NS30
A wrought copper-nickel-silicon alloy (CuNi7Si2Cr1) combining high thermal dissipation with high strength, shock resistance and corrosion resistance, beryllium- and lead-free, it is a direct substitute for CuBe2 beryllium copper.
✓ Lead-free · Beryllium-free · REACH / RoHSConductivity + strength
High thermal conductivity together with elevated mechanical strength, efficiency and reliability in one alloy.
Wear & galling resistant
Exceptionally resistant to metal-to-metal wear, galling and softening; corrosion resistant.
Beryllium-free CuBe2 substitute
A direct, environmentally friendly replacement for CuBe2 (C17200), no beryllium, no lead.
Readily machined
Easily machined into complex components for tooling and automotive parts.
Lower total cost of ownership
Longer service life and better TCO than beryllium copper and other copper-based alloys.
Copper-Nickel-Silicon Alloys.
NS30 (CuNi7Si2Cr1) is a wrought copper-nickel-silicon alloy designed for applications requiring a combination of high thermal dissipation, high strength, resistance to shock and corrosion resistance. It is exceptionally resistant to metal-to-metal wear, galling and softening.
Beryllium-free and lead-free (REACH / RoHS compliant), NS30 is a direct substitute for CuBe2 beryllium copper (C17200): its superior thermal conductivity and elevated mechanical strength give designers both efficiency and reliability, with a longer service life and a better total cost of ownership.
Minimum guaranteed properties.
| Grade / spec | Form | Tensile (ksi) | Yield 0.2% (ksi) | Elong. (%) | Hardness (HB) | Hardness (HRC) | Compliant with |
|---|---|---|---|---|---|---|---|
| TER | Bars | 131 ksi | 116 ksi | 7 | 270 | 26 | — |
| TR | Bars | 116 ksi | 102 ksi | 5 | 250 | 25 | — |
Data for information only, non-contractual. Request a certified datasheet for design allowables.
Physical properties
| Density | 8.7 g/cm³ |
| Electrical conductivity | 30 %IACS |
| Thermal conductivity | 135 W/m·K |
| Young's modulus | 130 GPa |
| Thermal expansion | 16 ×10⁻⁶/K |
| Magnetic permeability | 1.01 |
| Machinability index | n/a |
| NACE corrosion rating | n/a |
Norms & designations.
Designations
- CuNi7Si2Cr1 (Cu-Ni-Si-Cr)
- Lebronze Alloys grade
- CuBe2 / C17200 substitute
Forms & applications.
Bars
Round bar, Ø 12.7–127 mm (0.50″–5″).
Plates
Plate, 12.7–250 mm (0.50″–10″) thick.
Valve seats, guides & bushings
Valve seats, guides, liners, bearings and bushings, including racing valve-train components.
Mould inserts & hot-runner parts
Mould inserts for injection and blow moulding; hot-runner nozzles and manifolds.
Welding & die-casting tooling
Welding shanks and wheels; die-casting plunger tips and pistons.
Beryllium-copper performance, without the beryllium
NS30 matches CuBe2 where it counts (strength, wear resistance and heat removal) while removing beryllium and lead from your supply chain and lowering total cost of ownership.