ASTM B111 Seamless Copper and Copper-Alloy Condenser Tube
- Grade: UNS C44300, C68700, C70400, C70620, C71000, C71500, C71520
- Outside Diameter (OD) Range: 6-50.8mm
- Wall Thickness (WT) Range: 0.4-3mm
ASTM B111/B111M Copper and Copper-Alloy Seamless Condenser Tube
ASTM B111 Seamless Copper and Copper Alloy Condenser Tube is a trusted solution for heat transfer systems that require excellent thermal conductivity, corrosion resistance, and dependable long-term performance. Manufactured in accordance with ASTM B111, this seamless condenser tube is widely used in condensers, heat exchangers, power plants, refrigeration equipment, desalination systems, and marine engineering applications. The seamless construction ensures uniform wall thickness, stable pressure resistance, and reliable operation in demanding service conditions. Copper and copper alloy condenser tubes are highly valued for their efficient heat exchange capability, resistance to seawater corrosion, and suitability for critical industrial environments. At Golden Sunbird Metals, we supply ASTM B111 seamless copper and copper alloy condenser tube in a wide range of sizes, wall thicknesses, and alloy grades to meet different project specifications. With a commitment to quality, precision, and responsive service, we provide dependable copper alloy tubing solutions for customers worldwide.
Chemical Composition (wt.%) of ASTM B111 Seamless Copper and Copper-Alloy Condenser Tube
| Alloy | Cu+Ag | Pb | Fe | Zn | Ni | Mn | Sn | Al | As |
| C44300 | 70.0-73.0 | 0.07 | 0.9-1.2 | Remainder | – | – | – | – | 0.02-0.06 |
| C68700 | 76.0-79.0 | 0.07 | 1.8-2.5 | Remainder | – | – | – | – | 0.02-0.06 |
| C70400 | Remainder | 0.05 | 1.3-1.7 | – | – | 1.0 max | – | 4.8-6.2 | – |
| C70620 | 86.5 min | 0.02 | 1.0-1.8 | – | 9.0-11.0 | 0.50 max | – | – | – |
| C71000 | Remainder | 0.05 | 0.50-1.0 | – | 19.0-23.0 | 1.0 max | – | – | – |
| C71500 | Remainder | 0.05 | 0.40-1.0 | – | 29.0-33.0 | 1.0 max | – | – | – |
| C71520 | 65.0 min | 0.02 | 0.40-1.0 | – | 29.0-33.0 | 0.50 max | – | – | – |
Mechanical Properties of ASTM B111 Seamless Copper and Copper-Alloy Condenser Tube
- Tensile Strength (min, ksi): Depends on the temper and wall thickness. For example, C71500 in annealed (O61) temper has a tensile strength minimum of 50 ksi for wall thickness up to 0.048 in.
- Yield Strength (min, ksi): Similar dependency as tensile strength. C71500 in annealed (O61) temper has a yield strength minimum of 20 ksi.
- Elongation in 2 in. (min, %): Also depends on the specific alloy, temper, and dimensions. For annealed C71500, it’s typically around 30% for wall thickness up to 0.065 in.
Features
- ASTM B111 seamless copper and copper-alloy condenser tube for condenser, evaporator, and heat exchanger service.
- Seamless construction provides reliable pressure performance and consistent tube quality.
- Available in commonly used grades such as C44300, C68700, C70400, C70620, C71000, C71500, and C71520.
- Suitable for both straight tubes and U-tubes in thermal equipment.
- Good thermal conductivity and corrosion resistance make it suitable for cooling-water service.
- Copper-nickel grades such as C70600 and C71500 are especially suitable for seawater service and biofouling resistance.
- Available with inspection and testing options such as chemical analysis, tensile testing, grain size, expansion, flattening, residual stress, and NDE.
- Packed in plywood boxes for safe transportation and delivery.
Technical Specifications
| Specification | Value |
| Standard | ASTM B111/B111M Copper and Copper-Alloy Seamless Condenser Tube |
| Grade | UNS C44300, C68700, C70400, C70620, C71000, C71500, C71520 |
| Seam Type | Seamless |
| Type of Tube | U Tubes, Straight Tubes |
| Tube Size | Outside Diameter (OD) Range: 6-50.8mm, Wall Thickness (WT) Range: 0.4-3mm |
| Length | 6000-12000mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical Analysis ASTM E255, Tensile Test ASTM E8/E8M, Grain Size ASTM E112, Expansion Test, Flattening Test, Residual Stress Test, NDE Test ASTM E243 (Hydrostatic/Eddy-Current/Pneumatic Tests) |
Applications
- Steam surface condensers in power plants.
- Feedwater heaters.
- Evaporators and multi-stage flash or multi-effect distillation units.
- Heat exchangers and condensers in industrial process systems.
- Shipboard heat exchangers and marine cooling systems.
- Chillers, HVAC condensers, and cooling circuits.
- Seawater-cooled equipment where copper-nickel grades are preferred for corrosion and biofouling resistance.
- Other thermal equipment requiring durable, corrosion-resistant condenser tubing.
