Cast Aluminum Bronze C95400
The general-purpose cast aluminum bronze — 85 ksi as cast, 95 ksi heat treated — for heavy-duty bushings, gears, valve seats and wear parts.
What C95400 Aluminum Bronze is.
C95400 is the most widely used cast aluminum bronze. With 11 percent aluminum and 4 percent iron it reaches 85 ksi tensile as cast and can be quench-and-temper heat treated to 95 ksi, giving it the strength for heavily loaded bushings, worm gears, valve seats and forming dies. Corrosion resistance in seawater and mild acids is excellent, and the alloy is non-sparking.
We machine C95400 components from certified B505 continuous-cast bar, as cast or heat treated (C95400HT).
Chemical composition.
| Element | Symbol | Min % | Max % |
|---|---|---|---|
| Copper | Cu | 83.0 | — |
| Aluminium | Al | 10.0 | 11.5 |
| Iron | Fe | 3.0 | 5.0 |
| Nickel (incl. cobalt) | Ni | — | 1.5 |
| Manganese | Mn | — | 0.50 |
Values per ASTM B505/B505M-23 Table 10, Chemical Requirements (verified against the specification); B505 Table 11 requires the named elements to total 99.0 % (C93200) or 99.5 % (C95400, C95500) minimum. Confirm the edition called out on your purchase order with our estimating team.
Mechanical properties.
| Condition | Tensile strength, min (ksi) | Yield strength at 0.5 % extension, min (ksi) | Elongation, min (%) |
|---|---|---|---|
| As cast | 85 | 32 | 12 |
| Heat treated (C95400HT) | 95 | 45 | 10 |
Values per ASTM B505/B505M-23 Tables 1 and 9 (verified against the specification). Confirm the edition called out on your purchase order with our estimating team.
Specifications that apply.
How C95400 Aluminum Bronze ships from Houston.
- Heavy-duty bushings and bearings
- Worm gears and wear plates
- Valve seats, guides and stems
- Forming dies and non-sparking tooling
- Certified B505 solid and cored bar
C95400 Aluminum Bronze fasteners we make.
Every item is manufactured to your drawing or standard in C95400 Aluminum Bronze, imperial or metric, with an EN 10204 3.1 certificate.
What is C95400 aluminum bronze?
C95400 is a two-phase aluminum bronze whose iron addition refines the grain and adds strength. As cast it is already stronger than most bronzes; a quench from about 1600 °F followed by a temper transforms part of the structure and adds a further 10 ksi. It resists wear, galling and cavitation and holds up in seawater and many acids, though for the most aggressive marine service the nickel-bearing C95500 is preferred.
As-cast or heat treated?
Order the as-cast condition for bushings and general wear parts; order C95400HT where the extra yield strength and hardness are needed, such as dies, heavily loaded gears and valve seats. Both conditions are machined from the same B505 bar; the heat treatment is applied to the bar before machining.
Testing, certification and marking
- Tensile and hardness tested per lot on the finished product
- Grade or alloy marking by UNS number, condition and heat on the certificate and manufacturer's identification on every piece
- EN 10204 3.1 material test report with heat number and chemistry; 3.2 witness available
- Alloy identified by UNS number on the certificate
Cast Nickel-Aluminum Bronze C95500
The strongest common cast bronze — 95 ksi as cast, 110 ksi heat treated — for propeller hubs, seawater valve bodies, gears and the heaviest wear applications.
ASTM B505 continuous-cast barBearing Bronze C93200 (SAE 660)
The workhorse bearing bronze — SAE 660 — for bushings, thrust washers and wear parts machined from continuous-cast bar.
ASTM F468 / F467 fasteners · ASTM B150 rod and barNickel-Aluminum Bronze C63000
Steel-like strength in a bronze — 100 to 130 ksi as a fastener — with seawater, cavitation and wear resistance for propellers, pumps, valve seats and subsea hardware.