Carpenter Super Invar 32, a magnetic, austenitic, solid solution alloy containing iron, nickel and cobalt, is designed to prov
Carpenter Super Invar 32
Identification UNS Number:K93500
General Information
Description
Carpenter Super Invar 32, a magnetic, austenitic, solid solution alloy containing iron, nickel and cobalt, is designed to provide minimum thermal expansion at room temperatures.
Applications
Applications for Super Invar 32-5 have included structural components for supports and substrates in optical and laser systems requiring precision measurements.
This alloy has also been used in wave guide tubes and other systems requiring metals in conjunction with low expansion glass/quartz assemblies.
Properties
Physical Properties
Specific Gravity
--
8.15
Density
--
0.2940
lb/in³
Mean Coefficient of Thermal Expansion
-67.00 °F, 203.0 °F
0.350
x 10-6 in/in/°F
·
Poisson's Ratio
--
0.230
Modulus of Elasticity (E)
--
21.0
x 103 ksi
Electrical Resistivity
73.4 °F
481.3
ohm-cir-mil/ft
Martensite Start
--
-112
°F
