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Dimensional Specifications for C95400 Copper Tubes
C95400 tubes are available in the following dimensions (specific to tubular forms):
Note: Tolerances and specific wall thicknesses depend on manufacturing methods and standards (e.g., ASTM B505 for continuous casting, ASTM B271 for centrifugal casting)
International Standards for C95400 Copper Tubes
C95400 tubes comply with the following key standards:
ASTM Standards
- ASTM B505/B505M: Specifies requirements for continuous cast copper alloy rods, bars, tubes, and shapes .
- ASTM B271/B271M: Covers centrifugal castings for copper-base alloy tubes, emphasizing mechanical properties and dimensional tolerances .
- ASTM B148: Standard for sand-cast aluminum bronze components, including valve bodies and pump parts .
ASME Standards
- ASME SB505/SB271: Adopted from ASTM standards for boiler and pressure vessel applications .
Other Equivalent Standards
- SAE J461/J462: Defines material properties for automotive and industrial components .
- EN 1982-2008 (CC331G): European standard for aluminum bronze castings .
- BS1400 AB1: British standard for sand-cast aluminum bronze .
- JIS H3300: Japanese standard for copper alloy seamless tubes (applies to similar alloys)
Detailed Chemical Composition of C95400 Copper Alloy
C95400 is an aluminum bronze alloy standardized by the Copper Development Association (CDA) in the United States. Its chemical composition adheres to the ASTM B505/505M specifications. Below is the detailed composition in weight percentages (wt%):
Notes:
- The alloy is also referred to as nickel-aluminum bronze due to the presence of nickel.
- Minor impurities (e.g., lead, silicon) are restricted to trace levels to ensure performance
Mechanical Properties of C95400 Copper Alloy
C95400 exhibits a combination of high strength, wear resistance, and corrosion resistance. Below are the mechanical properties under both as-cast and heat-treated conditions:
1. Standard Mechanical Properties (As-Cast):
2. Enhanced Mechanical Properties (Heat-Treated):
Heat treatment (quenching and tempering) significantly improves strength:
Additional Mechanical Characteristics:
- Fatigue Strength: ~240 MPa (under cyclic loading) .
- Compressive Strength: 940–1070 MPa .
- Elastic Modulus: 110 GPa .
- Poisson’s Ratio: 0.316 .
Production process of C95400 copper tube
I. Core production process flow
The production process of C95400 copper tube combines traditional copper processing technology with modern precision manufacturing technology. Its process can be divided into the following key links:
Raw material refining and alloying
Electrolytic copper (purity ≥99.9%) is used as the base metal, and alloy elements such as aluminum (10-11.5%), iron (3-5%), and nickel (≤1.5%) are accurately added through medium frequency furnace smelting. The smelting temperature is controlled at 1100-1200℃, and argon protection is used to prevent oxidation.
Continuous casting
The liquid alloy is formed into a tube billet by a horizontal continuous casting machine, and the cooling rate is strictly controlled at 5-10℃/second to optimize the grain structure. The diameter error of the billet must be ≤0.5mm, and the surface roughness Ra≤3.2μm.
3. Hot extrusion forming
After the billet is heated to 950℃, it enters the three-way extruder, using graphite-based lubricants, and the extrusion ratio reaches 20:1. This process enables the tube to obtain preliminary mechanical properties, and the tensile strength is increased to 500MPa level.
4. Planetary rolling and multi-stage drawing
A 60% wall thickness reduction rate is achieved on the planetary rolling mill, followed by gradual finishing through triple stretching (reduction rate 30%) and disc stretching (reduction rate 15%). Intermediate annealing (650℃×2h) is required between each pass to eliminate work hardening.
Precision heat treatment
The finished product annealing adopts a two-stage process: first, stress is eliminated at 550℃×4h, and then the hardness is stabilized in the range of HRC 19-22 through aging treatment (300℃×6h).
Surface finishing
Including electrolytic polishing (surface roughness Ra≤0.8μm), titanium nitride coating (thickness 2-5μm) and other treatments to meet the requirements of mirror-grade molds.
2. Key technical innovations
Compound lubrication technology: Graphite-nano-alumina composite lubricant is used in the drawing process, the friction coefficient is reduced to 0.08, and the surface finish is improved by 30%
Intelligent temperature control system: PID algorithm is used to control the uniformity of the temperature field of the annealing furnace (±3℃) to ensure the consistency of material performance
Online detection system: integrated eddy current flaw detection (detection accuracy 0.1mm² defect), laser diameter measurement (accuracy ±0.01mm) and other real-time monitoring methods
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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