Nickel 201: Complete Properties & Application Guide

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Overview

Nickel 201 (UNS N02201 / W.Nr. 2.4061) is a low-carbon version of Nickel 200 with improved resistance to embrittlement at elevated temperatures. The restricted carbon content (max 0.02%) prevents graphitization and intergranular embrittlement above 315°C.

Chemical Composition

The chemical composition of Nickel 201 is carefully controlled to achieve its unique combination of properties and performance characteristics.

Element	Min %	Max %
Nickel (Ni)	99.0	99.5
Iron (Fe)	—	0.40
Carbon (C)	—	0.02
Manganese (Mn)	—	0.35
Silicon (Si)	—	0.35
Copper (Cu)	—	0.25
Sulfur (S)	—	0.01

Mechanical Properties at Room Temperature

The mechanical properties of Nickel 201 vary depending on product form and heat treatment condition. The data below represents typical values for solution-annealed material.

Property	Value
Tensile Strength	403 MPa
Yield Strength (0.2% offset)	103 MPa
Elongation in 2 inches	50%
Density	8.89 g/cm3
Melting Point	1446 °C
Max Service Temperature	600 °C

Corrosion Resistance

Same excellent corrosion resistance as Nickel 200 in caustic and reducing environments. The low carbon content prevents intergranular attack at elevated temperatures. Particularly recommended for applications above 315°C where Nickel 200 would be susceptible to embrittlement.

Applications

The unique combination of properties makes Nickel 201 suitable for a wide range of demanding applications:

• Caustic Production: High-temperature caustic processing equipment.
• Chemical Processing: Reaction vessels for fluoride and chloride environments.
• Electronics: Battery components, lead wires, and terminals.
• Aerospace: Cryogenic components requiring good ductility.
• Plating: Anodes and baskets for high-purity nickel plating.

Available Product Forms

Hangbo Alloy Group manufactures and supplies Nickel 201 in the following product forms, conforming to ASTM, AMS, and ASME specifications:

• Round Bars: Diameters from 6 mm to 300 mm, hot-finished or cold-drawn, solution annealed.
• Seamless Tubes & Pipes: Sizes from 6 mm OD to 219 mm OD, various wall thicknesses.
• Plates & Sheets: Thicknesses from 0.5 mm to 50 mm, hot-rolled or cold-rolled.
• Forgings: Custom flanges, rings, discs, and complex shapes per customer drawing.
• Welding Wire: Diameters 0.8 mm to 5.0 mm, precision-wound coils and spools.

Related Standards

Standard	Description
ASTM B160	Bar and Rod
ASTM B161	Seamless Pipe and Tube
ASTM B162	Plate, Sheet, and Strip
ASTM B564	Forgings
ASTM B366	Fittings
AWS A5.14	Welding Wire (ERNi-1)

Contact Us for Nickel 201

Hangbo Alloy Group maintains extensive inventory of Nickel 201 in all standard product forms. We can provide mill test certificates, third-party inspection reports (SGS, TUV), and custom processing services.

For quotations, material certifications, or technical consultation, contact our sales team or call +86-136-1165-6360. We typically respond within 10 minutes.