ASTM B111 C71500 Copper Nickel Tubes
What is C71500 copper?
C71500 copper, also known as copper-nickel alloy 70/30, is an alloy containing 70% copper and 30% nickel, renowned for its excellent resistance to seawater corrosion and high-temperature oxidation. This alloy is widely used in shipbuilding, offshore operations, and power plants. GNEE supplies C71500 copper products, including plates, pipes, bars, angle steel, channel steel, profiles, and fittings, all meeting high standards of durability and performance.
What is C71500 material equivalent to?
C71500 (Nickel Silver) has the following material equivalents across international standards:
ASTM Standards: B127 (UNS C71500)
Common Designations:
B30 (USA UNS Number)
CuNi30 (Europe EN Standard)
NiCu30Fe1Mn (Germany DIN Standard)
Similar Alloys:
C70600 (Lower nickel content, slightly reduced corrosion resistance)
C71500 Copper Nickel Sizing
Round Bar (1/2" dia to 10-1/8")
Plate (3/16" thick to 2-5/8")
Sheet/Strip (.065", .125")
Tube (3/8" OD to 1")
Pipe (1/4" Standard (sch 40) to 12") (1/4" Extra Heavy (sch 80) to 4") (1/2" Class 200 Mil-T-16420 K to 12)
Fittings (Threaded and Socketweld Fittings, 3000#/6000#) (C96400 400# Socketweld Fittings)
Flanges (Slip-on, threaded, blind, Weldneck Flanges)
Chemical Composition
The following table shows the chemical composition of UNS C71500 cupronickel alloy.
| Element | Content (%) |
|---|---|
| Copper, Cu | 70 |
| Nickel, Ni | 30 |
Physical Properties
The physical properties of UNS C71500 cupronickel alloy are outlined in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.94 g/cm3 | 0.323 lb/in3 |
| Melting point | 1171°C | 2140°F |
Mechanical Properties
The mechanical properties of UNS C71500 cupronickel alloy are tabulated below.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 372-517 MPa | 54000-75000 psi |
| Yield strength (depending on temper) | 88.0-483 MPa | 12800-70100 psi |
| Elongation at break (in 381 mm) | 45% | 45% |
| Elastic modulus | 117 GPa | 17000 ksi |
| Poisson's ratio | 0.34 | 0.34 |
| Machinability (UNS C36000 (free-cutting brass) = 100) | 20 | 20 |
| Shear modulus | 57.0 GPa | 8270 ksi |
Product Applications
1. Marine Engineering: Seawater cooler pipes, ship propellers, offshore platform components.
2. Chemical Equipment: Distillation towers, reactors, heat exchanger sleeves.
3. Power Industry: Nuclear plant condensers, heat exchangers.
4. Aerospace: Engine components, hydraulic system pipelines.
Product Forms We Can Provide
| Product Category | Material Standards | Common Alloys | Key Specifications (Can be Customized) |
|---|---|---|---|
| Copper Tubes | ASTM B75, B88, B280,B111; EN 12449, 12451; DIN EN 12735; JIS H3300 | C10100 (OFE), C11000 (ETP), C12200 (DHP), C23000, C70600,C71500 | OD: 3mm - 300mm Wall Thickness: 0.5mm - 20mm Temper: Soft (O), Half-Hard (H50), Hard (H80) Form: Straight Lengths, Coils, U-Bends |
| Copper Sheets / Plates | ASTM B152, B248, B248M; EN 1652; DIN 1787; JIS H3100, H3250 | C10100 (OFE), C11000, C10200 (OF), C26000, C86200 | Thickness: 0.3mm - 100mm Width: Up to 1200mm Length: Up to 3000mm (or coils) Surface: Mill, Polished, Brushed |
| Copper Rods / Bars | ASTM B187, B301, B411; EN 12163, 12164; DIN 17672; JIS H3250 | C10100 (OFE), C11000, C14500, C36000, C63000 | Diameter/Rect. Size: 3mm - 300mm Shape: Round, Square, Hexagonal, Rectangular Condition: Drawn, Extruded, Hot Rolled |
| Copper Wires | ASTM B1, B2, B3, B258; EN 13601; IEC 60228; JIS H3100 | C10100 (OFE), C11000, C14420, C14500 | Diameter: 0.1mm - 20mm Temper: Soft, Annealed, Hard-Drawn Form: Bare, Tinned, Stranded, on Spools |
| Copper Foils / Strips | ASTM B103, B370; EN 1652; DIN 1787; JIS H3100 | C10100 (OFE), C10200, C11000, C19400, C26800 | Thickness: 0.02mm - 2.0mm Width: Up to 600mm Temper: Rolled, Annealed |
| CNC Machining Parts | As per Customer Drawing/Req. | All Common Copper Alloys (including C10100, C11000, C86200, etc.) | Process: Turning, Milling, Drilling, Tapping Tolerance: ±0.005mm - ±0.1mm Post-Processing: Deburring, Polishing, Plating |
Our factory
Our manufacturing facility operates a comprehensive and modern production line, equipped with advanced continuous casting, precision rolling, high-speed drawing, and multi-axis CNC machining centers, enabling us to process copper and copper alloys (such as C10100, C11000, C12200, C71500,C70600 etc.) into a full range of products including tubes, sheets, rods, wires, and foils. To ensure top-tier quality, we have implemented a rigorous in-process and final inspection system, utilizing state-of-the-art equipment such as spectrometers for material verification, digital tensile testers for mechanical property checks, precision dimensional gauges, and eddy current or ultrasonic testers for defect detection, guaranteeing that every product meets or exceeds international standards such as ASTM, EN, and JIS, as well as specific customer requirements.
Pre-shipment inspection
We provide engineering-grade protective packaging for each and every product. Whether it's heavy copper tubes and plates, or precision rods, wires, and ultra-thin foils, we employ multi-layer composite protection: the inner layer uses scratch-resistant PE film and custom padding for physical isolation and cushioning; the middle layer is treated with moisture-proof sealing and includes desiccants; the outer layer utilizes reinforced wooden crates or high-strength waterproof wrapping film, depending on the shape and weight, for stabilization and protection. This ensures that the products withstand moisture, oxidation, and impact during long-distance sea or land transportation, arriving in perfect condition at your site. In terms of delivery, we commit to efficiency and reliability: standard specification products can be prepared and shipped within 7-15 working days, while customized products will also enter production scheduling promptly. We maintain full transparency throughout the process, allowing you to precisely control timelines and ensure your project proceeds as planned.
