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Dimensional Range
C61300 copper tubes are manufactured in a wide range of standardized dimensions, adhering to international specifications:
- Outer Diameter (OD):
- Standard Pipe Sizes (ASME BPV Code): Ranges from 1/8" (3.18 mm) to 8" (203 mm) or larger, with tolerances of ±0.002" (0.051 mm) for smaller diameters (≤1/8") and ±0.013" (0.33 mm) for larger diameters (≥8") .
- General Engineering Tubes (EN 12449/ASTM B280): Covers OD from 2 mm (0.079") to 406 mm (16"), with extended options up to 914 mm (36") for specialized applications .
- Standard Pipe Sizes (ASME BPV Code): Ranges from 1/8" (3.18 mm) to 8" (203 mm) or larger, with tolerances of ±0.002" (0.051 mm) for smaller diameters (≤1/8") and ±0.013" (0.33 mm) for larger diameters (≥8") .
- Wall Thickness:
- Regular Strength: 0.098"–0.120" (2.49–3.05 mm) for 1/2" nominal pipe .
- Extra-Strong: 0.147"–0.162" (3.73–4.11 mm) for enhanced pressure resistance .
- Custom Applications: Wall thicknesses from 0.5 mm (0.02") to 80 mm (3.15") are achievable, depending on fabrication requirements .
- Regular Strength: 0.098"–0.120" (2.49–3.05 mm) for 1/2" nominal pipe .
International Standards
C61300 copper tubes comply with the following key standards:
- ASTM B169M-2005: Specifies chemical composition, mechanical properties, and tolerances for aluminum bronze plates, sheets, and strips, including C61300 .
- ASME Boiler and Pressure Vessel Code (BPVC) Section II Part B: Defines dimensional limits and material requirements for C61300 pipes in high-pressure systems, such as boilers and heat exchangers .
- ASTM B150/B150M: Governs the production of aluminum bronze rods, bars, and shapes, ensuring consistency in temper (e.g., HR50, M10) and mechanical performance .
- ASTM B111/B111M: Covers seamless condenser and heat exchanger tubes, including C61300, with guidelines for nondestructive testing (eddy-current, hydrostatic) and corrosion resistance validation .
- EN 12449: Standardizes seamless round tubes for general purposes, aligning with EU requirements for OD, wall thickness, and tolerances .
Chemical Composition (ASTM B169M-2005 Standard)
C61300 is an aluminum bronze alloy with the following chemical composition ranges (by weight %):
Key Notes:
- The alloy is primarily composed of copper and aluminum, with iron and tin as critical secondary elements .
- Strict impurity limits (e.g., Pb ≤ 0.01%) ensure high corrosion resistance and mechanical integrity .
Mechanical Properties
C61300 exhibits excellent mechanical performance, with variations depending on processing conditions (e.g., hot/cold working, annealing). Below are typical values and standard specifications:
A. Typical Mechanical Properties
Notes:
- Higher tensile strength (up to 690 MPa) is achievable through cold working or heat treatment .
- The ASME Boiler and Pressure Vessel Code specifies minimum requirements for thickness-dependent properties (e.g., tensile strength ≥ 515 MPa for thickness ≤ 12 mm) .
B. ASME BPV Code (SI Units) Mechanical Requirements
Source: ASME Boiler and Pressure Vessel Code, Table 3 (SI Units) .
Physical Properties
Key Performance Characteristics
- Wear Resistance: Ideal for bearings, gears, and heavy-load components due to low surface wear rates .
- Corrosion Resistance: Resists seawater, acids, and industrial chemicals, making it suitable for marine and chemical industries .
- Machinability: Machinability rating of 30 (on a scale where 100 = free-cutting brass) .
- Weldability: Compatible with TIG, MIG, and brazing techniques; oxy-acetylene welding is not recommended .
Production process and product advantages of C61300 copper tube:
1. Production process
Raw material melting and casting
Use an industrial frequency furnace to melt cathode copper and phosphor copper alloy at 1200℃, and then form it through horizontal continuous casting process. Horizontal continuous casting technology can ensure the uniformity and high precision of copper tubes and improve the efficiency of subsequent processing.
Combination of hot and cold processing
The cast copper tube is water-cooled to 50℃, followed by milling, planetary rolling (such as planetary tube rolling method), triple drawing, coil drawing and other processes to achieve tube forming and size control.
It has excellent performance in cold processing (such as cold heading, thread rolling, stretching) and hot processing (hot forging, hot rolling), and is suitable for processing complex shapes.
Welding and heat treatment
It supports argon arc welding, flash welding and copper welding, but gas welding, tin welding and electroslag welding are not recommended.
The annealing process is carried out in the range of 606–871℃ to optimize the toughness and processing performance of the material.
Surface treatment and testing
The quality of the finished product is ensured through online annealing, surface cleaning, rewinding (defect detection) and other processes.
2. Product advantages
Excellent mechanical properties
Tensile strength is as high as 515–450 MPa (depending on thickness), yield strength (0.2% elongation) is 180–235 MPa, and elongation is ≥35%, with both high strength and good ductility.
Rockwell hardness B-80, shear strength of about 320 MPa, suitable for high-load scenarios.
Excellent corrosion resistance
Performs well in marine environments, chemical equipment and food processing, resistant to sulfuric acid corrosion, but not suitable for nitric acid environments.
Diverse processing adaptability
Balanced hot and cold processing performance, can be stamped, stretched, bent, cold heading and other forming processes.
Cutting performance is 30%, suitable for precision parts processing.
Wide range of applications
Used in condenser tubes, marine composite plates, fasteners (bolts, nuts), bearings, gears and other key components.
In heat exchangers, its high thermal conductivity (32 Btu/ft²·ft/hr·°F) can improve heat transfer efficiency, save materials and reduce equipment size
Environmental protection and economy
Waste materials (copper chips, scraps) and waste liquids (emulsions, mineral oils) in the production process can be recycled and meet environmental protection standards.
The material has a long life and reduces maintenance costs, especially suitable for marine engineering and chemical equipment.
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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