Nickel 200 Bars: Superior Performance Forms the Cornerstone of Industry
Nickel 200 bars (UNS N02200) are a high-purity commercially pure nickel alloy with a nickel content exceeding 99.0%. Their superior comprehensive performance makes them important in numerous industrial fields. This material possesses excellent corrosion resistance, good mechanical properties, and outstanding machinability, making it a preferred material in high-end fields such as chemical engineering, aerospace, and electronics.
Chemical Composition and Physical Properties
Chemical Composition (%)
The chemical composition of Nickel 200 bars is strictly controlled to ensure the stability of material properties: Nickel (Ni) ≥ 99.0% (balance), Iron (Fe) ≤ 0.40%, Carbon (C) ≤ 0.15%, Manganese (Mn) ≤ 0.35%, Silicon (Si) ≤ 0.35%, Copper (Cu) ≤ 0.25%, Sulfur (S) ≤ 0.01%. This ultra-low carbon design effectively avoids the risk of intergranular corrosion.
Physical Properties
• Density: 8.89 g/cm³
• Melting Point: 1435-1446℃
• Thermal Conductivity: 70.2-90 W/m·K (room temperature)
• Resistivity: 0.096×10⁻⁶ Ω·m
• Coefficient of Linear Expansion: 13.3-16.6×10⁻⁶/K
• Magnetic Properties: Ferromagnetic
Mechanical Properties
Ni200 bars exhibit excellent mechanical properties at room temperature. Performance parameters under different conditions are as follows:
Product Form Condition Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Brinell Hardness (HB)
Bars Hot Rolled 60-85 15-45 35-55 45-80
Bars Cold Drawn/Annealed 55-75 15-30 40-55 45-70
Plate Annealed 55-80 15-40 40-60 45-75
This alloy maintains good mechanical properties at high temperatures. Its mechanical properties remain largely unchanged in environments below 600℃, making it suitable for long-term high-temperature operation.
Excellent Corrosion Resistance
The most prominent characteristic of Nickel 200 bars is their excellent corrosion resistance, performing exceptionally well in various corrosive environments:
1. Alkaline Environments: It exhibits excellent corrosion resistance to caustic alkalis (such as sodium hydroxide and potassium hydroxide). In a 50% boiling caustic soda solution, the annual corrosion rate does not exceed 25μm, making it an ideal material for the alkali industry.
2. Reducing Media: It exhibits good corrosion resistance in reducing media such as hydrochloric acid and sulfuric acid, and excellent corrosion resistance to halogen environments such as chlorine and fluorine.
3. Neutral Environment: Exhibits excellent corrosion resistance to alkaline and neutral solutions containing carbonates, nitrates, oxides, and acetates; extremely stable in seawater and saline solutions.
4. High Temperature Environment: Demonstrates excellent oxidation resistance at high temperatures (≤600℃), suitable for harsh environments such as ion-exchange membrane caustic soda processes.
Machining and Heat Treatment Properties
Machining Properties
Ni 200 bars possess excellent machinability and can be processed using various techniques:
• Cold Working: Cold rolling and cold drawing are possible. The hardening rate is low, making it suitable for manufacturing components with various complex shapes.
• Hot Working: Hot working temperature range is 900-1200℃. Forging and rolling processes are possible.
• Welding: TIG welding or MIG welding is recommended. Argon purity ≥99.99%. Post-weld heat treatment is generally not required.
Heat Treatment
• Annealing Temperature: 700-900℃
• Solution Treatment: 950-1050℃, rapid cooling or air cooling
• Aging Treatment: Determined based on specific application requirements.
Application Areas
Chemical Industry
Ni 200 bars are widely used in the manufacture of chemical equipment, including reactors, evaporators, heat exchangers, and piping systems. They are particularly suitable for highly corrosive environments such as alkali production, chlor-alkali chemical industry, and organochloride production.
Food Processing
Due to its excellent corrosion resistance and hygienic properties, nickel 200 bars are used in the manufacture of food processing equipment, salt refining equipment, etc., meeting food industry hygiene standards.
Aerospace
In the aerospace field, nickel 200 bars, with their high strength and resistance to high and low temperatures, are commonly used in the manufacture of critical components such as aircraft engine parts and spacecraft connectors.
Electronics and Electrical Engineering
Nickel 200 bars possess high electrical and thermal conductivity, making them widely used in the manufacture of conductive components such as electronic components, battery electrodes, and thermocouples.
Marine Engineering
In marine environments, the seawater corrosion resistance of nickel 200 bars makes them the preferred material for marine engineering projects such as offshore platforms, ship pipeline systems, and seawater desalination plants.
Execution Standards and Specifications
Execution Standards
• Chinese Standards: GB/T 2054-2005, GB/T 2072-2007
• American Standards: ASTM B160 (Bars), ASTM B161 (Seamless Tubes), ASTM B162 (Plates/Strips)
• German Standards: DIN 17752, W.Nr 2.4060
Product Specifications
• Diameter Range: Φ3-Φ300mm
• Length: 10mm-6 meters
• Supply Condition: Soft (M-state), Semi-hard (1/4H, 1/2H, 3/4H), Hard (H-state)
Product Advantages
1. High Purity: Nickel content ≥99.0%, ensuring stable material performance
2. Excellent Comprehensive Performance: Combining high strength, high toughness, and excellent corrosion resistance
3. Good Processing Performance: Excellent cold and hot working performance, good weldability
4. Wide Applications: Suitable for multiple fields such as chemical, aerospace, electronics, and marine industries.
5. High Cost-Effectiveness: Compared to other nickel-based alloys, it has a more cost-effective advantage.
Purchase Recommendations
When selecting nickel 200 bars, it is recommended to choose the appropriate product form and condition based on the specific application environment:
• High-temperature environments (≤600℃): Nickel 200 is recommended.
• Higher temperature environments (≤1230℃): Low-carbon variant nickel 201 is recommended.
• Corrosion resistance is important in chemical corrosive environments.
• Electrical and electronic applications require attention to the material's electrical conductivity.
With its excellent comprehensive performance and wide range of applications, nickel 200 bars have become an indispensable key material in modern industry. Whether in harsh chemical environments or precision electronic equipment, nickel 200 bars provide reliable performance guarantees, providing solid material support for the development of various industries.
