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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Hastelloy˘ C-4

Hastelloy˘ C-4

This Nickel-Chromium-Molybdenum alloy tolerates high temperatures and gives a design freedom in areas where weld geometry makes excessive heat build-up unavoidable. Resistance to general and localised corrosion and stress corrosion cracking is generally similar to Hastelloy C-276. With its high contents of Chromium and Molybdenum, Hastelloy C-4 is able to withstand both oxidizing and non-oxidizing acids, and is resistant to pitting and crevice attacks in the presence of chlorides and other halides. Like other nickel alloys, Hastelloy C-4 is ductile, easy to form and weld.

Hastelloy C-4 is also known as Nicrofer 6616.

Available in all profile options

Hastelloy˘ C-4 - Alloy Wire International 1

Key Features

Hastelloy C-4 offers the following key features:

Excellent resistance to stress-corrosion cracking and to oxidizing atmospheres at high temperature.
Exceptional resistance to a wide variety of chemical process environments including, hot contaminated mineral acids, solvents, chlorine, formic and acetic acids, and salt waters.

Typical Applications

Hastelloy C-4 is known to be suitable for the following applications:

Chemical processing


Designations

W.NR 2.4610
UNS N06455
AWS 052

Specifications

ASTM B574
ASTM B619

Chemical Composition

The chemical composition of Hastelloy C-4 is indicated in the table below:

ElementMin %Max %
Cr14.0018.00
Mo14.0017.00
Fe3.00
C0.015
Si0.08
Co2.00
Mn1.00
P0.04
S0.03
Ti0.70
NiBal

Alloy Details

Hastelloy C-4 density, melting point, coefficient of expansion, and modulus of elasticity is indicated in the table below:

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
8.64 g/cm³1399 °C10.8 μm/m °C (20 – 100 °C)81.2 kN/mm²212.4 kN/mm²
0.312 lb/in³2550 °F6.0 x 10-6 in/in °F (70 – 212 °F)11777 ksi30807 ksi

Heat treatment of finished parts

The typical heat treatment of Hastelloy C-4:

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-4:

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 strength1300 – 1700 N/mm²189 – 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