N02200 (Nickel 200) Tubes: Unmatched Purity And Corrosion Resistance for Demanding Industries

Introduction: The Power of Pure Nickel in Critical Applications

N02200 (Nickel 200), a commercially pure nickel alloy (UNS N02200), is renowned for its exceptional corrosion resistance, high thermal/electrical conductivity, and ductility. Ideal for chemical processing, electronics, and food handling, Nickel 200 tubes deliver reliability in environments where material integrity is paramount. This article explores the unique properties, manufacturing excellence, and industry-specific solutions enabled by N02200 tubes.

Key Advantages of N02200 Tubes

1. Outstanding Corrosion Resistance

• Resists reducing acids (e.g., hydrochloric, sulfuric) and alkaline solutions up to 50% concentration.

• Performs exceptionally in dry chlorine, bromine, and fluorine gases below 315°C (600°F).

2. High Thermal & Electrical Conductivity

• Thermal conductivity: 70 W/m·K (20% higher than stainless steel), ideal for heat exchangers.

• Electrical resistivity: 6.84 μΩ·cm, widely used in battery components and semiconductor tooling.

3. Ductility and Formability

• Elongation: ≥40% (annealed condition), enabling complex cold-forming (e.g., U-bends for heat exchangers).

• Retains toughness even at cryogenic temperatures (-200°C/-328°F).

4. Regulatory Compliance

• Meets ASTM B161, ASME SB-161, and DIN 17750 standards.

• FDA-compliant for food contact applications (21 CFR 175.300).

  
  

Industry Applications

1. Chemical Processing

• Use Case: Reaction vessels and piping for caustic soda (NaOH) production.

• Benefit: Resists stress corrosion cracking in 40% NaOH at 200°C (392°F).

2. Electronics & Energy Storage

• Use Case: Battery cell casings and fuel cell bipolar plates.

• Benefit: Low ionic contamination ensures stable performance in lithium-ion batteries.

3. Food & Pharmaceutical

• Use Case: High-purity syrup transfer lines and fermentation tanks.

• Benefit: Non-reactive surface prevents flavor alteration, compliant with 3-A Sanitary Standards.

  
  

Manufacturing Excellence

• Material Specifications:

• Ni ≥99.0%, C ≤0.15%, Fe ≤0.40%, Mn ≤0.35%.

• Production Process:

1. Hot Extrusion: For large-diameter tubes (OD up to 300 mm).

2. Cold Drawing with Annealing: Achieves precise tolerances (OD ±0.05 mm) and recrystallized microstructure.

3. Surface Finishing: Electropolishing or pickling for oxide-free surfaces (Ra ≤0.8 μm).

• Quality Assurance:

• Eddy current testing for dimensional accuracy.

• Intergranular corrosion testing per ASTM G28.

  
  

FAQ

Q1: How does Nickel 200 differ from Nickel 201 (N02201)?
A: Nickel 201 has lower carbon (C ≤0.02%) to prevent graphite precipitation above 315°C. Use N02200 below 315°C; choose N02201 for higher temperatures.

Q2: Can N02200 be welded?
A: Yes, using ERNi-1 filler. Post-weld annealing at 705–925°C (1300–1700°F) restores corrosion resistance.

Q3: Is it suitable for marine environments?
A: Limited to low-velocity seawater; avoid stagnant conditions to prevent pitting. Consider super austenitic steels for severe marine use.

Q4: MOQ and lead time?
A: Standard sizes (OD 6–100 mm) MOQ 500 kg, 3-week delivery. Custom orders require 6–8 weeks.