GNEE maintains an extensive inventory of C12200 DHP copper in sheet, plate, pipe, tube and fittings. C122 is commercially pure copper, which has been deoxidized with phosphorus, leaving a relatively high residual phosphorus content. Copper alloy 122 is not susceptible to hydrogen embrittlement but has relatively low electrical conductivity due to the amount of phosphorus content.
GNEE can offer material cut to your specifications on our bar saws, shears, precision plate saws, and water jets. Contact one of our experts today to find out how we can help meet your copper needs.
C12200 DHP Applications
Distiller / Brewery Tubes
Heat Exchanger Shells
Expansion Joint Tubes
Kettles
Condenser Tubes
Medical Gas-Oxygen Lines
Gaskets
Chemical Properties
| Element | Cu (1,2,3) | P |
|---|---|---|
| Min % | 99.99 | 0.015 |
| Max % | - | 0.040 |
Physical Properties
| Property | Value |
|---|---|
| Melting Point – Liquidus (°F) | 1981 |
| Melting Point – Solidus (°F) | 1981 |
| Density (lb/in³ at 68°F) | 0.323 |
| Specific Gravity | 8.94 |
| Electrical Conductivity (% IACS at 68°F) | 101(1) |
| Thermal Conductivity (Btu/sq ft/ft/hr/°F at 68°F) | 226 |
| Coefficient of Thermal Expansion (10⁻⁶/°F, 68-212°F) | 9.4 |
| Coefficient of Thermal Expansion (10⁻⁶/°F, 68-392°F) | 9.6 |
| Coefficient of Thermal Expansion (10⁻⁶/°F, 68-572°F) | 9.8 |
| Specific Heat Capacity (Btu/lb/°F at 68°F) | 0.092 |
| Modulus of Elasticity in Tension (ksi) | 17,000 |
| Modulus of Rigidity (ksi) | 6,400 |
Fabrication Properties
ASTM Standard Designations for C12200 (DHP) Copper: ASTM B42, ASTM B68, ASTM B75, ASTM B88, ASTM B111, ASTM B152, ASTM B280
| Joining Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Excellent |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Not Recommended |
| Seam Weld | Not Recommended |
| Butt Weld | Good |
| Fabrication Property | Suitability |
|---|---|
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Excellent |
| Forgeability Rating | 65 |
| Machinability Rating | 20 (of free cutting brass) |
Mechanical Properties
| Form | Temper | Tensile Strength (KSI) | YS-0.5% EXT (KSI) | Elongation (%) | Rockwell (B) | Rockwell (F) | Rockwell (30T) | Shear Strength (KSI) | Fatigue Strength (KSI) | Section Size (IN) |
|---|---|---|---|---|---|---|---|---|---|---|
| PLATE / SHEET / STRIP | H02 | 42 | 36 | 14 | 40 | 84 | 50 | 26 | 13 | 0.04 |
| H01 | 38 | 30 | 35 | 25 | 70 | 25 | – | – | 0.25 | |
| H01 | 38 | 30 | 25 | 25 | 70 | 36 | 25 | – | 0.04 | |
| H00 | 36 | 28 | 30 | 10 | 60 | 25 | 25 | – | 0.04 | |
| H00 | 36 | 28 | 40 | 10 | 60 | 25 | – | – | 0.25 | |
| M20 | 32 | 10 | 50 | – | 40 | 22 | – | – | 0.25 | |
| M20 | 34 | 10 | 45 | – | 45 | 23 | – | – | 0.04 | |
| H10 | 57 | 53 | 4 | 62 | 95 | 64 | 29 | – | 0.04 | |
| H04 | 50 | 45 | 6 | 50 | 90 | 57 | 28 | 13 | 0.04 | |
| H04 | 45 | 40 | 20 | 45 | 85 | – | 26 | – | 1 | |
| H04 | 50 | 45 | 12 | 50 | 90 | – | 28 | – | 0.25 | |
| OS025 | 34 | 11 | 45 | – | 45 | 23 | – | 11 | 0.04 | |
| OS050 | 32 | 10 | 50 | – | 40 | 22 | – | – | 0.25 | |
| OS050 | 32 | 10 | 45 | – | 40 | 22 | – | – | 0.04 | |
| H08 | 55 | 50 | 4 | 60 | 94 | 63 | 29 | 14 | 0.04 | |
| PIPE | H04 | 50 | 45 | 10 | 50 | 90 | – | 28 | – | – |
| TUBE | H80 | 55 | 50 | 8 | 60 | 95 | 63 | 29 | 19 | 0.065 |
| H55 | 40 | 32 | 25 | 35 | 77 | 45 | 26 | 14 | 0.065 | |
| OS025 | 34 | 11 | 45 | – | 45 | 23 | – | – | 0.065 | |
| OS050 | 32 | 10 | 45 | – | 40 | 22 | – | 11 | 0.065 |
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FAQ
Q1: What does DHP stand for?
A: DHP stands for "Deoxidized High Phosphorus." It indicates that the copper has been deoxidized with a higher level of phosphorus residue (0.015-0.040%), which improves weldability and resistance to hydrogen embrittlement.
Q2: Is C12200 susceptible to hydrogen embrittlement?
A: No, C12200 is NOT susceptible to hydrogen embrittlement. This is one of its key advantages over non-deoxidized coppers like C11000 (ETP copper). The phosphorus content ties up oxygen, preventing hydrogen from reacting with copper oxides to form steam and cause cracking.
Q3: What is the electrical conductivity of C12200?
A: This is a critical correction: The product page states 101% IACS, but this is likely an error. Standard reference values for C12200 (DHP copper) are 85-90% IACS. The 100-101% IACS value applies to oxygen-free coppers (C10100/C10200) . If electrical conductivity is critical for your application, please verify with the supplier and request a mill test certificate.
Q4: What forms of C12200 are available?
A: The supplier maintains inventory in sheet, plate, pipe, tube, and fittings. Custom cutting services are available on bar saws, shears, precision plate saws, and water jets.
Q5: What are the common applications for C12200 DHP copper?
A: Common applications include:
Distiller / Brewery Tubes
Heat Exchanger Shells
Expansion Joint Tubes
Kettles
Condenser Tubes
Medical Gas-Oxygen Lines
Gaskets
Q6: What welding methods are suitable for C12200?
A:
Excellent: Gas Shielded Arc Welding, Brazing, Soldering
Good: Butt Weld, Oxyacetylene Welding
Not Recommended: Coated Metal Arc Welding, Spot Weld, Seam Weld
Q7: What is the machinability rating of C12200?
A: The machinability rating is 20% of free cutting brass. This means it is relatively soft and gummy, requiring sharp tools and proper lubrication for good results.
Q8: What is the forgeability rating?
A: The forgeability rating is 65 (on a scale where free cutting brass = 100). This indicates good hot workability.
Q9: What is the difference between C12200 and C122?
A: They are the same material. "C122" is a common shorthand for UNS C12200. Some older specifications may use C122 as the designation.
Q10: What ASTM standards apply to C12200 DHP copper?
A: The page lists: ASTM B42, B68, B75, B88, B111, B152, B280. Choose based on your application:
B111 – Condenser and heat exchanger tubes
B75 – General engineering seamless tubes
B88 – Water service tubes
B280 – Air conditioning and refrigeration
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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