Ni70Cr30 ni aloi ya nikeli-kromiamu ya austenitiki inayofaa kwa matumizi ya halijoto hadi 1250°C. Kiwango cha juu cha kromiamu (30% kwa wastani) hutoa muda mzuri sana wa matumizi, hasa katika matumizi ya tanuru. Ni70Cr30 ina sifa ya upinzani mkubwa, upinzani mzuri wa oksidi, unyumbufu mzuri baada ya matumizi na uwezo bora wa kulehemu.
Ni70Cr30 hutumika kwa vipengele vya kupokanzwa kwa umeme katika tanuru za viwandani. Matumizi ya kawaida ni: tanuru za umeme na za enamel, hita za kuhifadhi, tanuru na tanuru zenye angahewa inayobadilika.
Sifa za kawaida za Mitambo (1.0mm)
Ukanda wa Nichrome
| Utendaji\ nyenzo | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
| Muundo | Ni | 90 | Pumziko | Pumziko | 55.0~61.0 | 34.0~37.0 | 30.0~34.0 |
| Cr | 10 | 20.0~23.0 | 28.0~31.0 | 15.0~18.0 | 18.0~21.0 | 18.0~21.0 | |
| Fe | ≤1.0 | ≤1.0 | Pumziko | Pumziko | Pumziko | ||
| Kiwango cha juu cha jotoºC | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
| Kiwango cha kuyeyuka ºC | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
| Uzito g/cm3 | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
| Upinzani katika 20ºC((μΩ·m) | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | ||
| Kurefuka wakati wa kupasuka | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
| Joto maalum J/g.ºC | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | ||
| Upitishaji wa joto KJ/m.hºC | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | ||
| Upanuzi wa mgawo wa mistari a×10-6/ (20~1000ºC) | 18 | 17 | 17 | 19 | 19 | ||
| Muundo wa maikrografi | Austenite | Austenite | Austenite | Austenite | Austenite | ||
| Sifa za sumaku | Isiyo na sumaku | Isiyo na sumaku | Isiyo na sumaku | Sumaku dhaifu | Sumaku dhaifu | ||
| Waya za Upinzani | ||
| RW30 | Nambari ya W.Nr 1.4864 | Nikeli 37%, Chrome 18%, Chuma 45% |
| RW41 | UNS N07041 | Nikeli 50%, Chrome 19%, Kobalti 11%, Molybdenum 10%, Titanium 3% |
| RW45 | Nambari ya W.r 2.0842 | Nikeli 45%, Shaba 55% |
| RW60 | Nambari ya W.r 2.4867 | Nikeli 60%, Chrome 16%, Chuma 24% |
| RW60 | UNS NO6004 | Nikeli 60%, Chrome 16%, Chuma 24% |
| RW80 | Nambari ya W.r 2.4869 | Nikeli 80%, Chrome 20% |
| RW80 | UNS NO6003 | Nikeli 80%, Chrome 20% |
| RW125 | Nambari ya W.r 1.4725 | Chuma cha BAL, Chrome 19%, Alumini 3% |
| RW145 | Nambari ya W.N 1.4767 | Chuma cha BAL, Chrome 20%, Alumini 5% |
| RW155 | Chuma cha BAL, Chrome 27%, Alumini 7%, Molybdenum 2% | |
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