Copper Alloy C95400
UNS C95400 · ASTM B148 C95400 · EN CuAl10Fe3
C95400 is a Cu-11Al-4Fe cast aluminium bronze supplied to ASTM B148 (equivalent ZCuAl10Fe3) as-cast, continuous cast or heat treated (HT/TQ50).
Values for the As Cast condition
C95400 tempers and conditions
C95400 is supplied in 3 conditions, soft to hard. As Cast is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As CastDefault sand/centrifugal cast, no heat treatment (ASTM B148 C95400) | Default stocked condition for gears, bushings and valve components where 586 MPa UTS and ~170 HB are sufficient. | 241 | 586 | 12 | 170 HB | 13 % IACS |
continuous/permanent-mould cast bar and tube (ASTM B505 C95400) | Choose for machined bushings and sleeves cut from bar/tube stock: finer, denser structure than sand cast with slightly higher strength and better machined-surface quality. | 262 | 620 | 12 | 175 HB | 13 % IACS |
quenched from ~870 °C and tempered ~600 °C (ASTM B148 C95400-HT) | Pick when maximum strength, hardness and wear resistance are needed (heavily loaded worm gears, dies, bearing sleeves) and when de-aluminification resistance must be improved. | 372 | 758 | 8 | 18 HRC | — |
What is C95400?
C95400 is a Cu-11Al-4Fe cast aluminium bronze supplied to ASTM B148 (equivalent ZCuAl10Fe3) as-cast, continuous cast or heat treated (HT/TQ50). It is used for worm gears, bushings, valve seats, die inserts, wear plates and pump or marine parts because it combines 586 MPa tensile strength, 241 MPa yield, 170 HB (87 HRB) and good resistance to wear, seawater and dilute acids, with quench-and-temper raising strength and hardness further. Conductivity is moderate (58.6 W/m·K, 13 % IACS), service temperature is about 300 °C, welding needs preheat and controlled temperature, and the high aluminium makes melting and pouring sensitive to alumina inclusions and dealuminification. C95500 is the higher-strength step up. C95400 has a density of 7.45 g/cm³ (0.269 lb/in³), lighter than 99% of copper alloy grades. It melts at 1,038°C (1,900 °F). C95400 has a yield strength of 241 MPa (35 ksi) and a tensile strength of 586 MPa (85 ksi) — stronger than 53% of copper alloy grades. Elongation at break is 12% and the elastic modulus is 110 GPa (16 Msi).
What is C95400 used for?
- Aluminum bronze gears and worm wheels
- Heavy-duty bushings and bearing sleeves
- Valve seats and valve components
- Wear plates and gib strips
- Forming die and press inserts
- Pump casings and impellers
- Marine shaft sleeves and hardware
Advantages
- Lightweight — 7.45 g/cm³ (0.269 lb/in³), better than 99% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Good corrosion resistance — 72/100, better than 84% of copper alloy grades
- Readily welded — 60/100, better than 76% of copper alloy grades
C95400 properties
Typical room-temperature values for C95400-As Cast; bars are the position among copper alloy grades.
Physical3
C95400 has a density of 7.45 g/cm³ (0.269 lb/in³), lighter than 99% of copper alloy grades. It melts at 1,038°C (1,900 °F).
Mechanical12
C95400 has a yield strength of 241 MPa (35 ksi) and a tensile strength of 586 MPa (85 ksi) — stronger than 53% of copper alloy grades. Elongation at break is 12% and the elastic modulus is 110 GPa (16 Msi).
Thermal6
C95400 is rated for continuous service to 300°C (572 °F). It conducts heat at 58.6 W/m·K (33.9 BTU/hr·ft·°F), worse than 63% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C95400 conducts electricity at 13 % IACS, worse than 58% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 84% of copper alloy grades.
Sustainability4
Producing a kilogram of C95400 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 50%.
Manufacturability8
C95400's machinability is fair (48/100, better than 68% of copper alloy grades); weldability good (60/100); formability poor (20/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. C95400 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C95400
Is C95400 easy to machine?
Machines at about 60 % of free-cutting brass: tough, gummy chips need sharp positive-rake carbide, rigid setup, moderate speed and generous coolant; HT material is harder and abrasive on tooling.
Can C95400 be welded?
GTAW/GMAW with matching aluminium-bronze filler (ERCuAl-A2) works well with 150–250 °C preheat and clean oxide removal; avoid oxyfuel and soldering because of the tenacious alumina film.
