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The diameter range of C46400 copper wire varies according to application requirements and production standards:
Single wire specifications:
Bare copper wire or tinned copper wire, diameter range 0.10-0.80 mm
Extended specifications:
A wider diameter range of 0.1-3 mm is available, suitable for special needs such as wire, welding rod, etc.
International standards
C46400 copper wire follows the following international standards:
ASTM standards:
ASTM B21: Specification for naval brass bars, rods and shapes, covering the mechanical properties and chemical composition of C46400.
ASTM B124: Applicable to forged copper alloy bars, including cold-worked products of C46400.
ASME standards:
ASME SB-171: Copper alloy plates for pressure vessels and condensers, indirectly related to the process of processing C46400 plates into wire.
Government standards:
QQ-B-637: Clarifies the technical requirements for C46400 wire, bars and forgings.
Chemical composition
Copper (Cu): 59.0%–62.0% (core component)
Tin (Sn): 0.5%–1.0% (key additive, improving corrosion resistance)
Zinc (Zn): balance (about 37.5%–39.25%)
Lead (Pb): ≤0.20% (improves processability)
Iron (Fe): ≤0.10% (impurity limit)
Other trace elements: extremely low or undetectable content of aluminum, manganese, nickel, etc.
Normal state (not heat treated)
Tensile strength: 345–607 MPa
Minimum value: 345 MPa (annealed state)
Typical value: 379–450 MPa
Maximum value: 605 MPa (cold worked state)
Yield strength: 125–455 MPa
Annealed state: 125–140 MPa
Cold worked state: 455 MPa
Elongation: 15%–50%
Annealed state: 35%–50%
Cold worked state: 15%–18%
Hardness: 80–200 HB (Brinell hardness)
Annealed state: 80 HB
Hard state: 200 HB
Specially treated state
Hardened treatment: tensile strength up to 900 MPa, yield strength 490 MPa, elongation 15%.
We specialize in producing stainless steel products, carbon steel products, copper products, aluminum products, etc. Especially stainless steel rods, stainless steel plates, seamless steel pipes, and stainless steel coils. Our products are corrosion-resistant and heat-resistant. We will provide you with high-quality, low-priced, and first-class services, and hope to become your gold medal supplier. We cooperate with many countries, including Asia, Europe, the Middle East, Africa, North America, South America, etc.
Production process and product advantages of C46400 copper wire:
Production process
The production process of C46400 copper wire mainly includes the following steps:
Pretreatment:
Preheating: Preheat the electrolytic copper plate (80~150℃), remove surface moisture, and use natural gas for heating.
Rough drawing and wire laying: The copper rod is laid out through the wire rack to prepare for subsequent processing.
Surface treatment:
Mechanical shelling to remove the oxide layer, followed by electrolytic pickling, cold water washing, hot water washing and other cleaning steps.
Boron coating treatment: Enhance the surface lubricity of the copper wire to facilitate subsequent wire drawing.
Wire drawing forming:
Multi-pass wire drawing process, gradually draw the copper rod into copper wire of the required diameter (single wire specification is usually 0.10-0.80mm).
Post-processing:
Lead plating: Lead plating is required in some processes to improve corrosion resistance.
Twisting and rope closing: Multiple strands of copper wire are twisted through a wire bundling machine, then formed by a rope closing machine, and finally inspected and packaged.
Product Advantages
Due to its unique composition (Cu 59-62%, Sn 0.5-1.0%, Zn balance) and process design, C46400 copper alloy has the following advantages:
Excellent corrosion resistance:
The addition of tin significantly improves the corrosion resistance to seawater, especially in high temperature or high salinity environments, and has strong resistance to dezincification.
Excellent mechanical properties:
Tensile strength can reach 380-600 MPa, yield strength 170-450 MPa, elongation 6-50%, with both high strength and good plasticity.
Outstanding fatigue resistance, wear resistance and stress corrosion cracking (SCC) resistance.
Excellent processing performance:
Excellent hot processing performance, suitable for forging, rolling, extrusion and other forming processes; annealing can also be used to optimize performance during cold processing.
Good welding performance, supporting a variety of connection methods such as soft soldering and silver soldering.
Electrical and thermal conductivity:
Thermal conductivity is 121 W/m·K, and the electrical conductivity is 26% IACS (International Annealed Copper Standard), suitable for electrical systems and heat exchangers.
Wide range of applications:
Ship industry: key components such as propeller shafts, valves, condenser tubes, hull hardware, etc.
Aerospace and automotive: aircraft joints, bolts, nuts, automobile exhaust pipes, etc.
Electronics and energy: wires, cables, motor copper wires, etc., thanks to its electrical conductivity and corrosion resistance.
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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