EN
Pure Nickel Bar N6 Dia 12mm Cold Drawn for Corrosion Resistant Fasteners
High-purity N6 commercial pure nickel round bar (Dia 12mm) engineered for precision machined fasteners, marine bolts, and chemical valves operating in severe alkali and acidic environments.
- Overview
- Specifications
- Key Product Features
- Applications
- Advantage
- FAQ
- Recommended Products
Product Summary
DLX Alloy supplies premium grade N6 pure nickel bar (commercially pure nickel with Ni ≥ 99.6%) with a cold-drawn diameter of 12mm and tight dimensional tolerances (h8/h9). Specifically developed for precision turning, CNC machining, and cold heading, this solid nickel round rod provides exceptional resistance to caustic soda, dry halogen gases, and marine corrosion. Backed by a 1,200 tons/month production capacity, complete mill test certification, and a flexible 5 kg MOQ.
Product Overview of High Purity N6 Nickel Round Bar Stock
N6 pure nickel round bar is an unalloyed commercial wrought nickel grade delivering outstanding electrical and thermal conductivity, combined with unmatched resistance to reducing chemicals and alkaline solutions. When cold-drawn to 12mm diameter, it achieves optimized tensile strength and machinability for manufacturing heavy-duty industrial fasteners, marine studs, chemical pump shafts, and electrical lead pins.
Manufactured through vacuum induction melting (VIM) and precision cold drawing, our Dia 12mm nickel rod stock features smooth surface finish (Ra ≤ 0.8 µm), straightness tolerance within 0.5 mm/m, and uniform microstructural grain size. This guarantees zero micro-cracking during thread rolling, drilling, and high-speed Swiss-style turning.
Technical Specifications and Mechanical Properties of Cold Drawn Nickel Bars
Chemical Composition (Mass Fraction, %)
| Element | Ni (+Co) | C | Si | Mn | S | P | Fe | Cu |
|---|---|---|---|---|---|---|---|---|
| N6 (UNS N02200 Equivalent) | ≥ 99.60 | ≤ 0.08 | ≤ 0.10 | ≤ 0.15 | ≤ 0.005 | ≤ 0.005 | ≤ 0.10 | ≤ 0.06 |
Physical and Thermal Properties
| Property | Metric Value |
|---|---|
| Density | 8.89 g/cm³ |
| Melting Point | 1435 - 1446 °C |
| Curie Temperature | 358 °C |
| Electrical Resistivity (20°C) | 0.096 µΩ·m |
| Shear Modulus | 76 GPa |
| Thermal Conductivity (100°C) | 70.2 W/(m·K) |
| Specific Heat (20°C) | 456 J/(kg·K) |
Mechanical Properties (Cold Drawn Condition)
| Parameter | Value |
|---|---|
| Diameter | 12.0 mm (Tolerance: -0.03 mm / h9) |
| Tensile Strength (Rm) | ≥ 550 MPa |
| Yield Strength (Rp0.2) | ≥ 420 MPa |
| Elongation (A5) | ≥ 15 % |
| Hardness | 140 - 180 HB |
| Surface Finish | Bright cold drawn / Centerless ground (Ra ≤ 0.8 µm) |
Key Product Features for Precision Machined Fasteners
- Superior Caustic and Alkali Resistance: Immune to stress corrosion cracking in boiling caustic soda (NaOH, KOH) solutions across all concentrations and temperatures.
- Outstanding Cold Heading and Thread Rolling: Excellent ductility allows seamless rolling of Class 2A/3A threads and cold forming of fastener heads without surface flaking.
- Consistent CNC Machining Quality: Controlled grain boundary purity and uniform hardness ensure stable chip breaking, low tool wear, and precise diameter tolerances on automatic lathes.
- High Electrical and Thermal Conductivity: Ideal for electrical connection bolts, battery terminal fasteners, and high-current busbar mounting pins.
- Cryogenic to Elevated Temperature Stability: Maintains impact toughness in cryogenic service down to liquid helium temperatures and thermal stability up to 300°C.
Industrial Applications for Corrosion Resistant Nickel Alloy Fasteners and Hardware
- Chemical and Petrochemical Processing: Fasteners, hex bolts, threaded rods, and studs used in chlorine production, caustic evaporators, and fatty acid reactors.
- Marine and Offshore Engineering: Saltwater-resistant fastening hardware, propeller shaft accessories, and subsea instrument housings.
- New Energy and Battery Manufacturing: High-conductivity connection studs, busbar clamping bolts, and hydrogen electrolysis cell mounting hardware.
- Food, Dairy, and Pharmaceutical Processing: Sanitary equipment fastening pins and valve stems requiring total purity and zero chemical contamination.
- Electronics and Vacuum Systems: Lead-in wires, vacuum feedthrough rods, and non-magnetic connection pins for high-vacuum chambers.
Why Choose DLX Alloy for Custom Machined Pure Nickel Bar Sourcing
- 1,200 Tons Monthly Capacity: Operating out of our 20,000+ m² modernized facility in Changzhou, China, ensuring scalable batch production and rapid global delivery.
- Rigid Quality Control: 100% PMI (Positive Material Identification) testing, ultrasonic flaw detection, and full dimensional inspection with optical projectors.
- Complete Traceability: EN 10204 3.1 Mill Test Certificate (MTC) provided with every batch, showing actual chemical spectrometry and mechanical test values.
- Flexible B2B Procurement: Low starting MOQ of only 5 kg for standard stock, with 0.5 kg free sample testing available for qualification.
- Secondary Processing Support: In-house precision cutting, chamfering, centerless grinding, and custom length packaging to your exact drawing specifications.
Frequently Asked Questions About N6 Pure Nickel Bar Machining and Fastener Manufacturing
Q1: What makes N6 pure nickel rod suitable for fastener manufacturing?
A1: N6 pure nickel provides a minimum nickel content of 99.6%, delivering high ductility and superior resistance to chemical attack. Cold-drawn 12mm N6 bars possess the exact balance of tensile strength and malleability required for thread rolling, hot forging, and Swiss CNC machining of hex bolts, nuts, and studs without internal tearing.
Q2: What is the difference between annealed and cold drawn N6 nickel bars?
A2: Cold-drawn N6 bars feature higher tensile strength (≥ 550 MPa) and hardness (140-180 HB) with tighter dimensional tolerances, making them the preferred raw material for immediate machining and fastening applications. Annealed bars are softer (90-120 HB) and suited for severe bending or deep drawing operations.
Q3: What dimensional tolerances can DLX Alloy achieve for 12mm nickel bars?
A3: Standard cold-drawn tolerance is ISO h9. For high-precision Swiss-type lathe feeding, we provide precision centerless grinding with tolerances reaching ISO h8 or h7 (±0.008 mm), along with mirror surface finishing down to Ra 0.4 µm.
Q4: What is your standard packaging and minimum order quantity (MOQ)?
A4: Our MOQ is 5 kg for standard stock diameters. Bars are bundled with protective plastic film, end caps, and packaged in reinforced export wooden cases or cardboard crates to prevent surface scratching and bending during sea or air transit.
Q5: Can DLX Alloy supply test samples before bulk purchase?
A5: Yes. We provide free material samples up to 0.5 kg for dimensional verification, chemical analysis, and trial machining. Contact our sales engineering team with your required length and target specifications.
