | 1.53±0.07 | |
| Nguvu ya Mpa ya Kukaza | 588-735 | 637-784 | 637-784 | 637-784 | 637-784 | 637-784 | 684-784 | |
| Kiwango cha ugani% | 16 | 12 | 12 | 12 | 12 | 10 | ||
| Masafa ya kupinda yanayorudiwa | 5 | 5 | 5 | 5 | 5 | |||
| Kuinua kwa kasi h/ | - | 80/1300 | 80/1300 | 50/1350 | ||||
| Joto Maalum J/g. | 0.490 | 0.490 | 0.520 | 0.460 | 0.494 | 0.494 | 0.494 | |
| Kigezo cha Uendeshaji Joto KJ/Mh | 52.7 | 46.9 | 63.2 | 60.1 | 46.1 | 46.1 | 45.2 | |
| Kipimo cha upanuzi wa mstari aX10-6/ (20-1000) | 15.4 | 13.5 | 14.7 | 15.0 | 16.0 | 16.0 | 16.0 | |
| Ugumu HB | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | |
| Muundo mdogo | Ferritic | Ferritic | Ferritic | Ferritic | Ferritic | Ferritic | Ferritic | |
| Sumaku | Sumaku | Sumaku | Sumaku | Sumaku | Sumaku | Sumaku | Sumaku | |
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