A nickel-iron-chromium alloy with additions of copper and molybdenum. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. The alloy has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric and nitric acids. 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 Alloy

Shapeform

N/A Plates

Thickness

N/A 5/16 inches

Thickness

N/A 0.3125 inches7.92 mm

Plate Weight per Unit Area

N/A 0.09370 lbs/in²65.87762152 kg/m²

Nickel Alloy Compositions

Alloy

N/A Alloy 20

Basic Composition

N/A 0.6% Niobium 2.5% Molybdenum 20.0% Chrominum 3.5% Copper 35.0% Nickel 37.0% Iron

Density

N/A 0.291 lbs/in³8.05 g/cm³

ASTM Specification

N/A ASME SB-463 ASTM B-463 UNS N08020

Typical Mechanical Properties

Tensile Strength

N/A 90000 psi620 MPa

Yield Strength (0.2% Offset)

N/A 45000 psi300 MPa

Elongation

N/A 40 %