ASTM B111 C68700 Aluminum Brass Tube is a special type of copper alloy tube intended for high-stress applications in environments that require corrosion resistance and dimensional stability. It contains aluminum and arsenic, which enhance resistance to dezincification, erosion-corrosion and impingement attack, so the tubes can operate effectively in high velocity water flow conditions. C68700 tubes are typically available in seamless and cold drawn tubes with controlled dimensions, consistent wall thickness and appropriate surface finishes. It offers an effective combination of mechanical properties, corrosion resistance, and service life. Tubes can be produced and provided with varying outside diameters, wall thickness, tempers and lengths as specified by project requirements. USA Piping Solution produces and delivers C68700 Aluminum Brass Tubes from ASTM B111 that are material certified, traceable and dimensionally customized to meet challenging industrial needs.
Specifications of ASTM B111 C68700 Aluminum Brass Tube
| Specification Category | Parameter / Detail |
|---|---|
| Material Grade | C68700 (Aluminum Brass) |
| Applicable Standards | ASTM B111, BS 2871 CZ110, DIN 1785 |
| Manufacturing Method | Seamless Drawn |
| Temper Conditions | O60 / F34 (Annealed), H55 (Drawn) |
| Dezincification Inhibitor | Arsenic (As): 0.02% – 0.06% |
| Max Cooling Water Velocity | Up to 3.5 m/s (Seawater Service) |
| Max Operating Temperature | 200°C (Continuous Service) |
| Suitable Cooling Media | Seawater, Brackish Water, River Water |
| Surface Finish Options | Bright Annealed, Pickled & Oiled |
| Tube End Options | Plain, Bevelled, or Capped |
| Product Variants | Heavy Wall Pipes, Straight Tubes, U-Bent Tubes |
| Primary Applications | Seawater Condensers, Shell & Tube Heat Exchangers, Marine Power Plants |
Applications and Industrial Uses of ASTM B111 C68700 Aluminum Brass Tube
- Coastal & Marine Power Station Condensers
- Desalination Plants (MSF & RO)
- Shipboard Heat Exchangers & Marine Cooling
- Oil Refineries & Petrochemical Coolers
- Marine Ballast & Bilge Piping Systems
- Industrial Refrigeration & HVAC Chillers
- Chemical Evaporators & Distillation Units
- Air Compressor Intercoolers & Aftercoolers
Frequently Asked Questions
What is ASTM B111 C68700 Aluminum Brass Tube?
ASTM B111 C68700 is an aluminum brass copper alloy tube used for reliable corrosion resistance and heat-transfer performance.
What is ASTM B111 C68700 used for?
It is used for condensers, heat exchangers, cooling systems, desalination equipment, and marine applications.
Is C68700 Aluminum Brass suitable for seawater?
Yes. C68700 provides good resistance to seawater corrosion, erosion-corrosion, and impingement attack.
Why is arsenic added to C68700?
Arsenic is added to improve resistance to dezincification and corrosion in water service.
What is the equivalent grade of C68700 Aluminum Brass?
Commonly referenced equivalents include JIS C6870, EN CW702R, and BS CZ110, depending on the applicable standard and composition.
Is C68700 the same as JIS H 3300 C6870?
Yes. C68700 and JIS H 3300 C6870 are commonly used designations for the same aluminum brass alloy family, subject to the applicable standard requirements.
Can C68700 Aluminum Brass be welded?
Yes. C68700 can be welded using suitable procedures, although the welding method should be selected based on the application and service conditions.
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USA Piping Solution supplies ASTM B111 C68700 (CuZn20Al2) aluminum brass tube for condensers and heat exchangers. Certified stock. Request a quote.