In Stock
Precision Rolling Blades for Copper-Nickel (Cu-Ni) Finned Tubes
High-toughness rolling blades specifically designed for the abrasive demands of copper-nickel alloy finning.
- Alloy Compatibility:
- Cu-Ni 90/10 (C70600 / Alloy 706) & 70/30 (C71500 / Alloy 715)
- Applicable Standards:
- ASTM / ASME SB359 (C70600, C71500), B111, B444 Marine Specs
- Tooling Material Grade:
- Heavy-Duty Cr12MoV / High-Speed Steel M2 / Tungsten Carbide
- Hardness & Surface Finish:
- 62+ HRC Vacuum Hardened | Anti-Galling Mirror Polish (Ra < 0.15 μm)
- Precision Tolerance:
- ±0.005mm (±0.0002") Pitch & Profile Accuracy
- Application:
- Desalination Plants, Naval Condensers & Marine Heat Exchangers
Applicable StandardsASTM / ASME B359, SB359, B111, B444, DIN EN 12451
Tooling Material GradesCr12MoV, D2, SKD11, High-Speed Steel M2, Carbide
Precision Tolerance±0.005 mm (±0.0002 in) Ground Finish
Compatible TubingCopper (C70600, C71500), Stainless Steel, Aluminum
Technical Specifications
Engineering for High-Toughness Alloys
Rolling Copper-Nickel alloys generates significantly more heat and friction than pure copper. Nexmek blades are engineered with a specialized edge-angle that reduces the radial load while ensuring deep, clean penetration into the harder material matrix.
- Enhanced thermal stability for high-speed marine finning
- Proprietary vacuum heat treatment for a 62+ HRC core
- Micro-ground profiles to minimize material stress on C70600 & C71500
Tooling Performance by Material Grade
Our Cu-Ni series blades are tested against the industry's most demanding alloy specifications to ensure longevity.
| Material Grade (Standard) | Base Hardness | Rolling Friction & Difficulty | Tool Life & Tolerance Rating |
|---|---|---|---|
| C12200 (Pure Cu) | Soft (HV 60-80) | Low Friction | Standard Life (±0.02mm) |
| C70600 (90/10 Cu-Ni / SB359) | Medium (HV 110-140) | Moderate Galling Risk | High Performance (±0.005mm / ±0.0002") |
| C71500 (70/30 Cu-Ni / Alloy 715) | Hard (HV 150-180) | High Radial Friction | Heavy-Duty Rated (±0.005mm / ±0.0002") |
Marine & Offshore Excellence
Cu-Ni finned tubes are the industry standard for seawater-cooled systems. Nexmek provides the precision tooling necessary to manufacture high-reliability components for desalination plants, naval condensers, and offshore platform heat exchangers, where failure is not an option.