Copper Nickel Condenser Tubes
Copper nickel tubes for surface condensers, evaporators and heat exchangers operating with seawater and demanding cooling media.
DLSS supplies C70600 Copper Nickel 90/10 and C71500 Copper Nickel 70/30 seamless condenser tubes according to ASTM B111 / ASME SB111 and project specifications, with straight, U-bend, customized long-length and integral enhanced-surface options available for review.
- Copper Nickel Grades — C70600 · C71500
- Condenser Tube Standard — ASTM B111 / ASME SB111
- Testing & Documentation — ET · Hydro / Pneumatic · Dimensional · EN 10204 3.1 / 3.2
Copper Nickel Grades
C70600 90/10 · C71500 70/30
Temper Options
O61 · H55 · Project-Specified Condition
U-Bend Capability
Custom straight-leg length & bend radius
Inspection Support
ET · Hydro / Pneumatic · Dimensional · TPI
Copper Nickel Tubes for Condenser and Seawater Cooling Service
Copper nickel condenser tubes are widely used in surface condensers, evaporators and heat exchangers where cooling water contains seawater, brackish water or other chloride-bearing media.
C70600 and C71500 combine copper with nickel, iron and manganese to provide useful mechanical performance, fabrication characteristics and corrosion resistance for many cooling-water applications.
C70600 is commonly known as Copper Nickel 90/10, while C71500 is known as Copper Nickel 70/30. Both alloys are included in ASTM B111 for seamless condenser and heat-exchanger tubes.
The correct alloy, temper and tube design should be selected according to:
Cooling-water composition · Chloride concentration · Water pollution level · Flow velocity · Operating temperature · Design pressure · Tube-to-tubesheet method · Fouling conditions · Galvanic compatibility · Cleaning method · Applicable material standard · Inspection requirements
DLSS supports copper nickel condenser tube projects from material and specification review through straight-tube supply, U-bending, integral finning, inspection, documentation, packing and delivery.
Seawater Service
Copper nickel material options for seawater and cooling-water applications.
Condenser Tube Supply
Straight, U-bend and project-specific tube configurations.
Dimensional Control
OD, wall thickness, length and tube-to-tubesheet fit.
Inspection Support
ET, pressure testing, dimensional inspection and documentation.
Copper Nickel Grades We Supply
Select the alloy according to water conditions, corrosion requirements, mechanical requirements and project specification.
C70600 Copper Nickel 90/10
UNS C70600
Copper nickel alloy containing nominally approximately 90% copper and 10% nickel, with controlled iron and manganese additions.
Typical Applications
Surface Condensers · Seawater Cooling · Desalination · Process Heat Exchangers
Key Selection Points
- Widely specified copper nickel condenser-tube grade
- Good fabrication and bending performance
- Used in seawater and cooling-water applications
- Available as straight, U-bend and enhanced-surface tubes
C71500 Copper Nickel 70/30
UNS C71500
Copper nickel alloy containing nominally approximately 70% copper and 30% nickel for selected condenser and cooling-water applications.
Typical Applications
Power Plant Condensers · Seawater Condensers · Desalination · Demanding Cooling Service
Key Selection Points
- Higher nickel content than C70600
- Moderate strength and good forming characteristics
- Used for selected seawater condenser applications
- Final selection depends on water chemistry and project requirements
C70600 or C71500?
The correct copper nickel grade should follow the actual cooling-water conditions and project specification.
| Item | C70600 | C71500 |
|---|---|---|
| Common Name | Copper Nickel 90/10 | Copper Nickel 70/30 |
| Nickel Content | Nominally about 10% | Nominally about 30% |
| Material Family | Copper Nickel | Copper Nickel |
| Typical Positioning | General condenser and seawater cooling service | Selected more demanding condenser and seawater service |
| Final Selection | Based on project conditions | Based on project conditions |
Do Not Select by Nickel Content Alone
C71500 should not be described as universally “better” than C70600. Final grade selection should follow the design specification and corrosion assessment.
Water source
Chloride level
Temperature
pH
Flow velocity
Pollution or sulfide content
Design pressure
Cleaning method
Expected service life
Available Copper Nickel Tube Forms
Different condenser and exchanger designs require different tube configurations.
Straight Copper Nickel Condenser Tubes
Straight seamless tubes for surface condensers, evaporators and heat exchangers according to ASTM B111 / ASME SB111.
Seamless · Fixed Length · Cut Length · Project-Specific Length
Copper Nickel U-Bend Tubes
U-bend seamless copper nickel tubes manufactured according to exchanger drawings and project-specific bending requirements.
Parameters We Can Review
Tube OD · Wall Thickness · Developed Length · Straight-Leg Length · Bend Radius · Tube Pitch · Wall Thinning · Ovality · Temper · NDE Requirements
Long Length Copper Nickel Tubes
Customized tube lengths for large condenser and exchanger bundles requiring project-specific lengths and fewer joints.
Available length depends on alloy, OD, wall thickness, temper, manufacturing route and transportation requirements.
Copper Nickel Finned Tubes
Seamless copper nickel tubes with integral enhanced surfaces produced by cold forming for improved heat-transfer performance.
