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Regarding the size range of C27400 copper wire, its diameter can range from very small specifications (such as 0.1 mm) to larger specifications (such as 40 mm) according to different application requirements. In some precision machining fields, the diameter of C27400 copper wire can reach 18 microns to 50 microns, and can even be expanded to larger sizes according to needs. In addition, according to specific uses, its length can also be customized, usually to meet actual needs.
In terms of international standards, the international grade corresponding to C27400 copper wire is CuZn37, and its equivalent standards include ISO, ASTM, EN, etc. For example, the performance requirements of C27400 copper alloy are clearly mentioned in the ASTM B135/B135M-2017 standard. In addition, C27400 copper wire also meets the relevant provisions of the German standard DIN 62 and the Russian standard GOST.
C27400 copper wire is a widely used low-phosphorus brass material, whose size range and international standards cover application requirements from micron to millimeter level, and meet the requirements of multiple international and national standards.
Chemical composition (mass percentage)
Copper (Cu): 61%-64%
Zinc (Zn): Balance (about 35%-39%)
Lead (Pb): ≤0.10% (some data suggest 0.08%-0.5%, but most limit to ≤0.1%)
Iron (Fe): ≤0.05%-0.15%
Other elements (such as nickel, tin, aluminum, etc.): Total ≤0.5%
Mechanical properties are significantly affected by processing state (such as soft state, hard state, hot state, etc.), and typical values are as follows:
Tensile strength (σ₆)
Soft state (M): ≥290 MPa (such as annealed state)
Hard state (H80): 510 MPa (about 74 ksi)
General standard: 220-585 MPa (depending on processing state)
Yield strength (σ₀.₂)
Soft state: ≥160 MPa
Hard state (H80): 379 MPa (about 55 ksi)
Other states: 28-48 ksi (about 193-331 MPa)
Elongation (δ)
Soft state: ≥30%
Hard state: 10%-15%
Semi-hard state: ≥15%-20%
Hardness
Vickers hardness (HV): 85-175 (depending on state)
Rockwell hardness (HRB) ：10-20
Other properties
Electrical conductivity: 27%-30% IACS (lower than pure copper, but better than most alloys)
Thermal conductivity: 67-138 W/(m·K)
Density: 8.7 g/cm³
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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