ASTM B122 CuNiSn CuNiZn CuNi Plate and Sheet
Grade: UNS C70600, C70620, C71000, C71500, C71520, C72200, C72500, C73500, C74000, C74500, C75200, C76200, or C77000
Type: CuNiSn CuNiZn CuNi Plate and Sheet
Features
ASTM B122 CuNiSn, CuNiZn & CuNi Plate and Sheet, and Strip, and Rolled Bar
Chemical Composition (wt.%) of ASTM B122 CuNiSn CuNiZn CuNi Plate and Sheet
| Alloy UNS No. | Copper (incl. Silver) | Nickel (incl. Cobalt) | Lead (max) | Iron (max) | Manganese (max) | Zinc | Tin | Chromium | Other Named Elements |
| C70600 | Remainder | 9.0–11.0 | 0.05 | 1.0–1.8 | 1 | – | – | – | – |
| C70620 | 86.5 min | 9.0–11.0 | 0.02 | 1.0–1.8 | 0.50 max | – | – | – | – |
| C71000 | Remainder | 19.0–23.0 | 0.05 | 1.0 max | 1 | – | – | – | – |
| C71500 | Remainder | 29.0–33.0 | 0.05 | 0.40–1.0 | 1 | – | – | – | – |
| C71520 | 65.0 min | 28.0–33.0 | 0.02 | 0.40–1.0 | 0.50 max | – | – | – | – |
| C72200 | Remainder | 15.0–18.0 | 0.05 | 0.50–1.0 | 1 | – | – | 0.30–0.70 | – |
| C72500 | Remainder | 8.5–10.5 | 0.05 | 0.6 | 0.2 | – | 1.8–2.8 | – | – |
| C73500 | 70.5–73.5 | 16.5–19.5 | 0.05 | 0.25 max | 0.5 | Remainder | – | – | – |
| C74000 | 69.0–73.5 | 9.0–11.0 | 0.09 | 0.25 max | 0.5 | Remainder | – | – | – |
| C74500 | 63.5–66.5 | 16.5–19.5 | 0.1 | 0.25 max | 0.5 | Remainder | – | – | – |
| C75200 | 63.5–66.5 | 16.5–19.5 | 0.09 | 0.25 max | 0.5 | Remainder | – | – | – |
| C76200 | 57.0–61.0 | 11.0–13.5 | 0.05 | 0.25 max | 0.5 | Remainder | – | – | – |
| C77000 | 53.5–56.5 | 16.5–19.5 | 0.05 | 0.25 max | 0.5 | Remainder | – | – | – |
Mechanical Properties of ASTM B122 CuNiSn CuNiZn CuNi Plate and Sheet
Alloy UNS No. C70600 (90-10 Copper-Nickel)
| Temper Designation | Tensile Strength (ksi) | Approximate Rockwell Hardness |
| M20 (As Hot-Rolled) | 40 – 62 | 52 – 70 (Superficial 30T) |
| H04 (Hard) | 71 – 83 | 67 – 74 (Superficial 30T) |
Alloy UNS No. C71500 (70-30 Copper-Nickel)
| Temper Designation | Tensile Strength (ksi) | Approximate Rockwell Hardness |
| M20 (As Hot-Rolled) | 45 – 65 | – |
| H04 (Hard) | 75 – 88 | – |
Note: The Rockwell Hardness provided is in the Superficial 30T scale for the as hot-rolled (M20) temper of C70600. The approximation is given for general guidance and may not be used as a basis for rejection or acceptance of material. For the C71500 alloy, the Rockwell Hardness values are not specified for the provided tempers in the provided data.
Technical Specifications
| Specification | Value |
| Standard | ASTM B122 CuNiSn & CuNiZn & CuNi Plate and Sheet |
| Grade | UNS C70600, C70620, C71000, C71500, C71520, C72200, C72500, C73500, C74000, C74500, C75200, C76200, or C77000 |
| Type | Plate, Sheet, Strip |
| Thickness | 1-50mm |
| Length | 1000 – 12000mm |
| Width | 500 – 2500mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical Analysis, Tensile Test, UT/ET |
Packing
Packed in plywood boxes or on pallets.
Features
- ASTM B122-compliant copper-nickel-tin, copper-nickel-zinc (nickel silver), and copper-nickel alloy plate and sheet.
- Available in UNS C70600, C70620, C71000, C71500, C71520, C72200, C72500, C73500, C74000, C74500, C75200, C76200, and C77000.
- Good corrosion resistance in seawater and marine environments.
- Excellent thermal conductivity and suitability for heat-transfer service such as condensers and heat exchangers.
- Good formability, weldability, and long service life in demanding industrial applications.
- Nickel silver grades offer a bright, silver-like appearance for decorative and architectural uses.
Applications
- Marine systems: seawater piping, cooling circuits, condensers, shipbuilding, and repair.
- Heat exchange equipment: condensers, heat exchangers, coolers, and desalination-related equipment.
- Electrical and electronics: connectors, contacts, switchgear, and conductive components.
- Automotive and transportation: brake tubing, hydraulic lines, and cooling-system components.
- Decorative and consumer products: jewelry, musical instruments, flatware, architectural trim, and ornamental parts.
- Coinage and precision components requiring durability and a bright finish.
