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SuperalloyHastelloy˘ C-4

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Hastelloy˘ C-4This Nickel-Chromium-Molybdenum alloy tolerates high temperatures and gives a design freedom in areas whe

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.
Hastelloy C-4 is also known as Nicrofer 6616.

Chemical CompositionSpecificationsDesignationsKey FeaturesTypical Applications
ElementMin %Max %Cr14.0018.00Mo14.0017.00Fe–3.00C–0.015Si–0.08Co–2.00Mn–1.00P–0.04S–0.03Ti–0.70NiBalASTM B574ASTM B619W.NR 2.4610UNS N06455AWS 052Excellent resistance to stress-corrosion cracking and to oxidizing atmospheres at high temperatureExceptional resistance to a wide variety of chemical process environments including, hot contaminated mineral acids, solvents, chlorine, formic and acetic acids, and salt waters.Chemical processing
Density8.64 g/cm³0.312 lb/in³
Melting Point1399°C2550°F
Coefficient of Expansion10.8 μm/m °C (20 – 100°C)6.0 x 10-6 in/in °F (70 – 212°F)
Modulus of Rigidity81.2 kN/mm²11777 ksi
Modulus of Elasticity212.4 kN/mm²30807 ksi
Heat Treatment of Finished Parts
Condition as supplied by Alloy WireTypeTemperatureTime (Hr)Cooling
°C°F
Annealed or Spring TemperStress Relieve400 – 450750 – 8402Air
Properties
ConditionApprox. tensile strengthApprox. operating temperature
N/mm²ksi°C°F
Annealed800 – 1100116 – 159-200 to +400-330 to +750
Spring Temper1300 – 1700189 – 247-200 to +400-330 to +750

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

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