Phosphorus-Deoxidized copper tubes – C12200 – are extensively used in sugar refineries for condensers and evaporators. Deoxidized copper is the standard material for transferring heat from steam to water or air because of their excellent resistance to corrosion by fresh water and their high thermal conductivities.
Specifications
| Property | Details |
|---|---|
| UNS No. | C12200 – BSI No. C107 – ISO Name Cu-DHP |
| Chemical Comp. (%) | Cu 99.9 / P 0.015 ~ 0.040 |
| ASTM Spec. | B 75, B 111, B 395 |
| ASME Spec. | SB 111, SB 395 |
| Applications | Condenser, evaporator & heat exchanger tubes; Air conditioning & refrigeration; Plumbing pipes & steam tubes. |
| Temper | H55 Light Drawn / H80 Hard Drawn / O61 Annealed |
Properties & Metrics
| Property | Metric | English |
|---|---|---|
| Density | 8.94 g/cm³ | 0.323 lb/in³ |
| Tensile Strength | 221 ~ 379 MPa | 32 ~ 55 ksi |
| Yield Strength | 69 ~ 345 MPa | 10 ~ 50 ksi |
| CTE, linear | 17.7 × 10⁻⁶/°C (20 – 300°C) | 9.8 × 10⁻⁶/°F (70 – 570°F) |
| Specific Heat Capacity | 0.0920 cal/g-°C (20°C) | 0.0920 BTU/lb-°F (70°F) |
| Thermal Conductivity | 339 W/m-K (20°C) | 196 BTU/ft²/ft/h/°F (70°F) |
| Melting Point | 1083°C | 1981°F |
FAQ
Q1: What does DHP stand for?
A: DHP stands for "Deoxidized High Phosphorus." It indicates that the copper has been deoxidized with phosphorus, leaving a relatively high residual phosphorus content (0.015-0.040%), which improves weldability and resistance to hydrogen embrittlement.
Q2: What is the difference between ASTM B75, B111, and B395 for C12200?
A:
ASTM B75 – Seamless copper tube for general engineering applications
ASTM B111 – Seamless condenser tubes for heat exchangers and condensers
ASTM B395 – U-bend seamless copper tubes for heat exchangers and condensers
Select based on your specific application and tube configuration.
Q3: What are the available tempers for C12200 tubes?
A: Available tempers include:
O61 (Annealed) – Softest, for bending and tube expanding
H55 (Light Drawn) – Moderate strength, light forming capability
H80 (Hard Drawn) – Highest strength, minimal formability
For U-bending or tube expansion into tubesheets, always choose O61 (Annealed) .
Q4: What is the thermal conductivity of C12200?
A: 339 W/m-K (196 BTU/ft²/ft/h/°F at 70°F) . This is among the highest of any commercially available heat exchanger tube material, making C12200 ideal for applications where maximum heat transfer is critical.
Q5: Is C12200 suitable for potable water systems?
A: Yes. C12200 is widely used for plumbing pipes and steam tubes. It has excellent corrosion resistance to freshwater and meets standards for drinking water systems.
Q6: What is the difference between C12200 and C1220T (JIS)?
A: C1220T is the JIS equivalent of ASTM C12200. The chemical composition is essentially the same (Cu ≥ 99.9%, P 0.015-0.040%). Key differences are in temper designations and dimensional tolerances. For most heat exchanger applications, they are interchangeable.
Q7: What is the melting point of C12200?
A: The melting point is 1083°C (1981°F) . Both solidus and liquidus are the same because pure copper and copper alloys have a sharp melting range.
Q8: What industries commonly use C12200 tubes?
A: Common industries include:
Sugar refineries (condensers and evaporators)
Power plants (condensers)
HVAC and refrigeration
Plumbing and construction
Heat exchanger manufacturing
How Do We Package Copper Heat Exchanger Tubes for Global Delivery?
Poor packaging destroys even the best copper heat exchanger tube. As a professional copper heat exchanger tube factory serving copper heat exchanger tube USA, Europe, UAE, Saudi Arabia, and India, we follow military-grade export packaging standards to ensure zero damage during sea or air freight.
Our Standard Packaging Process:
| Packaging Stage | Material / Method | Purpose |
|---|---|---|
| Individual Tube Protection | Anti-rust VCI paper + plastic end caps | Prevents moisture, dust, and scratches on copper tube heat exchanger inner surfaces. |
| Bundling | Nylon straps + wooden spacers | Keeps copper heat exchanger tube OD 19mm, 1 inch, or 5/8 inch sizes organized and vibration-free. |
| Moisture Barrier | Thick PE film wrap (heat-shrunk) | Blocks humidity during long sea voyages to copper heat exchanger tube Germany or Saudi Arabia. |
| Outer Packing | Export-grade plywood cases or steel-banded wooden crates | Withstands stacking and rough handling. Each crate labeled with PO number, alloy (e.g., SB111 C70600), and quantity. |
| Documentation | Packing list + Mill Test Certificate (MTC) attached outside | Customs clearance support for copper heat exchanger tube stockist and distributor partners. |
For U-Bundle Orders: U tube heat exchanger and U tube bundle heat exchanger are placed in dedicated steel jigs inside the crate to prevent bending radius distortion.
Our Factory & Equipment
| Equipment Type | Specification / Capability | Quality Impact |
|---|---|---|
| Horizontal Continuous Casting Line | 10-ton capacity | Produces homogeneous copper alloy tube for heat exchanger billets with zero porosity. |
| Three-Roll Piercing Mill | Up to 60mm OD | Precision wall thickness control for heat exchanger tube wall thickness as low as 0.5mm. |
| Cold Drawing Bench | 5 draws in sequence | Achieves tight tolerances on copper heat exchanger tube length and heat exchanger pipe diameter. |
| Straightening & Cutting Line | CNC servo-controlled | Burr-free cutting for copper heat exchanger tube 3/4 inch and 1 inch to exact project lengths. |
| U-Bending Machine | CNC mandrel type | Produces u tube condenser and U tube bundle heat exchanger without kinking or ovality. |
| Eddy Current Tester | NDT (Non-Destructive Testing) | 100% inspection of C70600 tube and C71500 tube for pinholes or cracks per ASTM B111 pdf standards. |
| Hydrostatic Tester | Up to 200 bar | Validates heat exchanger tube expansion and tube rolling integrity. |
| Spectrometer | Optical emission (OES) | Confirms chemical composition of ASME SB111, EN 12451, and JIS H3300 grades on every batch. |
Our Certifications & Compliance:
ASTM B111 pdf and ASME SB111 pdf full traceability.
ISO 9001:2015 quality management system.
Third-party inspection accepted: SGS, BV, Lloyds, or TUV.
Copper heat exchanger tube life expectancy testing reports available upon request.
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