One of the most common mistakes we see in HVAC and plumbing sourcing is mixing up C11000 and C12200.
While they both look like "red copper," they are chemically engineered for two completely different purposes. If you use C12200 for a high-current busbar, your system might overheat. If you use C11000 for a condenser tube, your joints might leak.
Here is the technical trade-off you need to understand.
The Phosphorus Trade-off
C11000 (ETP): Pure copper. Great conductivity.
C12200 (DHP - Deoxidized High Phosphorus): We add Phosphorus (0.015% - 0.040%) to "kill" the oxygen.
Phosphorus is a double-edged sword. It removes the oxygen (making the metal tough and weldable), but it severely restricts the flow of electricity.
The Data That Matters
| Feature | C11000 (ETP) | C12200 (DHP) |
| IACS Conductivity | 101% (Excellent) | ~85% (Poor) |
| Weldability | Poor (Risk of porosity) | Excellent |
| Main Application | Electrical Industry | Piping, HVAC, Roofing |
Real-World Application Scenarios
Scenario A: The Heat Exchanger / HVAC Project
You are manufacturing condenser tubes or evaporator coils. You need to braze thousands of joints.
Winner: C12200.
Why: You need the phosphorus to prevent oxidation during brazing. Conductivity is secondary here; thermal transfer is what counts (and C12200 is still decent at thermal transfer).
Scenario B: The Power Distribution Project
You are designing a high-amp busbar system.
Winner: C11000.
Why: If you use C12200 here, the 15% loss in conductivity means significantly higher resistance and heat generation. You would need to increase the cross-section of the copper to compensate, which increases weight and cost.
Summary for Buyers
Buying for Electricity? -> C11000.
Buying for Plumbing/Tubes/Gases? -> C12200.
At GNEE, we stock both. But we will double-check your application before we ship. We'd rather ask you a question now than handle a claim later.
Product Forms We Can Provide
| Product Category | Material Standards | Common Alloys | Key Specifications (Can be Customized) |
|---|---|---|---|
| Copper Tubes | ASTM B75, B88, B280,B111; EN 12449, 12451; DIN EN 12735; JIS H3300 | C10100 (OFE), C11000 (ETP), C12200 (DHP), C23000, C70600,C71500 | OD: 3mm - 300mm Wall Thickness: 0.5mm - 20mm Temper: Soft (O), Half-Hard (H50), Hard (H80) Form: Straight Lengths, Coils, U-Bends |
| Copper Sheets / Plates | ASTM B152, B248, B248M; EN 1652; DIN 1787; JIS H3100, H3250 | C10100 (OFE), C11000, C10200 (OF), C26000, C86200 | Thickness: 0.3mm - 100mm Width: Up to 1200mm Length: Up to 3000mm (or coils) Surface: Mill, Polished, Brushed |
| Copper Rods / Bars | ASTM B187, B301, B411; EN 12163, 12164; DIN 17672; JIS H3250 | C10100 (OFE), C11000, C14500, C36000, C63000 | Diameter/Rect. Size: 3mm - 300mm Shape: Round, Square, Hexagonal, Rectangular Condition: Drawn, Extruded, Hot Rolled |
| Copper Wires | ASTM B1, B2, B3, B258; EN 13601; IEC 60228; JIS H3100 | C10100 (OFE), C11000, C14420, C14500 | Diameter: 0.1mm - 20mm Temper: Soft, Annealed, Hard-Drawn Form: Bare, Tinned, Stranded, on Spools |
| Copper Foils / Strips | ASTM B103, B370; EN 1652; DIN 1787; JIS H3100 | C10100 (OFE), C10200, C11000, C19400, C26800 | Thickness: 0.02mm - 2.0mm Width: Up to 600mm Temper: Rolled, Annealed |
| CNC Machining Parts | As per Customer Drawing/Req. | All Common Copper Alloys (including C10100, C11000, C86200, etc.) | Process: Turning, Milling, Drilling, Tapping Tolerance: ±0.005mm - ±0.1mm Post-Processing: Deburring, Polishing, Plating |
Our factory
Our manufacturing facility operates a comprehensive and modern production line, equipped with advanced continuous casting, precision rolling, high-speed drawing, and multi-axis CNC machining centers, enabling us to process copper and copper alloys (such as C10100, C11000, C12200, C71500,C70600 etc.) into a full range of products including tubes, sheets, rods, wires, and foils. To ensure top-tier quality, we have implemented a rigorous in-process and final inspection system, utilizing state-of-the-art equipment such as spectrometers for material verification, digital tensile testers for mechanical property checks, precision dimensional gauges, and eddy current or ultrasonic testers for defect detection, guaranteeing that every product meets or exceeds international standards such as ASTM, EN, and JIS, as well as specific customer requirements.
