(UNS C62300 | ASTM B148 | SAE CA623 | ISO 427)
90% Cu · 9% Al · 3% Fe · Saltwater Warrior · High-Strength Bearing Alloy
Product Overview: The Corrosion Conqueror
When Rolls-Royce crafts marine propeller shafts or Flowserve engineers seawater pump impellers, they rely on C62300 Aluminum Bronze. This alloy combines 10x the wear resistance of standard bronze with unmatched saltwater corrosion protection. Its unique aluminum-iron matrix withstands 10+ years in offshore rigs while maintaining 550 MPa tensile strength – outperforming stainless steel in high-wear marine environments.
Technical Parameters
| Property | C62300 Value | C95400 Bronze | 316 Stainless |
|---|
| Composition | Cu 86-89% | Cu 85% | Fe 67% |
| Al 8.5-10.5% | Al 11% | Cr 17% |
| Fe 2.0-4.0% | Fe 4% | Ni 12% |
| Tensile Strength | 550-690 MPa | 620 MPa | 515 MPa |
| Corrosion Rate | 0.02 mm/yr (seawater) | 0.03 mm/yr | 0.05 mm/yr |
| Wear Resistance | 10x C95400 | Baseline | 3x C95400 |
| Thermal Conductivity | 59 W/m·K | 42 W/m·K | 16 W/m·K |
| Pressure Rating | 2.500 psi | 2.000 psi | 3.000 psi |
Certifications: ASTM B148. NACE MR0175. ABS Type 2. Lloyd's Register, DNV-GL
3 Unbeatable Advantages
Ocean-Proof Durability
Survives 20+ years in seawater (per NACE testing) – 5x longer than phosphor bronze.
Extreme Load Capacity
690 MPa yield strength handles 4x more shock load than C93200 bearing bronze.
Heat Resilience
Maintains strength at 400°C (752°F) – critical for thermal power plant valves.
Critical Engineering Features
Gall Resistance: 40% lower friction coefficient vs. nickel-aluminum bronze
Cavitation Resistance: Withstands 15 m/s fluid velocity in pump impellers
Biological Fouling Resistance: Inhibits barnacle/mussel adhesion
Stress-Corrosion Immunity: Zero cracking in H₂S environments (NACE MR0175 certified)
Precision Manufacturing Process
1 Controlled Atmosphere Melting
90% recycled copper + Al/Fe additives → argon-shielded at 1.150°C.
2 Centrifugal Casting
Spin-cast for uniform grain structure in thick sections.
3 Hot Forging
850°C hydraulic press forming for propellers/gears.
4 Solution Treatment
Water quenching @ 675°C for optimal β-phase distribution.
5 Aging & Finishing
Precision machining + shot peening for -30% surface porosity.
Core Applications
| Industry | Critical Components | Compliance Standards |
|---|
| Marine | Propeller shafts, rudder bearings | ABS Type 2. Lloyds Register |
| Oil & Gas | Subsea valve trim, Christmas trees | NACE MR0175. API 6A |
| Power Generation | Turbine blades, cooling system parts | ASME B31.1. EN 12516 |
| Mining | Crusher jaws, slurry pump liners | ISO 9001. MSHA 30 CFR |
| Aerospace | Landing gear bushings, actuator arms | AMS 4890. MIL-B-24480 |
Top Search Keywords:
C62300 bronze price | Aluminum bronze propellers | Marine bronze alloy | ASTM B148 C62300
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