soojenemisel väga vähe paisuv raua ja nikli sulam
vähima soojuspaisumisega rauaniklisulam niklisisaldusega u 36%, a 36% nickel-iron alloy with a very small thermal expansion coefficient of 1.3x10-6 oC-1 from 15 to 250 oC, which makes it suitable for use in making ceramic-to-metal and glass-to-metal seals
invar . Materjalitehnika terminibaas. Институт эстонского языка, Сынавееб 2026. https://sonaveeb.ee/search/unif//mtr/invar/1/est (01.07.2026)
