Oct 28, 2025 Leave a message

ASTM B111 Copper Alloy 687 (C68700) Aluminum Brass for Heat exchangers

GNEE can provide the form

UNS C68700 Copper Plate

C68700 Copper Metal Foil

Solid C68700 Copper Earth Rod

Flexible C68700 Copper Pipe

C68700 Copper Flexible Cable

 

Products Description

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

 

Hollow Thin Wall Copper TubeType K/L/M Copper Tube

 

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%

 

Industry Applications

Heat exchangers

Evaporators

Distiller

Marine

Chemical processing

Aerospace

Defense

 

Products provided by GNEE

Product Category Standard & Material Available Forms Thickness / Diameter Range Width / OD Range Length / Form Temper / State Surface Finish
Copper Sheet & Plate ASTM B152, B187
Pure Copper (C11000)
Phosphor Bronze, Brass
• Coil
• Sheet
• Plate
Sheet: 0.3 mm - 10.0 mm
Plate: 10.0 mm - 100 mm
100 mm - 2500 mm Coil: Custom
Sheet/Plate: 1000mm - 6000mm or Custom
• O (Soft Annealed)
• H02 (Half-Hard)
• H04 (Hard)
• H08 (Full-Hard)
• Mill (Bare)
• Clad
• Brushed
• Coated
Copper Rod & Bar ASTM B133, B187
Pure Copper, Tellurium Copper
Brass, Bronze
• Round Rod
• Square Bar
• Hexagonal Bar
• Flat Bar
Rod Dia.: 2.0 mm - 300 mm
Flat Bar Thk.: 3 mm - 50 mm
Flat Bar Width: 10 mm - 400 mm Straight: 1000mm - 6000mm
Coil (for small dia.)
• Annealed (Soft)
• Half-Hard
• Hard
• As Drawn
• Drawn (Smooth)
• Turned (Peeled)
• Ground (Polished)
Copper Wire ASTM B1, B3
Bare Copper, Tinned Copper
• Bare Wire
• Tinned Wire
• Stranded Wire
• Braided Wire
Solid Wire: 0.05 mm - 10.0 mm
Stranded: Custom (e.g., 7/0.2mm)
- Coil, Spool, Reel
Weight: Custom (e.g., 5kg, 25kg)
• Soft (Annealed)
• Hard Drawn
• Medium-Hard
• Bright Bare
• Electrotinned
• Oxidized-Resistant
Copper Tube & Pipe ASTM B75, B88
Seamless, Welded
DHP Copper (C12200)
• Straight Tube
• Coiled Tube
• Capillary Tube
• Square Tube
OD: 3 mm - 300 mm
Wall Thk.: 0.5 mm - 10.0 mm
- Straight: 1000mm - 8000mm
Coil: Custom Length
• Annealed (Soft, Bendable)
• Hard Drawn (Straight)
• Bare (Clean)
• Polished
• Plastic Capped
Copper Foil ASTM B370
Rolled Annealed (RA)
Electrodeposited (ED)
• Roll / Coil
• Strip
Thickness: 0.01 mm - 0.50 mm
(10 µm - 500 µm)
10 mm - 1300 mm Coil: Custom Length • As Rolled (Hard)
• Annealed (Soft, Ductile)
• Laminated
• Standard (One Side Bright)
• Double Side Bright
• Treated (for PCB)

 

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