What is C72900 ToughMet 3?
C72900 ToughMet 3 is a high-performance copper-nickel-tin spinodal alloy used for demanding bearing, bushing, wear, oil and gas, aerospace, and heavy equipment applications. ToughMet 3 is commonly specified when designers need high strength, galling resistance, corrosion resistance, and non-magnetic behavior.
ToughMet 3 is a specialty alloy family rather than a commodity bearing bronze. Properties depend on the supplied condition, such as AT110, and should be matched to the Materion or drawing specification before quoting.
Common Names and Cross References
| Name or designation | How it is commonly used |
|---|---|
| C72900 | UNS alloy designation |
| ToughMet 3 | Common trade name |
| Copper-nickel-tin alloy | Alloy family description |
| Spinodal copper alloy | Heat-treatment and metallurgy description |
Chemical Composition (%)
| Element | Minimum | Maximum | Nominal |
|---|---|---|---|
| Copper (Cu) | - | - | About 77 |
| Nickel (Ni) | - | - | About 15 |
| Tin (Sn) | - | - | About 8 |
Mechanical, Electrical, and Physical Properties
Values below reflect common ToughMet 3 AT110 datasheet values. Other conditions may differ.
| Property | Typical published value |
|---|---|
| Ultimate tensile strength | 125,000 psi minimum |
| Yield strength | 110,000 psi minimum |
| Elongation | 6-10% |
| Hardness | About 30 HRC |
| Fatigue strength | About 60,000 psi at 10 million cycles |
| Elastic modulus | About 21 x 10^6 psi |
| Density | 0.325 lb/in3 |
| Electrical conductivity | Less than 7% IACS |
| Thermal conductivity | About 22 Btu/(hr-ft-F) |
| Magnetic permeability | Less than 1.001 |
Machining and Fabrication Notes
| Operation or property | Notes |
|---|---|
| Machining | Commonly described as excellent for complex components |
| Heat treatment | Properties depend on spinodal hardening condition |
| Cold work and forming | Confirm against the supplied condition and drawing |
| Welding | Not a generic substitute for standard weldable bronzes; confirm with the alloy supplier and application |
Typical Applications for ToughMet 3
- High-load bushings, bearings, and wear components.
- Oil and gas drilling and downhole components.
- Aerospace and heavy equipment bearing applications.
- Non-magnetic, corrosion-resistant, and anti-galling components.
- Replacement for higher-maintenance bronze or beryllium copper parts where specified.
RFQ Details for C72900 ToughMet 3 Parts
Send the C72900 or ToughMet 3 callout, required condition such as AT110, dimensions, quantity, hardness or strength requirements, operating environment, certification needs, and drawings. Because this is a specialty alloy, confirm availability and lead time before treating it like standard bearing bronze.
Available Forms
Available Forms and Shapes
Review common product forms for C72900 ToughMet 3, then send drawings, dimensions, quantity, and finished-part requirements for material and production guidance.
Bronze Solid Bar
Bronze solid round bar and rod stock for machining bushings, bearings, pins, spacers, gears, and custom bronze parts.
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Bronze Cored Bar
Bronze cored bar and hollow bar stock for efficient machining of sleeve bushings, bearings, rings, and bronze components.
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Plain Bronze Sleeve Bushings
Plain bronze sleeve bushings and cast bronze sleeve bearings in C93200 SAE 660 and alternative alloys for radial load applications.
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Bronze Wear Plates
Bronze wear plates, guide strips, and graphite plugged wear plates for sliding surfaces, tooling, and heavy equipment.
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Custom CNC Bronze Parts
Custom CNC machined bronze components, bushings, lead screw nuts, wear parts, and replacement parts made from drawings or samples.
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