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Dimensional Specifications
C65500 copper tubes adhere to strict dimensional standards for industrial applications. Below are the size ranges and ASME/ANSI specifications:
Standard Pipe Sizes (ASME BPVC)
General Dimensional Ranges:
- Outer Diameter: 0.2 mm to 120 mm
- Wall Thickness: 0.2 mm to 120 mm
Length: Customizable up to 6 meters (standard lengths: 1–6 m) .
International Standards
C65500 tubes comply with the following ASTM and ASME standards:
- ASTM B98M-2003: Specifies requirements for copper-silicon alloy rods, bars, and shapes .
- ASTM B99M-2006: Covers seamless copper-silicon alloy tubes for condensers and heat exchangers .
- ASTM B315-2006: Standard for seamless copper alloy pipe for plumbing applications .
- ASME BPVC Section II, Part B: Includes mechanical properties and dimensional tolerances for pressure vessel components .
Note: While ASTM B88 governs general-purpose copper water tubes (e.g., Types K, L, M), it is not specific to C65500. Instead, C65500 tubing is regulated by the above silicon-bronze-focused standards .
Chemical Composition
C65500 is a high-silicon bronze alloy primarily composed of copper (Cu) and silicon (Si), with controlled additions of manganese (Mn), iron (Fe), zinc (Zn), and trace impurities. The chemical composition adheres to ASTM B98M-2003, B99M-2006, and B315-2006 standards . Key elements are specified as follows:
Notes:
- Silicon (Si) is the primary strengthening element, enhancing wear resistance, fatigue strength, and corrosion resistance .
- Manganese (Mn) improves hot workability and contributes to age-hardening .
- Impurities like lead (Pb) are tightly controlled to avoid embrittlement .
Mechanical Properties
C65500 exhibits a unique combination of strength, ductility, and corrosion resistance. Its mechanical properties vary significantly with temper (heat treatment and cold-working states). Below are detailed specifications across common temper designations:
2.1 General Mechanical Properties (Typical)
- Tensile Strength: 345–620 MPa (50–90 ksi) .
- Yield Strength (0.5% offset): 105–380 MPa (15–55 ksi) .
- Elongation: 8%–35% (depending on temper) .
- Hardness: 60–100 HRF (Rockwell F Scale) or 75–95 HRB (Rockwell B Scale) .
- Density: 8.53–8.94 g/cm³ .
2.2 Mechanical Properties by Temper Designation
C65500 is available in multiple tempers, as defined by ASTM B98 and ASME BPVC standards. Below are key states:
Notes:
- Age Hardening: C65500 can be precipitation-hardened by aging at 150–350°C (302–662°F), enhancing strength through Mn-silicide precipitation .
- Cold Work: Pre- or post-aging cold work further increases strength (e.g., H04 temper)
1. Production process
Casting and molding process
The production of C65500 copper tube adopts melting, insulation, electromagnetic stirring and precision molding technology. The specific process includes:
The raw materials are melted into molten metal and injected into the insulation furnace to maintain the preset temperature to ensure fluidity.
The copper liquid in the mold is stirred by the electromagnetic stirring device to refine the grains and reduce defects such as pores and cracks, thereby improving the uniformity of the crystal phase and the consistency of wall thickness.
After the crystallizer is cooled and formed, the traction device pulls the billet to complete the shaping.
Strengthening processing technology
Hydrostatic extrusion process: C65500 is plastically deformed by hydrostatic extrusion (Hydrostatic Extrusion) at room temperature, and the total true strain reaches 4.1. This process significantly refines the grains, increases the tensile strength by 45%, and the yield strength by 130%, while maintaining toughness.
Additive manufacturing technology: Electron beam fused additive manufacturing (EBAM) can be used for the production of complex structural parts. Combined with heat input control and post-processing (such as annealing, plastic deformation), it can optimize the mechanical and corrosion resistance of materials.
2. Product advantages
Excellent corrosion resistance
It performs well in seawater, freshwater, acid, alkali, salt and organic chemical environments, and is especially suitable for marine engineering, ship accessories (such as propellers, pumps and valves) and other scenarios.
It has anti-biofouling properties, can inhibit the attachment of microorganisms, and is suitable for seawater desalination plants and medical environments.
Excellent mechanical properties
High strength and hardness: tensile strength ≥ 620 MPa, hardness up to 110 HV, while maintaining an elongation of more than 20%, and can withstand high stress environments.
Fatigue and wear resistance: The high silicon content (2.8-3.8%) gives it excellent wear resistance and fatigue resistance, and is suitable for high-frequency moving parts such as bearings and gears.
Hot working and electrical conductivity
It has good cold/hot working properties and can be formed by forging, stamping, welding (brazing, fusion welding) and other processes.
The thermal conductivity is about 40 W/m·°C and the electrical conductivity is high, which is suitable for heat exchangers, electronic devices and other scenes that require efficient heat dissipation or conductivity.
Multi-functional application scenarios
It covers aerospace (hydraulic pipelines, fasteners), chemical industry (corrosion-resistant pipelines), construction (decorative parts, structural parts) and electrical industry (connectors, wires).
The non-magnetic properties make it useful in magnetically sensitive environments, such as medical equipment and precision instruments.
Q1:Do you provide samples? Is it free or extra?
A1:Yes, we can provide samples free of charge and the customer will pay the freight.
Q2:What if I don't have export experience ?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
Q5:How is your technical support?
A5:We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.
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