Uns C10200 C10300 Copper Tubes Heat Exchangers Tube¹

Product Description  Product Description1. Alloy Overview & SpecificationsUNS C10200 (Oxygen-Free Copper):99.95% minimum copper content, deoxidized with phosphorus (P ≤ 0.005%), virtually oxygen-free (O ≤ 0.003%).UNS C10300 (Silver-Bearing Oxygen-Free Copper):99.90% minimum copper, with 0.03-0.30% silver (Ag) addition to enhance thermal conductivity and high-temperature strength.Standards Compliance:ASTM B75 (seamless copper tubes for water/gas), ASTM B280 (refrigeration), and ASME SB75 for heat exchanger applications.2. Chemical Composition (wt.%)ElementC10200 (min.)C10300 (min.)Impurity Limits (max.)Copper (Cu)99.9599.90S: 0.001, As: 0.002Oxygen (O)≤0.003≤0.003Fe: 0.005, Pb: 0.001Phosphorus (P)≤0.005≤0.005Zn: 0.005, Sn: 0.002Silver (Ag)-0.03-0.30Total: 0.1%3. Thermal & Mechanical PropertiesPropertyC10200 (Soft)C10300 (Soft)Test MethodThermal Conductivity401 W/m·K386 W/m·KASTM E1530Electrical Conductivity≥100% IACS≥97% IACSASTM B193Tensile Strength20 ksi (138 MPa)22 ksi (152 MPa)ASTM E8Yield Strength (0.2%)6 ksi (41 MPa)8 ksi (55 MPa)ASTM E8Elongation (%)3530ASTM E8Melting Point1083°C1080-1083°CASTM E15304. Heat Exchanger ApplicationsKey Use Cases:Shell-and-Tube Heat Exchangers: Condensers, evaporators, and chillers in power plants, refineries, and HVAC systems.Refrigeration Systems: Refrigerant lines and coils (ASTM B280 compliance for AC/refrigeration).Chemical Processing: Heat transfer in reactors, distillation columns, and cooling systems.Advantages in Heat Transfer:High Thermal Conductivity: C10200's 401 W/m·K enables efficient heat exchange, reducing surface area requirements.Corrosion Resistance: Resists scaling from waterborne minerals and oxidation in steam/humid environments.Formability: Easily bent into coils or shaped for compact heat exchanger designs.5. Manufacturing Process for Heat ExchangersSeamless Tube Production:Hot Extrusion: Copper billets heated to 1300°C, extruded into hollow tubes.Cold Drawing: Drawn through dies to achieve precise OD (6-300 mm) and wall thickness (0.5-12.7 mm).Surface Treatment:Annealing: Soft (O60) temper for maximum ductility in coiling applications.Bright Annealing: Oxide-free surface for improved heat transfer efficiency.Enhanced Heat Transfer Features:Internal Fins: Optional integral fins (lanced or helical) to increase surface area by 30-50%.Tubing Geometry: Smooth inner bore to minimize fluid resistance and fouling.6. Corrosion Resistance & Fluid CompatibilityResistant Media:Potable water, steam, refrigerants (R-410A, R-134a), and non-oxidizing acids (e.g., acetic, citric).Cautionary Media:Avoid contact with ammonium salts, sulfur compounds, or high-chloride waters (risk of pitting).Compatibility with Heat Transfer Fluids:Excellent with water, glycol solutions, and most organic solvents.7. Dimensions & StandardsTypical Sizes for Heat Exchangers:Outer Diameter (OD): 10-50 mm (0.39-1.97 in).Wall Thickness: 0.7-2.0 mm (0.028-0.079 in) for optimal heat transfer.Standards Compliance:ASTM B280 (refrigeration tubes), TEMA (Tubular Exchanger Manufacturers Association) standards for design.   Expansion TestTube specimens selected for test shall withstand the expansion shown in standard when expanded in accordance with Test Method B 153. The expanded tube shall show no cracking or rupture visible to the unaided eye.Hard-drawn tubes not end annealed are not subject to this test. When tubes are specified end annealed, this test is required and shall be performed on the annealed ends of the sampled tubes.Tubes for ferrule stock are not subject to the expansion test.Flattening TestTest Method-Each test specimen shall be flattened in a press at three (3) places along the length, each new place to be rotated on its axis approximately one third turn from the last flattened area. Each flattened area shall be at least 2 in. in length. A flattened test-specimen shall allow a micrometer caliper set at three (3) times the wall thickness to pass freely over the flattened area. The flattened areas of the test specimen shall be inspected for surface defects.During inspection, the flattened areas of the test- specimen shall be free of defects, but blemishes of a nature that do not interfere with the intended application are acceptable.Tubes for ferrule stock are not subject to flattening test.Residual Stress TestA residual stress test is required to be performed only for Copper Alloy UNS Nos. C23000, C28000, C44300, C44400, C44500, C60800, C61300, C61400, and C68700.Unless otherwise specified, the producer shall have the option of testing the product to either the mercurous nitrate test, Test Method B 154, or the ammonia vapor test, Test Method B 858, as prescribed below.Nondestructive TestingEddy-Current Test-Each tube shall be passed through an eddy-current testing unit adjusted to provide information on the suitability of the tube for the intended application. Testing shall follow the procedures of Practice E 243.Hydrostatic TestEach tube shall stand, without showing evidence of leakage, an internal hydrostatic pressure sufficient to subject the material to a fiber stress of 7000 psi [48 MPa] as determined by the following equation for thin hollow cylinders under tension. The tube need not be tested at a hydrostatic pressure of over 1000 psi [7.0 MPa] unless so specified. Detailed Photos  Processing of ProductionTechnical Details  Certifications 

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