Material Family

Low-Carbon Commercially Pure Nickel (Unalloyed) Coil/Strip

The coiled form of pure nickel optimized for high-temperature stability.

Key Distinction

Guaranteed Low Carbon Content (C ≤ 0.02 wt.%)

This is the sole but critical difference from Nickel 200, preventing graphite precipitation at grain boundaries during prolonged high-temperature service.

Common Forms & Tempers

Forms: Cold Rolled Coil (Strip), Annealed Pickled Coil.
Temper: Annealed (Soft) for deep drawing; Hard, Half-Hard for spring applications requiring strength at temperature.

Same excellent formability as Nickel 200, but with safe high-temperature use.

Chemical Composition (Typical wt.%)

Ni (+Co): ≥ 99.0
C: ≤ 0.02
Fe: ≤ 0.40
Mn: ≤ 0.35
Cu: ≤ 0.25
Si: ≤ 0.35
S: ≤ 0.01

The very low carbon level ensures long-term microstructural stability under thermal stress.

Mechanical Properties (By Temper, Room Temp)

Annealed (Soft):
• Tensile: 380 - 550 MPa
• Yield: 100 - 275 MPa
• Elongation: 40 - 55%
Hard Temper (Typical):
• Tensile: 550 - 760 MPa
• Yield: 480 - 690 MPa
• Elongation: 2 - 10%

Identical ductility and formability to Nickel 200 coil. Lower strength than alloyed nickels but exceptional for fabrication.

Coil Physical Specifications (Typical)

Thickness: 0.05mm - 3.0mm (0.002" - 0.125")
Width: 10mm - 600mm (0.4" - 24")
Coil I.D.: 300mm, 405mm, 508mm (12", 16", 20")
Coil Weight: 50kg - 2000kg

Precision rolled for high-speed progressive die stamping and continuous forming.

Safe Service Temperature

Cryogenic to ~650°C (1200°F) for continuous service.

The safe upper temperature limit is significantly higher than for Nickel 200 coil due to carbon control.

Key Corrosion Resistance

• Excellent resistance to hot, concentrated caustic alkalis (NaOH, KOH) – its premier application.
• Excellent resistance to neutral/reducing salts, organic acids, dry halogen gases.

• Good resistance to dilute hydrochloric and sulfuric acids at room temperature.

•  Poor resistance to oxidizing acids (e.g., nitric acid).

Corrosion resistance is identical to Nickel 200. Its advantage is sustained integrity in hot corrosive environments.

Key Physical Properties

Density: 8.89 g/cm³
Melting Point: 1435-1445 °C
Thermal Conductivity: 70 W/m·K
Electrical Conductivity: ~25% IACS

Excellent thermal and electrical conductivity, useful for electrical and heat transfer applications.

Key Standards (Strip/Coil)

ASTM B162 / ASME SB-162 (Standard Specification for Nickel Plate, Sheet, and Strip - Grade UNS N02201), DIN 2.4061, 2.4068

The same ASTM standard covers both 200 and 201; the UNS number (N02201) defines the purchase.

Typical Coil Applications

• High-Temperature Chemical Processing: Components for caustic evaporators, melters, and handling systems operating above 315°C (600°F).
• Electronics & Aerospace: High-temperature shielding, battery components, fuel cell parts.
• Food & Pharmaceutical: High-temperature processing equipment requiring purity.
• Synthetic Fiber Production: Components in high-temperature polymer processing lines.
• Alkaline Fuel Cell & Electrolysis Systems.

The specialist coil material for high-temperature, corrosive alkaline service and high-purity thermal/electrical applications.