Copper-Nickel-TinBeryllium-freeIn production
Niclal 725
CuNi9Sn2
Niclal 725 is a copper-nickel-tin strip alloy that offers a good compromise between elasticity and conductivity. It is used for connectors, sensors and automation components that are bent or deep drawn.
230–600 MPaYield strength
380–650 MPaTensile strength
0–35 %Elongation
11 %IACSEl. conductivity
Specify this grade
Qualification packs are released after a short form. Export control applies.
Properties
Guaranteed values, by temper.
- Alloy family
- Copper-Nickel-Tin
- Chemistry family
- CuNiSn
- Lead-free
- Yes
Forms
Forms & dimensions available
Strips11 variant(s)
Dimensional ranges and tolerances on request — machining and finishing are in house.
Standards
Standards & equivalences
- CW351H
Product and process qualifications are listed above. Customer approvals are confidential and are not disclosed.
Applications
Markets & applications
Applications
- Connectors
- Sensors
- Household appliance parts
- Mechatronics and automation components
Why this grade
Good compromise between elasticity and electrical conductivity
Suited to deep drawing, bending and slitting
Excellent fatigue resistance and low friction
Good corrosion resistance
Alternatives
If this grade is not the right trade-off.
GradeChemistryYield strengthChoose it when
Niclal 725You are hereCuNiSn600 MPaChoose it when a connector or sensor part is bent or deep drawn from strip, and a balance of elasticity and conductivity matters more than the strength of Niclafor 1000.
DeclaforCuNiSnTe850 MPaChoose it when a precision part is machined from rod and its finish matters, since Declafor is the grade of the family with a tellurium addition for machining and polishing.
HardiallCuNiSn1,250 MPaChoose it when a bearing or bushing machined from bar or hollow bar must be compliant with AMS 4596, AMS 4597 or AMS 4598. It also offers the widest choice of tempers in the family.
Hardiall EcoCuNiSn724 MPaChoose it when a bushing or bearing machined from bar needs the wear behaviour of the Hardiall range and no aerospace specification applies to the part.
Niclafor 1000CuNiSn1,100 MPaChoose it when a contact, spring or shield is stamped or formed from strip or wire and needs more strength than Niclal 725 offers, compliant with ASTM B740.