Copper Nickel material center
Copper-nickel components for seawater and marine systems.
Compare 90/10 and 70/30 copper-nickel material routes for flanges, fittings, and valves, with flow, seawater quality, galvanic control, and joining requirements included in the RFQ.
- ASTM / ASMESpecification-led supply
- 2 grade routesOne focused source
- Global projectsExport documentation
Product routes
Start with the component. Then lock the material.
These links use the existing catalog structure. No additional material-by-product taxonomy archives are created.
Flanges
Weld neck, blind, slip-on, threaded, lap joint, and socket weld flange routes.
Browse flanges 02Pipe fittings
Elbows, tees, reducers, and end caps for welded or specified piping systems.
Browse pipe fittings 03Valves
Ball, gate, globe, check, and butterfly valve routes for process service.
Browse valvesGrade selector
Copper Nickel grade routes.
Use the cards to build a shortlist. Final suitability remains an engineering and code decision.
Copper Nickel 90/10
UNS C70600 / C70620
The established 90Cu-10Ni family for seawater piping, heat-transfer, and marine utility applications.
Copper Nickel 70/30
UNS C71500 / C71520
A higher-nickel copper-nickel family considered for more demanding seawater velocities, mechanical loads, and marine environments.
90/10 copper nickel, typically UNS C70600, is the common general marine route. 70/30, typically UNS C71500, provides higher nickel content and is selected for more demanding flow, seawater, or mechanical conditions after system review.
Procurement comparison
Translate the material name into order data.
The same commercial alloy name can map to different forging, fitting, and casting designations. State the complete material and product-form specification.
| Grade | Selection cue | Typical project context | Procurement control |
|---|---|---|---|
| Copper Nickel 90/10 | General marine service | Shipboard piping, seawater cooling, desalination, firewater, and offshore utility systems. | Confirm wrought or welding-modified UNS, temper, wall thickness, joining method, flow design, and galvanic isolation. |
| Copper Nickel 70/30 | More demanding seawater duty | Condenser and heat-exchanger systems, naval applications, offshore systems, and demanding seawater service. | State UNS grade, welding-modified grade where relevant, product form, temper, NDE, and project seawater design criteria. |
Engineering note: This page supports early-stage procurement. The responsible engineer must verify corrosion, pressure, temperature, fabrication, compatibility, and code requirements.
RFQ readiness
Five controls for a comparable quotation.
A precise technical basis prevents substitutions and makes supplier offers easier to compare.
Send your requirement to SASA FLANGE- 01Component and quantity
Product type, size range, quantity, facing or end connection, and dimensional standard.
- 02Exact material route
ASTM specification, grade, UNS number where applicable, product form, and heat-treatment condition.
- 03Design conditions
Fluid, concentration, contaminants, design pressure and temperature, minimum metal temperature, and operating cycle.
- 04Fabrication controls
Welding, post-weld heat treatment, hardness, cleanliness, pickling or passivation, and repair restrictions.
- 05Inspection and records
Material certificates, PMI, NDE, pressure testing, corrosion tests, traceability, marking, and third-party inspection.
Standards map
Start with the governing product standard.
Official standards define scope and requirements. The purchase order should name the applicable edition required by the project.
Copper-nickel rod and bar, including UNS C70600 and C71500 families.
Pipe and tubeASTM B466/B466MSeamless copper-nickel pipe and tube for engineering applications.
ForgingsASTM B283/B283MHot-pressed copper-alloy die forgings, including welding-modified copper-nickel grades.
Technical FAQ
Direct answers for early material screening.
Structured for buyers, engineers, search engines, and future answer-engine retrieval.
What is Copper Nickel?
Copper-nickel alloys are widely evaluated for seawater and marine service because of their characteristic corrosion and biofouling behavior. Performance depends on alloy, flow velocity, water chemistry, commissioning, deposits, galvanic coupling, and fabrication quality.
How do I choose between the listed Copper Nickel grades?
90/10 copper nickel, typically UNS C70600, is the common general marine route. 70/30, typically UNS C71500, provides higher nickel content and is selected for more demanding flow, seawater, or mechanical conditions after system review.
Can the same alloy designation be used for flanges, fittings, and valves?
The same alloy family can be used across a pressure system, but the ASTM grade designation can change with product form and manufacturing route. Confirm the forging, wrought-fitting, or casting specification together with the dimensional standard and pressure rating.
What should a Copper Nickel RFQ include?
Include component type, exact grade and UNS where applicable, ASTM product specification, size, schedule or bore, pressure class, facing or end connection, quantity, service conditions, heat treatment, testing, certification, marking, and inspection requirements.
Does the material standard also define flange, fitting, or valve dimensions?
Usually not. The purchase specification normally combines a material standard with a dimensional or pressure-rating standard such as ASME B16.5, B16.9, B16.11, B16.34, an EN or DIN standard, or a project-specific specification.
Procurement support
Turn the material shortlist into a controlled RFQ.
Send your component list, service conditions, project standards, and inspection requirements for a specification-led quotation.