Cupro Nickel 90/10 Forgings
Metracore Alloys is a manufacturer and supplier of cupro nickel 90/10 forgings. We stock the following seven product families: rings, shafts, bushings, sleeves, discs, blocks, and custom shapes to drawing. Material selection support comes with every enquiry; our technical team reviews duty conditions with the buyer and advises on grade choices across our wider industrial range, not just the alloy on this page.
UNS C70600 is built on a nominal 90% copper and 10% nickel split, with iron and manganese added in controlled amounts to toughen the protective surface film. The chemistry conforms to the C70600 composition limits common to ASTM B151, B171, and B466. In seawater, the grade resists corrosion and erosion while its surface prevents marine growth, and that combination makes it an approved material for shipbuilding and desalination. Thermal conductivity remains high enough for condenser and heat-exchanger duty.
Forgings leave our works hot forged and annealed, supplied rough or proof-machined, from small bushings up to heavy rings and blocks sized against customer drawings. Machinability and weldability are both good, so downstream fabrication stays simple. Send a drawing with duty data for a firm quotation.
What Are Cupro Nickel 90/10 Forgings?
Cupro Nickel 90/10 forgings (CuNi10Fe1Mn) are high-strength alloy components shaped under compressive force, annealed, and machined. Containing 9.0–11.0% nickel and 1.0–1.8% iron, the alloy’s forged grain flow provides superior density, impact strength, and fatigue resistance compared to castings. With a minimum tensile strength of 275 MPa and 30% elongation, thinner sections can be safely used.
In saltwater, it rapidly forms a self-healing cuprous oxide film that naturally inhibits biofouling and keeps corrosion rates low and predictable, ensuring decades of reliable service in continuous marine applications.
Why Choose Metracore Alloys?
Metracore Alloys manufactures premium copper-nickel forging solutions through precision open-die work and fully custom scope. Components are forged to customer drawings, then finished on our advanced machining line to the tolerances the drawing calls for. Buyers may appoint a third-party inspection agency to witness testing, and each consignment ships with an EN 10204 3.1 Mill Test Certificate. Export-grade packaging protects machined surfaces in transit. Despatch dates agreed at order stage are held, and our on-time delivery record spans customers worldwide. Engineers stay available after the quotation for queries or doubt.
- Cupro Nickel 90/10 Forgings Specification
- Types of Cupro Nickel 90/10 Forgings
- Technical Details of Cupro Nickel 90/10 Forgings
- Equivalent Grades of Cupro Nickel 90/10 Forgings
- Cupro Nickel 90/10 Forgings Chemical Composition
- Cupro Nickel 90/10 Forgings Mechanical Properties
- Manufacturing Process of Cupro Nickel 90/10 Forgings
- Cupro Nickel 90/10 Forgings Application
Cupro Nickel 90/10 Forgings Specifications
ASTM Specification
ASTM B151; related product standards ASTM B171, ASTM B466, ASTM B122
UNS Number
C70600
Sizes in Stock
50 mm to 2,000 mm diameter; custom dimensions to drawings
Manufacturing Process
Open die forging, ring rolling, and closed die forging, followed by machining
Form
Rings, flanges, shafts, bushings, sleeves, discs, valve and pump components
Tolerance
As per applicable ASTM standard or customer drawing
Testing Standard
Chemical analysis, mechanical testing, ultrasonic testing, dimensional, surface finish, and visual checks
Certification
EN 10204 3.1 Mill Test Certificate
Types of Cupro Nickel 90/10 Forgings
Forged Rings
Forged Bushings
Forged Shafts
Forged Blocks
Forged Discs
Forged Sleeves
Forged Flanges
Forged Hubs
Open Die Forgings
Custom Closed Die Forgings
Reach out to Metracore Alloys for reliable Cupro Nickel 90/10 Forgings solutions.
Technical Details of Cupro Nickel 90/10 Forgings
Chemical Composition
| Element | Composition (%) |
|---|---|
| Copper (Cu) | 86.5 min (balance) |
| Nickel (Ni) | 9.0-11.0 |
| Iron (Fe) | 1.0-1.8 |
| Manganese (Mn) | 1.00 max |
| Carbon (C) | 0.050 max |
| Lead (Pb) | 0.05 max |
| Zinc (Zn) | 1.0 max |
Mechanical & Physical Properties
| Property | Value |
|---|---|
| Tensile Strength | 275 MPa min (40 ksi) |
| Yield Strength (0.5% extension) | 105 MPa min (15 ksi) |
| Elongation | 30% min |
| Hardness | 72 HRB typical (annealed condition) |
| Density | 8.94 g/cm³ |
| Thermal Conductivity | 40 W/m·K at 20°C |
Key Features
Six main features drive purchasing decisions for Copper Nickel 90/10 forgings, all stemming directly from the alloy’s chemistry.