Can C95400 be formed, bent or molded?
Casting alloy — sand, centrifugal and continuous cast; use bottom gating and good filtering to keep alumina dross out, feed heavily due to high solidification shrinkage; not cold formable.
Manufacturability
The process limits FabDigit's quote engine applies to C95400. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Fair48 / 100 |
|---|---|
| ISO material group | N.5 |
| Cutting speed (rough / finish) | 180 / 220 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 6× diameter |
| Best surface (machined / polished) | Ra 1.6 / — |
| Hardenable after machining | No |
C95400 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Alprimary strengthening element | 10 – 11.5 | 11 |
| Fegrain refiner, forms κ phases | 3 – 5 | 4 |
| Mn | ≤ 0.5 | 0.2 |
| NiNi + Co | ≤ 1.5 | 0.3 |
| Si | ≤ 0.25 | |
| Zn | ≤ 0.5 | |
| Cu | ≥ 83 (balance) |
What surface finishes work on C95400?
Takes a good mechanical polish and develops a stable olive-brown patina; not anodizable — use passivation, lacquer or paint for appearance, and electroless nickel/chrome where extra wear resistance is needed.
Surface treatments FabDigit runs on copper alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Plating
Organic Coating
Equivalent designations
Standards and trade names that resolve to Copper Alloy C95400 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B148 C95400
- EN / DIN / Werkstoff-Nr.
- CuAl10Fe3
- Also called
- Cast Aluminum BronzeAluminum Bronze
- Other
- ZCuAl10Fe3Mn2
- Similar grades
- ZCuAl10Fe3
How much does C95400 cost?
C95400 is a specialty-cost copper alloy ($$$$$), pricier than about 59% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
C95400 — frequently asked
What is C95400 used for?
C95400 is typically used for aluminum bronze gears and worm wheels, heavy-duty bushings and bearing sleeves, valve seats and valve components, wear plates and gib strips, forming die and press inserts and pump casings and impellers. In short: shock-load bearing bronze.
What is the yield strength of C95400?
C95400 has a typical yield strength of 241 MPa (35 ksi) and a tensile strength of 586 MPa (85 ksi) — stronger than 53% of copper alloy grades. Strength varies by condition: see the 3 listed tempers.
Is C95400 easy to machine?
Reasonably — machinability is rated fair (48/100, better than 68% of copper alloy grades). Machines at about 60 % of free-cutting brass: tough, gummy chips need sharp positive-rake carbide, rigid setup, moderate speed and generous coolant; HT material is harder and abrasive on tooling.
Can C95400 be welded?
Yes — weldability is rated good (60/100). GTAW/GMAW with matching aluminium-bronze filler (ERCuAl-A2) works well with 150–250 °C preheat and clean oxide removal; avoid oxyfuel and soldering because of the tenacious alumina film.
What surface finishes work on C95400?
Takes a good mechanical polish and develops a stable olive-brown patina; not anodizable — use passivation, lacquer or paint for appearance, and electroless nickel/chrome where extra wear resistance is needed.
Can C95400 be formed, bent or molded?
Casting alloy — sand, centrifugal and continuous cast; use bottom gating and good filtering to keep alumina dross out, feed heavily due to high solidification shrinkage; not cold formable.
What is the maximum service temperature of C95400?
C95400 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C95400 As Cast and C95400-HT?
As Cast is the default condition — default stocked condition for gears, bushings and valve components where 586 MPa UTS and ~170 HB are sufficient. HT: pick when maximum strength, hardness and wear resistance are needed (heavily loaded worm gears, dies, bearing sleeves) and when de-aluminification resistance must be improved. Yield strength is 241 MPa in As Cast versus 372 MPa in HT.
How much does C95400 cost?
C95400 is a specialty-cost copper alloy ($$$$$), pricier than about 59% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Can FabDigit make parts in C95400?
Yes — C95400 is available for CNC machining with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B148 — Aluminum-Bronze Sand Castings — ASTM (2019)
- ASTM B505/B505M — Continuous Cast Copper Alloy Castings — ASTM (2018)
- CDA Alloy Datasheet C95400 (copper.org) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties of Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- GB/T 1176 (ZCuAl10Fe3) — SAC (2013)
- AMPCO 18 / aluminium bronze product data — AMPCO Metal (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.