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  • C62400 Aluminum Bronze bar/rod

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C62400 Aluminum Bronze bar/rod
C62400 is a high-performance aluminum bronze alloy primarily composed of copper (Cu), aluminum (Al), and iron (Fe), with trace amounts of tin (Sn), manganese (Mn), and silicon (Si).

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Parameter
Chemical Composition
Mechanical Properties

Dimensional Specifications

C62400 rods are available in round bars with the following size ranges:

  • Diameter:
    • Metric: 5 mm to 300 mm (commonly stocked) .
    • Imperial: 1/2" to 3" (12.7 mm to 76.2 mm) .
  • Length: Standard lengths up to 144" (3.66 meters), though custom lengths are negotiable with manufacturers .

Tolerances: Governed by ASTM/ASME standards for roundness, straightness, and surface finish .

Mechanical Properties

PropertyValue
Tensile Strength655 MPa (min) / 95 ksi
Yield Strength (0.5% ext.)310–350 MPa / 45–50 ksi
Elongation10–14% (in 50 mm gauge length)
Hardness (Rockwell B)87–92 HRB
Fatigue Strength234–248 MPa
Note: Strength slightly decreases with larger diameters, while hardness and ductility remain stable .

 International Standards

C62400 rods comply with the following key standards:

  • ASTM B150/B150M-19: Specifies chemical composition, temper (e.g., HR50 drawn and stress-relieved), mechanical properties, and dimensional tolerances for aluminum bronze rods .
  • ASME SB-150/SB-150M: Aligns with ASTM standards for use in pressure vessels and boilers, ensuring certification and mill test reports .
  • SAE J461/J463: Covers wrought copper alloys for automotive and industrial applications .
  • AWS A5.7: Governs welding wire applications .

Key Compliance Requirements:

  • Mandatory heat treatment (annealing at 1100–1200°F / 593–649°C) .
  • Strict limits on residual stress and surface defects .

6. Physical & Thermal Properties

PropertyValue
Density7.45–7.68 g/cm³
Melting Range1025–1040°C (1880–1900°F)
Thermal Conductivity59 W/m·K
Electrical Conductivity0.07 MegaSiemens/cm
Thermal Expansion15.6 × 10⁻⁶/°C (20–300°C)
Suitable for applications requiring thermal stability and electrical neutrality .

Chemical Composition

C62400 Aluminum Bronze is a copper-based alloy primarily composed of copper (Cu), aluminum (Al), iron (Fe), and controlled trace elements. The precise composition adheres to ASTM B150/B150M standards and is as follows:

ElementComposition Range (%)Notes
Copper (Cu)Balance (82.8–88.0%)Includes silver (Ag) impurities .
Aluminum (Al)10.0–11.5Key strengthening element .
Iron (Fe)2.0–4.5Enhances hardness and wear resistance .
Tin (Sn)≤0.20Improves corrosion resistance .
Manganese (Mn)≤0.30Aids in deoxidation and strength .
Silicon (Si)≤0.25Controls fluidity during casting .

Notes:

  • The total copper content (including Ag) must be ≥99.5% .
  • Trace impurities (e.g., Pb, Zn) are restricted to ensure optimal performance .

Mechanical Properties

C62400 exhibits exceptional mechanical properties, particularly in HR50 (drawn and stress-relieved) temper. Key values are standardized under ASTM B150/B150M-19:

A. Basic Mechanical Properties
PropertyValue (Minimum)Notes
Tensile Strength95 ksi (655 MPa)Decreases slightly with larger cross-sections .
Yield Strength (0.2% offset)45 ksi (310 MPa)Suitable for high-stress applications .
Elongation10% (in 2 inches)Maintains ductility despite high strength .
Hardness (Rockwell B Scale)180–195 HRBVaries with processing and section size .
B. Performance by Product Form

  • Extruded Rod (≤50 mm diameter):

    • Tensile Strength: 655 MPa
    • Yield Strength: 350 MPa
    • Elongation: 12%
    • Hardness: 180–195 HRB .

  • Extruded Rod (51–150 mm diameter):

    • Tensile Strength: 620 MPa
    • Yield Strength: 275 MPa
    • Elongation: 12% .

  • Forgings:

    • Tensile Strength: 650 MPa
    • Yield Strength: 340 MPa
    • Elongation: 12% .
C. Additional Mechanical Characteristics
  • Fatigue Resistance: Excellent under cyclic loading, ideal for gears and bearings .
  • Wear Resistance: Superior due to iron-aluminum intermetallic phases .
  • Impact Toughness: Retained even at subzero temperatures .
INTRODUCTION

Production process of C62400 copper rod:

Production process

Main process flow

Raw material processing: waste brass, waste copper and zinc ingots are used as raw materials, smelted in an industrial frequency furnace and slag remover is added to form copper liquid.

Continuous casting: The smelted copper liquid is treated in an insulation furnace and then continuously cast to form a copper rod blank.

Hot extrusion/reverse extrusion: The hot extrusion process (such as 38MN reverse extruder) is used to improve the density and strength of the material, which can cover the production needs of various grades. The weight of a single ingot is close to 1 ton, which significantly improves the yield rate.

Subsequent processing: including drawing, annealing (temperature range 1100°F to 1625°F) and other processes to optimize material properties.

Surface treatment: Ensure surface finish through peeling, grinding, cleaning and other steps.

FAQ

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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