Copper-Nickel-SiliconBeryllium-freeIn production
NS30
CuNi7Si2Cr1
NS30 is a CuNi7Si2Cr bar grade that combines high strength with high thermal conductivity. Engine builders and mould makers use it for valve seats, valve guides and mould inserts that must shed heat while resisting wear.
700–800 MPaYield strength
800–900 MPaTensile strength
5–7 %Elongation
250–270 HBHardness HB
Specify this grade
Qualification packs are released after a short form. Export control applies.
Properties
Guaranteed values, by temper.
- Alloy family
- Copper-Nickel-Silicon
- Chemistry family
- CuNiSiCr
- Lead-free
- Yes
Forms
Forms & dimensions available
Bars4 variant(s)
Dimensional ranges and tolerances on request — machining and finishing are in house.
Applications
Markets & applications
Applications
- Valve seats, valve guides and liners for fuel-efficient engines
- Bearings, bushings and valvetrain parts for racing cars
- Mould inserts for injection and blow moulding
- Manifolds for hot runner systems
- Plunger tips and pistons for high pressure die casting
Why this grade
High strength together with high thermal conductivity, the combination the grade is designed for.
Wear and galling resistance for sliding parts such as valve guides and bushings.
Non-sparking, with low magnetic permeability.
Keeps its properties and dimensions at elevated service temperatures.
Alternatives
If this grade is not the right trade-off.
GradeChemistryYield strengthChoose it when
NS30You are hereCuNiSiCr800 MPaChoose it when strength and heat dissipation come first, as in valve seats or mould inserts, and the part needs less electrical conductivity than NS6 or NS5 provide.
NS5CuNiSi590 MPaChoose it when the part must comply with CW111C, 2.0855, DTD 498 or NFL 14701, or works near seawater, and NS30's higher strength is not needed.
NS6CuNiSi590 MPaChoose it when the bar becomes resistance welding parts or electrodes, where RWMA Class 3 and conductivity matter more than the strength of NS30 or the standards covered by NS5.
NS8CuNiSiCr
Siclanic FCuNiSi
Siclanic MCuNiSi
Siclanic SCuNiSi590 MPaChoose it when the part is stamped or bent from strip, such as a contact blade or relay spring, where NS30, NS5 and NS6 are supplied as bars.