|
Item |
Specification |
|
UNS Number |
|
|
Common Name |
Tin Brass, Naval Brass (Arsenical Brass) |
|
Chinese Designation |
HSn70-1 (GB/T 5232-1985) |
|
European Standard |
CuZn28Sn1 (DIN 17660) |
|
Primary Standards |
ASTM B111/B135, SAE J463, GB/T 5231 |
Product Features of C44300 heating and cooling copper pipes
Exceptional Corrosion Resistance: Tin (0.8–1.3%) and arsenic (0.03–0.06%) synergistically inhibit dezincification (ASTM B858 compliant).
High Strength-Ductility Balance: Annealed tensile strength ≥310 MPa, elongation ≥40%; cold-worked strength up to 600 MPa.
Thermal Conductivity: 109 W/(m·K), electrical conductivity 28% IACS, ideal for heat exchange systems.
Stress Corrosion Sensitivity: Low-temp stress relief required after cold working to prevent cracking.
Process Compatibility: Supports cold bending, flaring, brazing; hot working range 700–800°C.
Common Product Forms & Dimensions
|
Form |
Thickness/Dia. (mm) |
Width/Length (mm) |
Special Requirements |
|
Tube |
Wall: 0.5–10.0 |
OD: 6–300 |
Seamless/Welded condenser tubes |
|
Bar |
Φ3–200 |
Cut-to-length: 0.5–6m |
Hex/Square bars available |
|
Strip |
0.08–2.5 |
Coil width: 10–600 |
Slitting tolerance ±0.1mm |
|
Plate |
0.5–80 |
1000–6000 (L) ×500–3000 (W) |
Max. single plate: 5 tons |
C44300 Chemical Composition of C44300 for Air Conditioner
|
Element |
Standard Range (wt%) |
Typical (wt%) |
Function |
|
Cu |
69.0–71.0 |
70.5 |
Matrix, ensures conductivity |
|
Sn |
0.8–1.3 |
1.0 |
Enhances corrosion resistance |
|
As |
0.03–0.06 |
0.04 |
Strengthens grain boundaries |
|
Zn |
Balance |
28.0 |
Improves fluidity, reduces cost |
|
Total Impurities |
≤0.3 |
0.15 |
Fe≤0.10%, Pb≤0.05% strictly controlled |
Physical Properties of C44300 AC air Conditioner Copper Pipe
|
Property |
Value |
Test Condition |
|
Density (g/cm³) |
8.53 |
20°C |
|
Melting Point (°C) |
900–930 |
– |
|
Thermal Conductivity (W/(m·K)) |
109 |
20°C |
|
Electrical Conductivity (%IACS) |
28 |
Annealed |
|
Thermal Expansion (×10⁻⁶/K) |
20.2 |
20–300°C |
|
Elastic Modulus (GPa) |
117 |
– |
Mechanical Properties of C44300 AC Copper Pancake Tubing
|
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (HB) |
|
Annealed (O) |
310–380 |
105–140 |
≥40 |
60–75 |
|
¼ Hard (H02) |
400–460 |
250–310 |
18–25 |
100–125 |
|
Hard (H04) |
500–600 |
≥390 |
≥5 |
≥150 |
|
Hot Rolled |
450–550 |
350–400 |
10–20 |
120–140 |
Core Advantages of C44300 HVAC Condenser Coil
1. Marine Corrosion Benchmark: Dezincification depth <0.1 mm/year (ASTM G48 seawater), service life >15 years.
2. Heat Exchange Efficiency: Condenser tube heat transfer coefficient ≥5200 W/m²·K, 30% better than stainless steel.
3. Forming Adaptability: Cold bending radius ≥2× wall thickness; compatible with Ag/Cu-P brazing.
4. Environmental Safety: As ≤0.06%, complies with EU REACH industrial exemption.
Product Applications of C44300 Pancake Coil Copper Pipe
Marine Engineering: Ship condenser tubes, desalination pipelines, subsea valves.
Energy & Power: Thermal power plant condensers, nuclear cooling systems, refinery heat exchangers.
HVAC: AC refrigerant tubes, chlorinated hot water pipes.
Mechanical Parts: Deep-drawn pins/springs, corrosion-resistant bearing bushings.
Processing Guidelines of C44300 Copper Tubing for HVAC
|
Process |
Key Parameters |
Risk Control |
|
Hot Working |
700–800°C (finish >550°C) |
Control O₂ at 0.5–1.5% to prevent Zn volatilization |
|
Welding |
TIG: 80–120A |
Argon purity ≥99.99% + preheat 150°C (prevents As porosity) |
|
Annealing |
Stress relief: 285°C×1h |
N₂ atmosphere anti-oxidation |
|
Cold Working |
Deformation ≤50% |
Intermediate annealing at 650°C |
|
Surface Treatment |
Pickling (HNO₃-H₂SO₄) |
Tin plating after oxide removal |
Key Application Scenarios of C44300 Insulated Copper Pipe
Mega Vessels: 200k DWT ship condenser tube bundles (seamless, wall 1.5mm).
Nuclear Plants: AP1000 coolant pipes (chloride resistance design).
Coastal Power Stations: Seawater cooling valves (forged + Ni-Cr coated).
Premium HVAC: Central AC evaporator tubes (brazing integrity required).
