Copper Alloy C92500
UNS C92500
C92500 is a cast tin bronze from the C90000–C95999 family, alloyed with nickel and phosphorus to raise strength, wear resistance and pressure-tightness over plain tin bronzes.
Reference datasheet — C92500 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the M01 condition
C92500 tempers and conditions
C92500 is supplied in 4 conditions, soft to hard. M01 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01Default As sand cast | Standard ASTM B584 sand-cast condition for gears, worm wheels and pressure-tight housings. | 152 | 303 | 20 | 80 HB | 11 % IACS |
As plaster cast | Used for repeat-run small gear blanks and glands where chill casting gives tighter tolerance and finer grain than sand. | 165 | 320 | 15 | 85 HB | 11 % IACS |
As centrifugally cast | Pick for bushings, sleeves and worm-gear rims needing dense, porosity-free wall sections. | 172 | 330 | 15 | 85 HB | 11 % IACS |
As continuous cast | Continuous-cast bar/tube stock — finest grain and highest strength/hardness, best for machined bearings and nuts. | 193 | 345 | 12 | 90 HB | 11 % IACS |
What is C92500?
C92500 is a cast tin bronze from the C90000–C95999 family, alloyed with nickel and phosphorus to raise strength, wear resistance and pressure-tightness over plain tin bronzes. In the default condition it gives 152 MPa yield, 303 MPa tensile, 20 % elongation and 80 HB, with service to 260 °C, so it is specified for gears, bearings and pressure-containing castings produced by sand, permanent-mold and centrifugal casting. It is a cast-only alloy with a machinability rating of 55 — slower than the free-cutting leaded grades — and it is not reliably fusion weldable. Where higher strength and easier cutting are needed, C92900 is the nearest alternative. C92500 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 831°C (1,528 °F). C92500 has a yield strength of 152 MPa (22 ksi) and a tensile strength of 303 MPa (43.9 ksi) — weaker than 67% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 103 GPa (14.9 Msi).
What is C92500 used for?
- gears
- bearings
- pump components
Advantages
- High service temperature — 260°C (500 °F), better than 75% of copper alloy grades
Limitations
- Limited formability — 5/100, worse than 98% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C92500 properties
Typical room-temperature values for C92500-M01; bars are the position among copper alloy grades.
Physical3
C92500 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 831°C (1,528 °F).
Mechanical13
C92500 has a yield strength of 152 MPa (22 ksi) and a tensile strength of 303 MPa (43.9 ksi) — weaker than 67% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal5
C92500 is rated for continuous service to 260°C (500 °F). It conducts heat at 46.7 W/m·K (27 BTU/hr·ft·°F), worse than 72% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
C92500 conducts electricity at 11 % IACS, worse than 68% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of C92500 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 60%.
Manufacturability8
C92500's machinability is good (55/100, better than 71% of copper alloy grades); weldability poor (25/100); formability not recommended (5/100).
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. C92500 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C92500
Is C92500 easy to machine?
Machines well with sharp positive-rake carbide or HSS tools at ~30 % of free-cutting brass; use light feeds and flood coolant, the phosphide phase is abrasive.
Can C92500 be welded?
Poor fusion weldability because of lead and hot-short tin-rich phase — repair by braze or by GTAW with matching phosphor-bronze filler, preheat 150–200 °C and peen.
Can C92500 be formed, bent or molded?
Cast-only alloy: use generous fillets, directional solidification and chills; not workable by cold forming.
C92500 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 |
|---|---|---|
| Sn | 10 – 12 | 11 |
| Pbaids machining and pressure-tightness | 1 – 1.5 | 1.2 |
| Niincludes Co | 0.8 – 1.5 | 1 |
| Zn | ≤ 0.5 | |
| Fe | ≤ 0.3 | |
| Pdeoxidizer, forms hard phosphide for wear resistance | ≤ 0.3 | 0.1 |
| Sb | ≤ 0.25 | |
| S | ≤ 0.05 | |
| Al | ≤ 0.01 | |
| Si | ≤ 0.01 | |
| Cu | balance |
What surface finishes work on C92500?
Takes a fine mechanical polish and readily accepts tin/nickel plating and soft solder; lacquer or wax if bright appearance must be kept.
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).
How much does C92500 cost?
C92500 is a high-cost copper alloy ($$$$), pricier than about 78% 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.
C92500 — frequently asked
What is C92500 used for?
C92500 is typically used for gears, bearings and pump components. In short: nickel-phosphorus tin bronze; pressure-tight gear bronze; cast-only wear alloy.
What is the yield strength of C92500?
C92500 has a typical yield strength of 152 MPa (22 ksi) and a tensile strength of 303 MPa (43.9 ksi) — weaker than 67% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C92500 easy to machine?
Reasonably — machinability is rated good (55/100, better than 71% of copper alloy grades). Machines well with sharp positive-rake carbide or HSS tools at ~30 % of free-cutting brass; use light feeds and flood coolant, the phosphide phase is abrasive.
Can C92500 be welded?
Not readily — weldability is rated poor (25/100). Poor fusion weldability because of lead and hot-short tin-rich phase — repair by braze or by GTAW with matching phosphor-bronze filler, preheat 150–200 °C and peen.
What surface finishes work on C92500?
Takes a fine mechanical polish and readily accepts tin/nickel plating and soft solder; lacquer or wax if bright appearance must be kept.
Can C92500 be formed, bent or molded?
Cast-only alloy: use generous fillets, directional solidification and chills; not workable by cold forming.
What is the maximum service temperature of C92500?
C92500 is rated for continuous use to about 260°C (500 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C92500-M01 and C92500-M07?
M01 is the default condition — standard ASTM B584 sand-cast condition for gears, worm wheels and pressure-tight housings. M07: continuous-cast bar/tube stock — finest grain and highest strength/hardness, best for machined bearings and nuts. Yield strength is 152 MPa in M01 versus 193 MPa in M07.
How much does C92500 cost?
C92500 is a high-cost copper alloy ($$$$), pricier than about 78% 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.
Sources
- ASTM B584 — Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM International (2018)
- ASTM B271 — Copper-Base Alloy Centrifugal Castings — ASTM International (2020)
- CDA Alloy Datasheet C92500 (copper.org) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
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.