When seawater eats steel bearings in months and 10.000-psi hydraulic systems demand zero failure, C61800 Aluminum Bronze steps in. This copper-aluminum-iron alloy (88% Cu, 10% Al, 2% Fe) laughs at salt spray while carrying crane loads that crush lesser metals. RoHS-exempt per Annex III 6c – it’s the backbone of offshore rigs, warship propellers, and mine pumps that outlive the equipment they serve.
TECH SPECS: ENGINEERED FOR BRUTAL ENVIRONMENTS
(ASTM B271 / UNS C61800 / RoHS Annex III Exempt)
| Property | C61800 | C93200 (SAE 660) | Stainless 316 |
|---|
| Composition | 88% Cu, 10% Al, 2% Fe | 83% Cu, 7% Sn, 7% Pb | 67% Fe, 17% Cr, 12% Ni |
| Tensile Strength | 655 MPa | 310 MPa | 515 MPa |
| Yield Strength (0.2%) | 290 MPa | 145 MPa | 205 MPa |
| Seawater Corrosion | 0.001 mm/yr | 0.08 mm/yr | 0.003 mm/yr |
| Cavitation Resistance | ★★★★★ | ★★☆☆☆ | ★★★☆☆ |
| Thermal Conductivity | 59 W/m·K | 45 W/m·K | 16 W/m·K |
Certifications: ASTM B271. ASME SB271. ABS Marine, Lloyds Register, NACE MR0175
5 REASONS ENGINEERS SLEEP BETTER WITH C61800
Corrosion Crusher
"0% galvanic corrosion after 20+ years in tidal zones – US Navy spec for submarine valve components."
Cavitation Killer
"Withstands 40 m/s fluid erosion in dredge pumps – lasts 8X longer than stainless steel."
Load Beast
"Handles 400 MPa stress in ore crusher sleeves – 3X the strength of leaded bronze."
Heat Warrior
"Keeps integrity at 425°C – outperforms brass in steel mill furnace bearings."
Downtime Destroyer
"Slash maintenance costs by 70%: Panama Canal lock bearings unchanged since 2015."
KEY FEATURES: BEYOND THE BROCHURE
Non-Sparking: Safe for explosive environments (MSHA/NEC Class I Div 1 certified)
Biofouling Resistance: Naturally inhibits marine growth on ship propellers
Embeddability: Traps abrasive particles in microstructure, protecting shafts
Fatigue Immunity: Withstands 500M+ cycles in hydraulic press linkages
PRECISION PROCESSING: FROM MOLTEN METAL TO MISSION-READY
1 Vacuum Arc Melting
"Cu-Al base alloyed under argon shield – near-zero porosity for critical marine parts."
2 Centrifugal Casting
"Spun at 2.000 RPM into dense impellers/bushings (±0.1mm dimensional tolerance)."
3 Solution Treatment
"Quenched at 850°C to lock in corrosion-resistant beta-phase microstructure."
4 CNC Machining
"Ground to Ra 0.4μm mirror finish – ready for high-pressure hydraulic seals."
WHERE IT DOMINATES: EXTREME APPLICATIONS
| Industry | Mission-Critical Components | Why C61800? |
|---|
| Offshore Oil | Subsea valve stems, drill bushings | Immune to H₂S sour gas & seawater |
| Marine | Propeller shafts, rudder bearings | Zero cavitation damage at 25+ knots |
| Mining | Slurry pump impellers, sleeves | Eats abrasive ores without wear |
| Power Gen | Hydroturbine wear rings | Survives 150 psi sand-laden water |
| Chemical | Acid pump components | Resists sulfuric acid up to 50% concentration |
Let's Talk About Your Project!
Please Feel free to give your inquiry in the form below. We will reply you in 24
hours.
