Uaea u'amea fa'a'au'au sa'o mo le fa'amaufa'ailogaina o tioata
Fa'avasegaga: maualalo le fua fa'atatau o le fa'alauteleina o le vevela
Fa'aoga: E fa'aaogaina le Invar i mea e mana'omia ai le mautu maualuga o le fua, e pei o meafaigaluega sa'o, uati, fua fa'atatau o le mafui'e, fa'avaa o ufimata o televise, valve i afi, ma uati e tete'e i le maneta. I le su'esu'eina o fanua, pe a faia le fa'atulagaina o le maualuga muamua (maualuga le sa'o), o u'amea fa'atulagaina e fa'aaogaina e faia i le Invar, nai lo le la'au, fiberglass, po'o isi u'amea. Sa fa'aaogaina u'amea Invar i nisi pistons e fa'atapula'a ai lo latou fa'alauteleina o le vevela i totonu o latou cylinders.
Fa'atulagaga Fa'akemikolo i le %, Invar
| Ni 35-37% | Fe . | C 0.05% | Si 0.3% | Mn 0,3-0,6% | S o le 0.015% |
| P 0.015% | Mo 0.1% | V 0.1% | Al 0.1% | Cu 0.1% | Cr 0,15% |
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| Fa'asologa o le Vevela/ºC | 1/10-6ºC-1 | Fa'asologa o le Vevela/ºC | 1/10-6ºC-1 |
| 20~-60 | 1.8 | 20~250 | 3.6 |
| 20~-40 | 1.8 | 20~300 | 5.2 |
| 20~-20 | 1.6 | 20~350 | 6.5 |
| 20~0 | 1.6 | 20~400 | 7.8 |
| 20~50 | 1.1 | 20~450 | 8.9 |
| 20~100 | 1.4 | 20~500 | 9.7 |
| 20~150 | 1.9 | 20~550 | 10.4 |
| 20~200 | 2.5 | 20~600 | 11 |
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150 0000 2421