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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Hastelloy˘ C-22

Hastelloy˘ C-22

A Nickel-Chromium-Molybdenum alloy with better overall resistance and versatility than any other NiCrMo available. It has excellent resistance to localised corrosion and to a variety of mixed industrial chemicals. Hastelloy C-22 is used in severely corrosive media involving high chloride and temperature applications such as buffer solutions, active pharmaceutical ingredients (API), fabric softeners, cleaning supplies, and condiments such as soy and chili sauce. Like other nickel alloys, Hastelloy C-22 is extremely ductile, exhibits exceptional weldability, and can easily be fabricated into industrial components.

Hastelloy C-22 is also known as Nicrofer 5621, Superimphy C22, and Inconel 622.

Available in all profile options

Hastelloy˘ C-22 - Alloy Wire International 1

Key Features

Hastelloy C-22 offers the following key features:

Better overall corrosion resistance than Hastelloy C-4 & C-276 and Inconel 625.
Outstanding resistance to pitting, crevice corrosion and stress corrosion cracking.

Typical Applications

Hastelloy C-22 is known to be suitable for the following applications:

Chlorination systems
Nuclear fuel reprocessing
Pickling systems


Designations

W.Nr 2.4602
UNS N06022
AWS 053

Specifications

ASTM B574
ASTM B575
ASTM B619
ISO 15156-3 (NACE MR 0175)

Chemical Composition

The chemical composition of Hastelloy C-22 is indicated in the table below:

ElementMin %Max %
Cr20.0022.50
Mo12.5014.50
Fe2.006.00
W2.503.50
C0.015
Si0.08
Co2.50
Mn0.50
V0.35
P0.02
S0.02
NiBal

Alloy Details

Hastelloy C-22 density, melting point, coefficient of expansion, and modulus of elasticity is indicated in the table below:

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
8.69 g/cm³1399 °C12.4 μm/m °C (20 – 100 °C)78.6 kN/mm²205.5 kN/mm²
0.314 lb/in³2550 °F6.9 x 10-6 in/in °F (70 – 212 °F)11400 ksi29806 ksi

Heat treatment of finished parts

The typical heat treatment of Hastelloy C-22:

Condition as supplied by AWITypeTemperatureTimeCooling
Annealed or Spring TemperStress Relieve400 – 450 °C (750 – 840 °F)2 HrAir

Properties

The typical mechanical properties of Hastelloy C-22:

Annealed
Approx. tensile strength<1100 N/mm²<159 ksi
Approx. operating temperature depending on load** and environment-200 to +400 °C-330 to +750 °F
Spring Temper
Approx. tensile strength1400 – 1700 N/mm²203 – 247 ksi
Approx. operating temperature depending on load** and environment-200 to +400 °C-330 to +750 °F

The above tensile strength ranges are typical. If you require different please ask.

*Trade name of Haynes International