C68700 Aluminum Brass Tube PDF
Products Description
GNEE, a leading exporter of heat exchanger tubes with over 19 years of experience and operations in more than 80 countries worldwide, is proud to introduce its C68700 seamless copper alloy tubes. Our tubes are manufactured strictly according to ASTM B111 standards and are SGS certified, ensuring superior quality and reliability.
These tubes are designed for demanding heat exchanger applications, offering excellent corrosion resistance, high thermal conductivity, and outstanding durability. GNEE focuses on precision manufacturing, and its copper alloy tubes are trusted by industries worldwide.
Material Properties
**Superior Seawater Corrosion Resistance:** A core advantage. The dense aluminum oxide film provides strong protection, resulting in excellent performance in seawater, brackish water, and marine atmospheric environments, with good resistance to erosion corrosion.
**Excellent Biofouling Resistance:** The slow release of copper ions effectively inhibits the adhesion and growth of marine organisms (such as barnacles and algae) on the inner walls of pipes and equipment, reducing maintenance requirements and maintaining heat exchange efficiency.
**Good Resistance to Zinc Dezincification:** The addition of trace amounts of arsenic (As) or tin (Sn) effectively inhibits the selective dissolution of zinc, improving durability in stagnant or brackish water environments prone to zinc dezincification.
**High Strength and Hardness:** The solid solution strengthening effect of aluminum makes its strength significantly higher than that of ordinary brass (such as Admiralty), and even higher strength (H04, H06) can be achieved through cold working.
**Excellent Thermal Conductivity:** Superior thermal conductivity compared to stainless steel and titanium alloys, making it one of the ideal materials for manufacturing high-efficiency heat exchanger tubes.
Chemical Composition:
| Designation | Chemical Composition % | ||||||||
| Cu | Sn | Al | As | Ni | Fe | Mn | Pb max. | Zn | |
| C44300 | 70.0-73.0 | 0.9-1.2 | – | 0.02-0.06 | – | 0.06 max | – | 0.07 | Rem |
| C68700 | 76.0-79.0 | – | 1.8-2.5 | 0.02-0.06 | – | 0.06 max | – | 0.07 | Rem |
| C70400 | Rem | – | – | – | 4.8-6.2 | 1.3-1.7 | 0.3-0.8 | 0.05 | 1.0max |
| C70600 | Rem | – | – | – | 9.0-11.0 | 1.0-1.8 | 1.0max | 0.05 | 1.0max |
| C71500 | Rem | – | – | – | 29.0-33.0 | 0.4-1.0 | 1.0max | 0.05 | 1.0max |
| C71640 | Rem | – | – | – | 29.0-32.0 | 1.7-2.3 | 1.5-2.5 | 0.05 | 1.0max |
ASTM SB 111 C68700 Mechanical Properties
| Copper or Copper Alloy UNS No. | Temper Designation | Annealing temperature, °C | Tensile Strength, min | Yield Strength, min | HV | |||
| Code | Name | ksi | Mpa | ksi | Mpa | |||
| C68700 | O61 | Annealed | above 650 | 50 | 345 | 18 | 125 | 150 |
Supply Forms and Application Areas
Supply Forms: Available in various forms, including extruded bars and seamless tubes.
Application Areas:
Heat Exchange Equipment: Widely used in seawater coolers, heat exchangers, and other equipment with high corrosion resistance and heat dissipation requirements, primarily as fittings for condensers, evaporators, and heat exchangers.
Aerospace and Transportation: Used for heat dissipation components in the aerospace and transportation industries.
Chemical Industry: Used in corrosion-resistant equipment and pipelines in the chemical industry.
Medical Devices: Can be used for corrosion-resistant components in medical devices.
Our inventory is in stock
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C68700 copper tube |
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C68700 brass pipe supplier |
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C68700 brass tube |
Copper alloy C68700 tube |
ASTM B111 C68700 |
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Aluminum brass C68700 tube |
C68700 heat exchanger tube |
C68700 welded tube |
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C68700 seamless tube |
UNS C68700 tube |
C68700 brass hollow bar |
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Arsenical aluminum brass tube C68700 |
C68700 copper pipe |
C68700 drawn tube |
about us
Our Product Portfolio
We supply an extensive inventory of copper products in various forms, grades, and tempers to meet your exact specifications.
1. Copper & Copper Alloy Tubes/Pipes
Type: Copper Seamless Tube, Copper Welded Tube, Capillary Tube, Refrigeration Tube, Heat Exchanger Tube, Condenser Tube, Dehydrated Tube.
Key Alloys: C10200 (OFHC Copper), C11000 (ETP Copper), C12200 (DHP Copper), C44300, C68700, C70600 (Copper Nickel 90/10), C71500 (Copper Nickel 70/30).
2. Copper & Copper Alloy Sheets/Plates
Type: Copper Sheet, Copper Plate, Copper Foil, Copper Thin Sheet, Copper Thick Plate, Embossed Sheet, Perforated Sheet.
Key Alloys: C10200, C11000, C17200 (Beryllium Copper), C26000 (Cartridge Brass), C26800, C28000 (Muntz Metal).
3. Copper & Copper Alloy Bars/Rods
Type: Copper Round Bar, Copper Square Bar, Copper Hexagonal Bar, Copper Flat Bar, Copper Wire Rod.
Key Alloys: C10100, C11000, C36000 (Free-Cutting Brass), C38500 (Architectural Bronze).
4. Copper & Copper Alloy Strips/Wires
Type: Copper Strip, Copper Coil, Copper Flat Wire, Copper Bare Wire, Copper Braided Wire, Copper Tin-Plated Wire.
Key Alloys: C11000, C26000 (Brass Strip), C51900 (Phosphor Bronze), C52100, C70400.
Quality & Standards
We guarantee that all our products comply with international and national standards, ensuring performance, reliability, and safety.
International Standards: ASTM, EN, DIN, JIS, ISO.
Common Standards: ASTM B111,ASTM B68, B75, B88, B96, B152, B187, B465.
Why Choose Us?
One-Stop Shop: A comprehensive range of copper products simplifies your sourcing.
Quality Assured: Rigorous inspection and material traceability.
Global Logistics: Efficient and reliable shipping to destinations worldwide.
Technical Support: Expert assistance with material selection and specification.