Parameters We Can Review
Base Tube OD · Wall Thickness · Fin Root Diameter · Fin Height · Fin Pitch / Density · Finned Length · Unfinned Length · Residual Wall Thickness · Temper · Inspection Requirement
Copper Nickel Condenser Tube Specifications
| Specification | Available Options |
|---|---|
| Material Grades | C70600 / C71500 |
| Main Standard | ASTM B111 / ASME SB111 |
| Construction | Seamless under ASTM B111 |
| Welded Option | Where specified under an applicable welded-tube standard |
| Outside Diameter | Standard & Customized |
| Wall Thickness | Standard / Project-Specified |
| Length | Fixed / Cut / Customized Long Length |
| Tube Form | Straight / U-Bend / Integral Enhanced |
| Temper | O61 / H55 / Other applicable condition |
| Surface | Clean / Bright / Project-Specified Surface |
| End Condition | Plain / Cut / Protected Ends |
| Inspection | ET / Hydro / Pneumatic / Dimensional / Alloy Verification / TPI |
| Documentation | MTC / EN 10204 3.1 / 3.2 / Inspection Reports |
| Packing | Bundles / Wooden Cases / Project Packing |
Copper Nickel Condenser Tube Standards
ASTM B111 / ASME SB111
Core Seamless Condenser Tube StandardSeamless copper and copper-alloy tubes for surface condensers, evaporators and heat exchangers.
ASTM B395 / B395M
U-Bend Tube StandardU-bend seamless copper and copper-alloy heat-exchanger and condenser tubes.
ASTM B359 / B359M
Integral Enhanced Tube StandardSeamless copper and copper-alloy condenser and heat-exchanger tubes with integral enhanced surfaces.
ASTM B543 / B543M
Related Welded Tube StandardWelded copper and copper-alloy tubes for condensers, evaporators and heat exchangers.
Temper & Supply Condition
Available temper depends on the alloy, tube form and applicable specification. The purchase order should clearly state the required temper and end condition.
Copper nickel condenser tubes can be supplied in different tempers depending on the alloy, product form, fabrication requirement and purchase specification.
The temper should be selected according to:
- Straight-tube or U-bend application
- Tube expansion or rolling requirement
- Required mechanical properties
- Bendability
- Grain-size requirement
- Integral finning process
- Tube-to-tubesheet method
- Applicable product standard
O61 Annealed
Annealed condition offering high ductility for forming, expansion and selected U-bend applications.
H55 Light Drawn
Light-drawn condition offering increased cold-worked strength for suitable straight or unenhanced tube sections.
Copper Nickel Condenser Tube Applications
Heat Exchanger Manufacturers
Straight, U-bend and enhanced copper nickel tube supply for OEM condenser and heat exchanger fabrication.
Power Plants & Surface Condensers
C70600 and C71500 tube options for surface condensers and circulating-water cooling systems.
Chemical & Petrochemical Processing
Copper nickel tube options for selected process coolers, condensers and heat exchangers.
Desalination & Seawater Cooling
Copper nickel tubes for selected seawater cooling, evaporator and desalination applications.
Industrial Cooling & Offshore Process Equipment
Copper nickel condenser and cooler tubes for selected cooling-water and process equipment applications.
Testing, Inspection & Documentation
ET
Eddy Current Testing
UT
Ultrasonic Testing
PMI
Positive Material Identification
Hydro
Hydrostatic Testing
Dimensional Inspection
OD · WT · Length · Straightness
Documentation
Reports & Certificates EN 10204 3.1 / 3.2
Project Documentation Support
- EN 10204 3.1 / 3.2 Certificates
- MTC (Mill Test Certificate)
- PMI Report
- ET / UT Reports
- Dimensional Reports
- Packing List & More
Complete documentation for seamless approvals and traceability.
Why DLSS for Copper Nickel Condenser Tubes?
Copper Nickel Specification Review
Alloy, standard, temper, dimensions, tube form and inspection requirements reviewed before production.
Integral Finned Tube Support
Fin root diameter, fin height, density, residual wall and unfinned-section requirements reviewed according to project drawings.
U-Bending Capability
Drawing-based review of straight-leg length, bend radius, wall thinning, ovality and inspection requirements.
Testing & Traceability
ET, pressure testing, dimensional inspection and project documentation from production through shipment.
Packing & Project Delivery
Protected tube ends, moisture-resistant packing, wooden cases and international delivery coordination.
FAQ
What copper nickel grades can DLSS supply for condenser tubes?
What is the main standard for copper nickel condenser tubes?
What is the difference between C70600 and C71500?
Can copper nickel tubes be supplied as U-bend tubes?
Can integral finned copper nickel tubes be supplied?
What tempers are available?
What tests can be arranged?
Can EN 10204 3.2 documentation be arranged?
Copper Nickel Condenser Tube Technical Resources
C70600 Material Guide
Properties, tempers, corrosion characteristics and condenser applications.
C71500 Material Guide
Material properties and selection considerations for condenser service.
ASTM B111 Tube Standard
Scope, alloys, tempers, dimensions, testing and ordering requirements.
C70600 vs C71500
Compare Copper Nickel 90/10 and 70/30 for condenser applications.
O61 vs H55
Understand annealed and light-drawn temper requirements.
Copper Nickel vs Titanium
Compare material-selection considerations for seawater heat exchangers.