Invar® 36 is a nickel-iron-chromium alloy with additions of copper and molybdenum. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. Invar® 36 has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric and nitric acids. Invar 36 is used for tanks, piping, heat exchangers, pumps, valves and other process equipment. Standard product forms are round, flats, pipe, tube, plate, sheet, strip and wire.
Unit of Measure

Specifications

Material

N/A Invar®

Shapeform

N/A Plates

Thickness

N/A 3/8 inches

Thickness

N/A 0.375 inches9.5250 mm

Nickel Alloy Compositions

Alloy

N/A Invar® 36

Basic Composition

N/A 36.0% Nickel 64.0% Iron

Density

N/A 0.293 lbs/in³8.11 g/cm³

ASTM Specification

N/A UNS K93600

Typical Mechanical Properties

Tensile Strength

N/A 71000 psi490 MPa

Yield Strength (0.2% Offset)

N/A 35000 psi240 MPa

Elongation

N/A 42 %

Melting Temperature Range

N/A 2610 ºF1430 ºC