C63000 Nickel Aluminum Bronze Round Bar | AMS 4640

Short Description:

Product Specifications
Name: C63000 Nickel Aluminum Bronze Round Bar (Rod)
Standard: ASTM B150, AMS 4640, RoHS Compliant, REACH Compliant
Material: UNS C63000 (CuAl10Ni5Fe4, ~10% Al, ~5% Ni, ~3-4% Fe)
Form: Hot extruded or hot forged round bars
Diameter: 10mm – 400mm (customizable)
Length: 1000mm – 4000mm (custom sizes available)
Surface: As extruded, turned/peeled, or precision ground/polished
Tolerances: Diameter ±0.5mm to ±2mm (depending on size), Length ±5mm, Straightness ≤0.5mm/m
Product Features:
•Exceptional high tensile strength and hardness combined with good ductility
•Outstanding corrosion resistance in seawater, saltwater, and aggressive chemical environments
•Superior wear and abrasion resistance under heavy loads and friction
•Excellent fatigue strength and toughness for shock/impact applications
•Non-sparking properties for safe use in explosive atmospheres
•Good hot formability, machinability, and weldability
•High load-bearing capacity and anti-galling performance when paired with steel
•Reliable performance in elevated temperatures and corrosive conditions
Application Field: Aerospace landing gear bushings and bearings, Marine propeller shafts, nuts, and hardware, Valve stems, guides, and seats, High-strength gears and cams, Pump impellers and wear components, Heavy-duty industrial bushings and bearings, Offshore oil & gas equipment, Fasteners and structural components in corrosive environments, Worm gears and actuator parts, Shipbuilding and desalination plant fittings

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C63000 Nickel Aluminum Bronze Round Bar – Process & Quality Assurance Statement
Our C63000 nickel aluminum bronze round bars are produced to deliver superior mechanical strength, corrosion resistance, and reliability in critical high-performance applications where failure is not an option.

Key process features

Manufacturing uses advanced hot working and heat treatment techniques to achieve dense, uniform bars with optimized microstructure:
●Alloy Melting: High-purity copper, aluminum, nickel, and iron are melted with precise control to achieve exact composition and clean melt.
●Casting & Hot Working: Semi-continuous casting followed by hot extrusion or forging produces dense blanks with minimal defects.
●Heat Treatment: Solution annealing and quenching (TQ50 or similar temper) to maximize strength, hardness, and toughness.
●Hot Reduction: Controlled hot working refines grain structure and achieves final dimensions.
●Stress Relieving: Optional tempering relieves residual stresses for improved stability.
●Finish Machining: Turning, peeling, or grinding delivers precise diameter and surface finish (Ra 1.6–3.2 μm typical).
●Cutting & Protection: Custom length cutting with clean ends; surfaces lightly oiled or wrapped to prevent oxidation during storage and shipping.

Quality control system

● Full traceability from raw material charge to finished bar
● Mill test certificates and material certificates supplied with every order
● Retained samples ≥3 years for independent verification (SGS, BV, TÜV, etc.)
● 100% inspection of critical parameters:
• Chemical composition (optical emission spectrometry)
• Mechanical properties (tensile ≥800 MPa typical, yield ≥400 MPa, hardness HB 180–240, impact testing)
• Dimensional accuracy (micrometers, ultrasonic gauges, straightness checks)
• Surface finish and defect inspection (visual + magnetic particle or dye penetrant)
• Internal soundness (ultrasonic testing on all bars)
● Conformance to or exceeding ASTM B150 and AMS 4640 requirements
● ISO 9001:2015 certified facility ensures every C63000 nickel aluminum bronze round bar delivers the consistent strength, durability, and performance required for your most demanding projects.