Types of products GNEE can provide
|
Product name |
Copper/brass/bronze pipe |
|
Material |
Copper,Pure Copper,Red Copper,Brass,Phosphor Bronze,Nickel-Copper |
|
Grade |
Copper:C11000 C10200 C1100 C1220 T2 CU-OF CU-SF |
|
Size |
Outside diameter 2-800mm; |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard |
|
Surface |
Polished,bright,oiled,hair line,brush,mirror,or as required |
|
Apllication |
Construction, industrial, decoration |
|
Service |
Custom service |
|
Price terms |
CFR,FOB,CIF,Ex-work,CNF |
|
Classification of copper materials |
copper wire, copper rod, copper strip, copper plate, copper tube, copper, bronze, phosphor bronze, materials include: H96 (C2100), |
|
Products name |
Copper/Brass/Bronze alloy Bar |
|
|
Material |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930, C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200, C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000, C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800, C63000,C65500,C68700,C70400,C70600,C70620,C71000,C71500,C71520,C71640, C72200,C86300,C83600,C95400,C95500,C95800, H59,62,H65,H68,H70,H80,H85,H90,H96, T1,T2,T3,TU1,TU0,TU2,TP1,TP2,TAg0.1,etc |
|
|
Size |
Thickness |
2mm-200mm or customized |
|
Width |
10mm-600mm or customized |
|
|
Length |
200mm-6000mm or customized |
|
|
Surface |
Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
|
|
Application |
With high conductivity,copper flat bar can be widely used in: |
|
|
standard |
GB/T4423-2007,
JISH3250-2006, JISH3300-2006, |
|
|
Package |
Standard export package |
|
|
Description
|
copper plate/copper sheet
|
|
|
Other
Standards |
ASTM A276, A484, A479, A580, A582, JIS G4303, JIS G4311,
DIN 1654-5,DIN 17440,GB/T 1220 |
|
|
Material
|
Copper (C10200,C11000,C10100,C10200,C12000,)C11600,
Brass(C21000,C22000,C23000,C24000,C26000,C27000,C27200,C27400,C2800, C31400,C33000,C35600,C37100,C36000,C35300,C37100,C37700,C37710,C37000, C68700,C41100,C44300,C46200.C46400,C26130,C65600,) Bronze(C50500,C51100,C52100,C60800,C61000,C61900,C63010,C62300, C63000,C63280,C63020,C17200,C17000,C17500,C17510,C18200,C18100,C18200, C16200,C19400,C14500) Cupronickel(C70400,C71000,C71300,C71500,C70400,C70600,C75200,C77000, C75400,C79000,C79200) |
|
|
Specifications
|
thickness:0.1~20mm,width:1~2500mm
|
|
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Price Term
|
EX-Work, FOB, CFR, CIF
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|
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Payment Term
|
T/T, L/C, Western Union
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|
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Delivery Time
|
According to customer' s quantity
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|
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Main Market
|
Europe,South America, Africa ,Oceania ,such as :
USA,Germany,India,.,Dubai,Iraq,Vietnam,Ireland,Singapore,etc |
|
|
Product name |
Copper Wire |
|
Grade |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70620,C71000,C71500,C71520,C71640,C72200,T1,T2,T3,etc |
|
Standard |
JIS ASTM DIN EN ISO |
|
Diameter |
0.3-5mm/custom |
|
Length |
custom |
|
Surface |
mill,polished,bright,mirror,hair line,brush,checkered,antique,sand blast,etc |
|
Application |
Building, industry etc |
|
Payment Terms |
T/T or L/C at sight |
|
Delivery time |
5-15 days after receiving L/C or deposit |
|
Remark |
Specific requirement of alloy grade,temper or specification can be discussed at your request |
Copper CNC machined parts
|
Service Offer |
Cnc Machining/Turning/Milling, Sheet Metal Fabrication, Laser Cutting, Stamping, Bending, Spinning, Wire Cutting, Die Casting, Forging, Gear machining, etc. |
|
Materials |
Aluminum, Stainless Steel, Steel, Brass / Bronze / Copper, Titanium Alloy, Plastic, etc. |
|
Application Areas |
Auto parts, Automated Robots, Drones, Medical Equipment, Mechanical Hardware, Aerospace Military Industry, Electronic Equipment, Lighting Fixtures, 3C Digital Products, Household Appliances |
|
Tolerance |
+/-0.01 mm, Strict tolerance can reach +/-0.005 mm |
|
Processing Capabilities |
10000pcs/day |
|
Drawing Format |
STP, Solid Works, Pro/Engineer, Auto CAD(DXF,DWG), PDF, TIF etc. |
|
Surface treatment |
Anodizing, Hard anodizing, Gradual anodizing, Electro-plating, Electroless nickel, PVD, Painting, Powder coating, Teflon coating, Ceramic plating, Sandblasting, Brush, Mirror polish, etc. |
|
Testing equipment |
Three-coordinate measuring machine, 2.5 Dimension measuring instrument, inside micrometer, outside micrometer, electronic height gauge,Thread go and no-go gauges, external thread ring gauges, electronic calipers, pin gauges |
|
Project delivery |
1-10 days |
|
Product Packaging |
Inner packaging: foam, plastic, paper;
Outer packing: hard thick carton, customized wooden box |
|
Payment Methods |
T/T, L/C, Trade Assurance |
in exporting copper products
With 18 years of experience, we are a leading exporter of high-quality copper products. Our efficient production lines, featuring continuous casting rods, precision drawing, and automated annealing processes, ensure consistent quality. Combined with rigorous in-house testing, including spectral analysis and pressure tests, we guarantee that every copper tube, coil, and rod meets the highest international standards for global clients.
