Copper Alloy 687 (C68700)
Aluminum Brass, Arsenical Tubing
Alloy C687 tubing, also known as Aluminum Brass, is a high-strength copper-zinc-aluminum alloy with added arsenic to enhance corrosion resistance. This alloy is ideal for seawater, brackish water, and biofouling environments.
C687 Copper Alloy Designations
- UNS Number: C68700
- CDA Number: 687
- EN Number: CW702R
- EN Symbol: CuZn20Al2As
Chemical Composition:
- Copper (Cu): 76.00 – 79.00%
- Iron max (Fe): 0.60%
- Lead max (Pb): 0.07%
- Zinc (Zn): 21.00%
- Arsenic (As): 0.20 – 0.06%
- Aluminum (Al): 1.80 – 2.50%
Custom Engineered Shapes and Custom Fabricated Parts are available on request.
Forms Available:
Straight Lengths available upon request.
Note: This is not a stock alloy but is available upon request with a minimum order quantity.
Equivalent Standards
Please reach out if you have a specific material specification you need us to review.
Industry Applications
Thermal
- Heat exchangers
- Evaporators
- Distiller
- Marine
- Chemical processing
- Aerospace
- Defense
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