Alloy 20

Nickel alloy

Nickel iron chromium alloy stabilised with niobium, specified primarily for sulphuric acid service.

Grades

Commonly supplied

Alloy 20, Carpenter 20Cb-3, UNS N08020

UNS: N08020

Characteristics

Acid service	Designed for sulphuric acid across a wide concentration range
Stabilisation	Niobium prevents carbide precipitation after welding
SCC	Good resistance to chloride stress corrosion cracking
Machinability	Better than most nickel alloys

Product forms

Typical applications

Sulphuric acid plant

Pickling systems

Chemical process

Pharmaceutical

Technical data

Typical values for reference. Confirm the actual heat against the mill certificate supplied with your order.

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