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Aluminum Bronze C95400

High-strength aluminum bronze alloy delivering outstanding wear, fatigue, and corrosion resistance for heavy-duty cast components.

Material Introduction

Aluminum Bronze C95400 is a high-strength copper-based alloy engineered for demanding copper die casting and precision-machined industrial components. Alloyed primarily with aluminum (≈10–11%) and iron/nickel modifiers, C95400 offers exceptional mechanical strength, excellent fatigue resistance, and superior corrosion performance—particularly in seawater, chemicals, and high-pressure fluid systems. The alloy forms a tough, aluminum-rich oxide layer that protects against abrasion and corrosion, making it ideal for heavy-load bushings, wear plates, pump components, industrial gears, marine hardware, and high-stress automotive systems. When produced through Neway’s optimized tool and die making systems, C95400 achieves low porosity, consistent microstructure, and outstanding dimensional stability for both medium- and high-volume manufacturing.

Alternative Material Options

For applications requiring extreme wear resistance or hardness, High-Strength Silicon Bronze C87300 offers enhanced abrasion resistance. If improved machinability and lower tool wear are priorities, Leaded Bronze C83600 is often chosen. For high-conductivity components, copper-rich alloys such as CuNi10Fe1 provide enhanced thermal and electrical performance. When cost efficiency is crucial for non-bearing housings or decorative hardware, Brass 380 may be the preferred choice. For extreme pressure and shock-load environments, specialty alloys like C99700 offer additional strength or corrosion advantages.

International Equivalent / Comparable Grade

Country/Region	Equivalent / Comparable Grade	Specific Commercial Brands	Notes
USA (ASTM/SAE)	C95400	Concast C95400, Materion C954, MetalTek C954	Reference aluminum bronze grade; widely used in industrial applications.
Europe (EN)	CuAl10Fe5Ni5 / CC333G	Wieland CC333G, Diehl Metall CuAl10Fe/Ni	Very close in strength class; used for heavy mechanical systems.
UK (BS)	AB2	Sarval AB2, Avon AB2	Traditional marine-grade aluminum bronze equivalent.
China (GB/T)	ZCuAl10Fe3 / ZCuAl10Fe3Ni	Local foundry aluminum bronzes	Used extensively for valves, pumps, and heavy wear components.
Japan (JIS)	CAC502 / CAC503	Mitsubishi / UACJ CAC series	Functional equivalent for structural bronze castings.

Design Purpose

C95400 was designed to withstand extreme mechanical loading, abrasive environments, and corrosive conditions that exceed the capability of standard tin or leaded bronzes. Aluminum and iron strengthen the microstructure, producing a highly wear-resistant alloy that can endure high shaft pressures, oscillating loads, and metal-to-metal contact with minimal deformation. Its protective alumina film provides excellent oxidation resistance, making it suitable for marine, chemical processing, and high-temperature industrial systems. Engineers select C95400 when parts must resist galling, seize-free motion, impact loads, or long-term fatigue exposure, while delivering structural stability and long service life.

Chemical Composition

Element	Copper (Cu)	Aluminum (Al)	Iron (Fe)	Nickel (Ni)	Manganese (Mn)	Silicon (Si)	Other
Composition (%)	~83–88	~10–11	~3–5	≤1.5	≤1.0	≤0.30	Trace

Physical Properties

Property	Density	Melting Range	Thermal Conductivity	Electrical Conductivity	Thermal Expansion
Value	~7.5–7.7 g/cm³	~1030–1060 °C	~25–35 W/m·K	~7–10% IACS	~16–18 µm/m·°C

Mechanical Properties

Property	Tensile Strength	Yield Strength	Elongation	Hardness	Fatigue Strength
Value	~620–750 MPa	~250–350 MPa	~8–12%	~150–190 HB	Excellent high-cycle fatigue resistance

Key Material Characteristics

Extremely high strength for a copper-based alloy.
Exceptional wear resistance suitable for high-load bearing surfaces.
Superior corrosion resistance in seawater, brine, chemicals, and industrial fluids.
Excellent fatigue performance under cyclic loading.
Low galling tendency in metal-to-metal sliding environments.
High stability under elevated temperatures.
Good castability for medium-complexity shapes.
Strong resistance to impact and shock loading.
Long service life even under harsh lubrication conditions.

Manufacturability And Post Process

Copper die casting: C95400 can be produced using precision copper die casting for medium-complexity geometries that require strong structural integrity and repeated loading performance.
Sand and gravity casting: Large or thick-walled components such as pump impellers or marine propeller hubs are commonly cast via sand casting for improved solidification control.
CNC machining: Although harder than tin bronze or leaded bronze, C95400 machines cleanly on CNC machining centers with carbide tooling, producing excellent dimensional accuracy for high-stress interfaces.
Heat treatment: Aging processes can further enhance strength or adjust hardness for bearing applications.
Drilling, reaming, and threading: Requires optimized feeds/speeds due to the alloy’s high strength; produces excellent precision with proper coolant management.
Surface conditioning: Tumbling and abrasive brushing improve surface finish and reduce high-stress peaks in wear parts.
Dimensional and structural inspection: Heavy-load components undergo CMM analysis, ultrasonic testing, and Neway’s advanced inspection systems to validate microstructure and internal soundness.

Suitable Surface Treatment

Nickel or hard chrome plating: Enhances wear resistance and improves the sliding characteristics of heavy-duty components.
Passivation / oxide sealing: Helps stabilize the naturally formed alumina layer for additional corrosion protection.
Oil impregnation: Used for sliding bearings and bushings to enhance lubricity.
Bead blasting: Produces uniform matte surfaces before machining or assembly.
Protective coatings: Applied to marine hardware to extend service life in aggressive seawater environments.
Laser marking: Ensures durable traceability for industrial and marine components.