Cupro Nickel 70/30 (UNS C71500) Sheets & Plates to ASTM B122
70/30 cupro-nickel (UNS C71500, DIN 2.0882, CuNi30Mn1Fe) contains about 70% copper and 30% nickel, with small additions of iron and manganese. It is the strongest and most corrosion-resistant of the common cupro-nickel grades.
Table of Content
- What is Cupro Nickel 70/30 Sheets & Plates
- Cupro Nickel 70/30 Sheets / Plates Equivalent Grades
- Standard Specification For Cupro Nickel 70/30 Sheets, Plates
- Types Of Grade 70/30 Cupro Nickel Sheets & Plates
- Chemical Composition of Cupro Nickel 70-30 Sheets / Plates
- Mechanical Properties of Cupro Nickel 70/30 Sheets, Plates
- Available Forms
- Application for Cupro Nickel 70/30 Sheets, Plates
- Export Destinations for Cupro Nickel 70/30 Sheets / Plates
Properties and Uses of Cupro Nickel 70/30 Sheets & Plates
70/30 cupro-nickel withstands higher seawater velocities and erosion than 90/10, and has good resistance to stress-corrosion cracking and to impingement attack.
Where not to use it: Avoid sulphide-polluted seawater. 70/30 costs more than 90/10, so for most seawater piping at normal velocities 90/10 cupro-nickel is sufficient.
Testing, Documentation and Packaging
Every lot of Cupro Nickel 70/30 sheets & plates is inspected before dispatch. Typical tests include chemical analysis / PMI, tensile and hardness testing, bend testing, ultrasonic testing of plates where required, and checks of thickness and flatness. Third-party inspection can be arranged on request.
Material is supplied with a mill test certificate to EN 10204 3.1, together with the raw-material report and inspection reports. For export orders it is interleaved with protective paper and packed on fumigated wooden pallets or in wooden cases, with a fumigation certificate included.
Equivalent Grades