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Detailed size range:
C52100 copper tubes have a wide range of sizes, usually ranging from 1.0 mm to 200 mm in diameter, and can be 2500 mm to 6000 mm in length. Specific specifications can be customized according to demand, for example, the round and flat (square and rectangular) phosphor bronze wire mentioned in the American standard ASTM B159 is also applicable to C52100 copper tubes.
International standards:
ASTM B159/B159M-17: This standard specifies the requirements for round and flat (square and rectangular) phosphor bronze wire for C52100 copper tubes, including dimensions, units, additional requirements, and safety issues.
EN 12449: This standard specifies the nominal size, outer diameter, minimum wall thickness, and wall thickness tolerance of seamless copper tubes in detail.
GB/T 16866: China's national standard, which specifies the outer diameter of copper tubes and their allowable deviations.
Chemical composition:
Copper (Cu): balance (usually ≥92%)
Tin (Sn): 6.0%~9.0%
Phosphorus (P): 0.1%~0.35%
Lead (Pb): ≤0.02%
Iron (Fe): ≤0.05%
Aluminum (Al): ≤0.002%
Zinc (Zn): ≤0.2%
Other impurities (such as silicon, antimony, bismuth, etc.): total ≤0.15%
Mechanical properties (state description):
Soft state (annealed state):
Tensile strength (σ<sub>b</sub>): 360～470 MPa
Yield strength (σ<sub>0.2</sub>): 230～270 MPa
Elongation (δ): ≥33%
Hardness (HV): 75～80
Hard state (cold worked state):
Tensile strength (σ<sub>b</sub>): 860～1035 MPa
Yield strength (σ<sub>0.2</sub>): up to 552 MPa
Elongation (δ): ≤5% (plasticity significantly reduced in hard state)
Hardness (HV): 190～210
Other states (such as 1/4 hard, 1/2 hard, etc.):
Tensile strength range: 510～930 MPa, increasing with the degree of work hardening.
Key features:
Wear resistance and friction reduction: Due to the presence of tin and phosphorus, the friction coefficient is low (0.0125 when lubricated), suitable for wear-resistant parts such as bearings and sleeves.
Corrosion resistance: Excellent performance in the atmosphere, fresh water and sea water.
Cold processing performance: It can be strengthened by cold pressure processing, but it is easy to become hot brittle during hot processing.
Electrical conductivity/thermal conductivity: The thermal conductivity is about 54.4 W/(m·K), and the electrical conductivity is moderate.
Welding performance: Supports soldering, copper welding, and arc welding, but submerged arc welding and electroslag welding have poor results.
Production process and product advantages of C52100 copper tube:
1. Production process
Chemical composition and smelting
The main components of C52100 copper tube include copper (remainder), tin (7.0-8.6%), phosphorus (0.01-0.25%), and a small amount of iron, zinc, lead and other elements. The reasonable ratio of these components gives C52100 copper tube high strength, good corrosion resistance and cutting performance. During the production process, cathode copper and phosphor copper alloy are first melted to 1200℃ by an industrial frequency furnace, and then horizontal continuous casting and cooling are carried out.
Processing process
The processing flow includes milling, planetary rolling, stretching, annealing, straightening and other steps. For example, in the milling process, planetary rotary cutting technology is used to remove surface oxides; in the rolling process, metal recrystallization is achieved through planetary rolling technology to improve material strength and dimensional accuracy; the annealing process is processed by a bell-shaped bright annealing furnace to ensure the surface finish of the material.
Environmental protection and resource recycling
During the production process, scraps and waste emulsions are recycled, such as waste emulsions used for production wastewater treatment, and copper chips are recycled. In addition, the use of energy-saving frequency conversion technology and energy management technology further reduces production costs and improves efficiency.
2. Product advantages
High strength and corrosion resistance
C52100 copper tube has high strength and elastic limit, as well as good corrosion resistance, and performs well in atmospheric, freshwater and seawater environments. Its high tensile strength and elastic modulus make it suitable for working environments with high pressure and frequent heat and cold exchanges.
Cutting performance and processability
C52100 copper tube has excellent cutting performance and is suitable for precision machining. It is not easy to crack or deform during machining, and has a high surface finish, which makes it excellent in the manufacture of products such as bellows, diaphragms, and fasteners.
Welding and heat treatment performance
Although C52100 copper tube is not easy to braze, its mechanical properties can be enhanced by heat treatment. For example, annealing can significantly improve the elongation and bending performance. In addition, its hot pressure processing performance is good and it is suitable for cold processing and hot processing.
Wide application
C52100 copper tube is widely used in electrical equipment, automotive industry, building pipeline systems and other fields due to its excellent comprehensive performance. For example, in electrical equipment, its high conductivity and fatigue resistance make it an ideal connector material; in the construction field, its corrosion resistance and cutting performance make it a high-quality pipeline material.
Environmental protection and sustainability
The production process of C52100 copper tube pays attention to environmental protection, and waste recycling reduces resource waste and reduces the impact on the environment.
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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