N6 nickel rod selection guide: 4 key parameters determine quality

N6 nickel rod belongs to the most widely used bar grade in industrial pure nickel, In chlor-alkali chemicals, hydrometallurgy, electroplate, Electrolysis and other strong alkali corrosion conditions.Select N6 nickel rod, The core should control four key parameters, diameter, length, Surface condition and heat treatment condition, This article will be broken down one by one, Help purchasing and technical personnel to make a good selection.

Parameter 1: Diameter specification The diameter range of N6 nickel rod commonly used in the market is Φ10-200mm, and different diameters are suitable for different application scenarios. Φ10-30mm specifications, mostly used for electroplating anode rods, decorative rods and various chemical accessories;Φ30-80mm, suitable for reactor stirring shaft, valve rod, fasteners;Φ80-150mm, often used as electrolytic cathode rod, plating bath rod and anode plate substrate;Φ150-200mm, generally used as thick-walled pipe blanks and large structural parts. Selection suggestions, Determine the diameter according to the machining drawing, 2-5mm machining allowance reserved during processing, Convenient for subsequent turning.

Parameter 2: Length Conventional spot lengths on the market include 1 m, 2 m, 3 m and 6 m. 1 meter length is mostly used for laboratory samples and small batch parts processing;2 meters belong to general specifications, standing stock;3 meters is also a common spot specification in the industry;6 meters long rod is mostly used for large-scale equipment and long-axis workpieces, belonging to customized category. Selection suggestions: preferred to use 2 meters, 3 meters of conventional length, sufficient stock, short delivery cycle;6 meters long rod needs custom production, delivery time is generally 15-20 days.

Parameter 3: Surface state N6 nickel rod is mainly divided into three surface states: pickling surface (AP), polished surface (BA) and black surface (NO.1). The pickling surface is treated to remove the surface oxide scale, and the appearance is silver-gray, which is also the most used type in industrial scenes;Polishing surface bright, roughness Ra≤0.8μm, suitable for food, medicine and other clean scenes;The black skin retains the oxide scale formed by rolling, generally only as a blank, for subsequent secondary processing. Scenario matching: chemical equipment, hydrometallurgy, electroplating conditions, 90% of the scenarios selected acid wash;Food grade, pharmaceutical grade, electronic grade products use polished surface;The black leather surface is only used as a raw material blank for reprocessing.

Parameter 4: Heat treatment status N6 nickel rod is mainly available in annealed state (M) and hard state (Y). Annealed state is also called soft state, elongation ≥40%, good plasticity of the material, easy to process molding;Higher hard strength, tensile strength ≥520MPa, used for structural parts with high strength requirements. Mechanical properties reference: annealed N6 nickel rod tensile strength ≥380MPa, yield ≥100MPa, elongation ≥40%;Hardened products tensile strength ≥520MPa, yield ≥380MPa, elongation ≥15%. Selection suggestion: Annealed state is preferred for 90% of industrial working conditions;Hard state is only selected for structural parts with special strength requirements.

General model, also the most used combination: diameter Φ30-80mm, length 2 meters, pickling surface, annealed state;Common combination of hydrometallurgical electrolytic rod: Φ80-150mm, 3 m length, pickling surface, annealed state;Food and pharmaceutical grade selection: Φ10-30mm, 2 m length, polished surface, annealed state;Long axis high strength structural parts selection: Φ30-80mm, 6 meters long, pickling surface, hard state.

N6 nickel purity ≥99.5%, N4 nickel purity ≥99.9%.Selection, N6 is the mainstream industrial grade., 20%-30% lower procurement costs than N4, The vast majority of industrial scenarios can meet the useN4 is a high-purity nickel material, More for electronics, High purity chemical field, adaptive semiconductor, High-purity electrolysis electrode and other high-demand scenarios.

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