- Seawater corrosion resistance. The iron-reinforced oxide film holds metal loss to low, predictable rates in flowing seawater, and it re-forms wherever service damages it.
- Marine organisms struggle to attach to the surface, so biofouling resistance lasts for the life of the component rather than the life of a coating.
- Erosion-corrosion resistance protects parts in turbulent, sediment-carrying flow, the exact condition that strips protective films from plain copper alloys.
- Heat moves through a forged section at the alloy’s 40 W/m·K conductivity. Tube sheets and covers therefore support exchanger duty instead of throttling it.
- Saltwater systems built on the grade log decades between overhauls; condenser plants running copper-nickel hardware installed 30 years ago aren’t unusual.
- Low maintenance requirements follow from all of the above: no coatings to renew, no dedicated anodes, no fouling to clear.
Inspection & Manufacturing Standards
Production at our works follows five reference documents. Forging stock is supplied to ASTM B151, the rod and bar specification for copper-nickel alloys, while finished forgings are produced to ASTM B283 or to the customer’s nominated specification. ASTM B171 governs plate for tube sheet work, ASTM B466 covers the seamless pipe that forged parts connect into, and ASTM B122 applies to sheet and plate products. Orders placed for ASTM B151 cupro nickel 90/10 forgings ship with EN 10204 3.1 certification that identifies the source heat. Inspection runs in sequence: chemical analysis confirms the melt, mechanical testing proves strength on heat samples, ultrasonic testing screens internal soundness, and dimensional, surface finish, and visual examinations clear each piece for despatch.
Advantages of Cupro Nickel 90/10 Forgings
Standardizing on forged 90/10 hardware delivers significant long-term value, where the true return on investment is realized through reduced total cost of ownership rather than initial purchase price.
- Durability in seawater shows in fleet and plant service records reaching back generations.
- Corrosion and erosion resistance improve on castings because the forged structure carries no porosity.
- Continuous service holds fewer surprises because forged grain flow resists fatigue cracking.
- Long equipment life defers replacement capital by years.
- Maintenance budgets shrink because no coatings, linings, or anodes need servicing.
- Whole-life economics favour the alloy in marine duty despite its higher initial metal price.
Manufacturing Process of Cupro Nickel 90/10 Forgings
Cupro Nickel 90/10 Forgings Application
Products
Exporter, Manufacturer & Supplier of Cupro Nickel 90/10 Forgings in various grades, sizes, shapes and specifications.
FAQs
What Are Cupro Nickel 90/10 Forgings?
Cupro Nickel 90/10 Forgings are UNS C70600 components shaped by hot forging: rings, shafts, bushings, sleeves, discs, and blocks for seawater service.
What Are the Advantages of Cupro Nickel 90/10 Forgings?
Forged grain flow adds fatigue strength, while the alloy itself resists seawater corrosion, erosion, and biofouling, holding maintenance low across decades of service.
Which Standards Are Followed for Cupro Nickel 90/10 Forgings?
ASTM B283 covers copper-alloy forgings, with ASTM B151 applying to the rod and bar starting stock. Related product forms follow ASTM B171, B466, and B122, with certification to EN 10204 3.1.
What Types of Cupro Nickel 90/10 Forgings Do You Manufacture?
We manufacture forged rings, shafts, bushings, sleeves, discs, and blocks. Custom shapes get forged against customer drawings to agreed tolerances.
Are Cupro Nickel 90/10 Forgings Suitable for Seawater Applications?
Yes. The grade exists for seawater duty and resists corrosion, erosion, and marine growth in flowing and static brine alike.
Which Industries Commonly Use Cupro Nickel 90/10 Forgings?
Shipbuilding tops the order book for these forgings. Offshore oil and gas, desalination, power generation, heat exchanger manufacturing, and coastal process facilities follow.
Can You Manufacture Custom Cupro Nickel 90/10 Forgings as per Drawings?
Yes, send the drawing and duty conditions; our engineers confirm forgeability, agree tolerances, and quote the nearest practical forged envelope.
Do You Provide Mill Test Certificates and Third-Party Inspection?
Yes, an EN 10204 3.1 certificate accompanies each consignment, and inspectors nominated by the buyer can witness testing at our works before despatch.