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TEL: 800-638-2581
E-MAIL: sales@espi-metals.com
FAX: 541-488-8313
GENERAL PROPERTIES
MATERIAL OVERVIEW
Characteristics: Invar is a trademark for an iron-nickel alloy containing 35-36% nickel and
characterized by an extremely low coefficient of thermal expansion (excellent for applications
requiring no dimensional changes with temperature variations.) Invar is strong, tough, ductile
and possesses a useful degree of corrosion resistance. It is magnetic in the temperature range
up to 400 oF.
Applications: Precision instruments, measuring tapes, weights, etc.
For more information visit the reference library at our web site: http://www.espi-metals.com
Specific Gravity:
8.08
Melting Point:
2600 oF
Density:
0.292 lb/in3
Electrical Resistance:
494 ohms/mil/ft
Specific Heat:
0.123 BTU/lb/oF
Thermal Conductivity:
72.6 BTU/ft2/in/oF/hr
Inflection Temperature:
375 oF
Curie Temperature:
530 oF
Alloys: INVAR 36INVAR 36
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WIRE
Item Description
Grades
Invar Wire .003" to .090"
36
Wire is spooled to order and sold by the foot or meter.
ROD
Item Description
Grades
Invar Rod .125"
36
Invar Rod .250"
36
Rod is cut to order and sold by the foot.
FOIL
Item Description
Grades
Invar Foil .001" to .009"
36
Foil is cut to order and sold by the square inch or square foot.
TYPICAL ANALYSIS
Impurities in Percent
Invar 36
Ni
35.5-36.5
Si
.50 max
Mn
.50 max
Fe
Bal.
Alloys: INVAR 36 TEL: 800-638-2581
E-MAIL: sales@espi-metals.com
FAX: 541-488-8313
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TEL: 800-638-2581
E-MAIL: sales@espi-metals.com
FAX: 541-488-8313
SHEET
Item Description
Grades
Invar Sheet .010" to 1"
36
Sheet is cut to order and sold by the square inch or square foot.
POWDER, SHOT, PELLETS, & INGOT
Item Description
Grades
Invar Pellets
.125"D X .250"L
36
Invar Pellets
.250"D X .250"L
36
Invar Powder
-200 Mesh
36
Invar Powder
-325 Mesh
36
Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram.
Alloys: INVAR 36
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Alloys: INVAR 36 TEL: 800-638-2581
E-MAIL: sales@espi-metals.com
FAX: 541-