WECOBA® 270
ALUMINIUM BRONZE
WECOBA® 270 is designed for applications requiring maximum strength wear resistance and corrosion resistance. The alloy combines hardness toughness and ductility within a balanced property profile and is suitable for critical components where mechanical performance must be maintained at elevated temperatures.
HEAVY INDUSTRY | GENERAL ENGINEERING | MARITIME AND OFFSHORE | OIL & GAS | FOOD INDUSTRY
Key Features
High strength and hardness suitable for extreme mechanical loads and elevated temperatures
Balanced combination of toughness and ductility for highly loaded components
Very good corrosion wear and heat resistance
Good sliding properties ensuring reliable performance at low and high contact pressures
Proven performance under extreme operating conditions including marine applications and high-performance components
Performance exceeding standard nickel aluminum bronzes with extended service life and increased reliability
Chemical Composition nominal
Deviations may occur to achieve specific product characteristics.
Al ALUMINIUM | Fe IRON | Ni NICKEL | Mn MANGANESE | OTHERS | Cu COPPER |
10.8 | 5.0 | 5.4 | 1.0 | max. 0.5 | balance |
EN | DIN | UNS |
- | - | - |
WECOBA® Specification | ||
AMS4590 | ||
Typical Application
Components with highest requirements for strength wear resistance and impact loading
Components required to withstand high pressure and or elevated temperatures
Components with highest requirements for corrosion cavitation and erosion resistance
Typical Components
Bearings, bushings, shafts, journal bearings and gears
Valves, valve seats, flanges and high-temperature steam fittings
Sliding elements, wear parts and guide strips
Physical and Mechanical Properties nominal
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| FORGED ROUND | FORGED PLATE | EXTRUDED DIA >25.4mm AMS4590 |
Tensile strength Rm | (MPa) | 840 | 780 | 980 |
Yield strength RP0.2 | (MPa) | 510 | 445 | 740 |
Brinell hardness | (10/3000) | 270 | 260 | 280 |
Elongation A5 | (%) | 7 | 5 | 8 |
Elasticity modulus E | (GPa) | 124 | 112 | 124 |
Compression strength Rmc | (MPa) | 1310 | 1150 | 1310 |
Density ρ | (g/cm³) | 7.6 |
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Thermal conductivity λ- 20°C | (W/m.K) | 40 |
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Electrical conductivity- 20°C | (% I.A.C.S.) | 10 |
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Coefficient of thermal expansion α | (10-6/K) | 16 |
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Specific heat cp | (J/g.K) | 0.42 |
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The values provided are based on experience gained from production facilities, material manufacturers and our own investigations. They may vary due to production- and batch-related influences and therefore do not constitute a guarantee or a warranted property. For the evaluation of specific applications, we are pleased to provide support upon request. Binding statements or commitments are issued exclusively in written form by our technical team. Rev. 02/2025
