Copper Alloy C92400
UNS C92400
C92400 is a general-purpose leaded tin bronze casting alloy (Cu-Sn-Pb-Zn) used where pressure tightness and easy machining matter more than peak strength.
Reference datasheet — C92400 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
C92400 tempers and conditions
C92400 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 casting condition for valve bodies, flanges and fittings needing pressure tightness. | 150 | 295 | 18 | 80 HB | 12 % IACS |
As centrifugally cast | Pick for rings, sleeves and hollow cylinders where centrifugal casting gives denser, cleaner metal than sand casting. | 165 | 310 | 16 | 82 HB | 12 % IACS |
As pressure die cast | Use for repeat-production small fittings where faster solidification raises strength and improves surface finish. | 165 | 310 | 14 | 85 HB | 12 % IACS |
As continuous cast | Stock form for bar, tube and hollow bushings machined from continuous-cast bronze (ASTM B505), with the highest strength and best soundness. | 172 | 325 | 14 | 85 HB | 12 % IACS |
What is C92400?
C92400 is a general-purpose leaded tin bronze casting alloy (Cu-Sn-Pb-Zn) used where pressure tightness and easy machining matter more than peak strength. Typical values are 150 MPa yield, 295 MPa tensile, 18 % elongation and 80 HB, with service to 250 °C, and it is poured as sand, permanent-mould and centrifugal castings. Limits are poor fusion weldability from lead and tin hot-shortness, and the lead content rules it out where lead-free alloys are mandated. C87400 silicon brass is the usual lead-free substitute for valve and fitting bodies. C92400 has a density of 8.83 g/cm³ (0.319 lb/in³), heavier than 65% of copper alloy grades. It melts at 854°C (1,569 °F). C92400 has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 295 MPa (42.8 ksi) — weaker than 69% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 103 GPa (14.9 Msi).
What is C92400 used for?
- valve bodies
- pipe fittings
- pump castings
Advantages
- Easy to machine — 75/100, better than 80% of copper alloy grades
Limitations
- Hard to polish — 60/100, worse than 92% of copper alloy grades
- Difficult to weld — 20/100, worse than 88% of copper alloy grades
- High embodied carbon — 4.6 kg CO₂/kg, worse than 82% of copper alloy grades
- Limited formability — 15/100, worse than 79% of copper alloy grades
C92400 properties
Typical room-temperature values for C92400-M01; bars are the position among copper alloy grades.
Physical3
C92400 has a density of 8.83 g/cm³ (0.319 lb/in³), heavier than 65% of copper alloy grades. It melts at 854°C (1,569 °F).
Mechanical15
C92400 has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 295 MPa (42.8 ksi) — weaker than 69% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
C92400 is rated for continuous service to 250°C (482 °F). It conducts heat at 47 W/m·K (27.2 BTU/hr·ft·°F), worse than 69% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
C92400 conducts electricity at 12 % IACS, worse than 62% 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 C92400 takes about 65 MJ of energy and emits 4.6 kg of CO₂ — more than 81% of copper alloy grades. Typical recycled content is 75%.
Manufacturability8
C92400's machinability is very good (75/100, better than 80% of copper alloy grades); weldability poor (20/100); formability poor (15/100).
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. C92400 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C92400
Is C92400 easy to machine?
Free-machining with the lead phase — use sharp positive-rake carbide or HSS tools, high speed, light feed, and expect short chips and good surface finish.
Can C92400 be welded?
Poor fusion weldability due to lead and tin hot-shortness; repair by brazing or by low-heat gas/TIG with matching tin-bronze filler and preheat, or by soldering.
Can C92400 be formed, bent or molded?
Casting alloy only — good fluidity and dross-free pouring around 1120–1180 °C; rely on directional solidification and risering to control interdendritic shrinkage; not cold formable.
C92400 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 | 9 – 11 | 10 |
| Pb | 1 – 3 | 2 |
| Zn | 1 – 3 | 2 |
| Niincl. Co | ≤ 1 | |
| Fe | ≤ 0.25 | |
| Sb | ≤ 0.25 | |
| P | ≤ 0.05 | |
| S | ≤ 0.05 | |
| Al | ≤ 0.01 | |
| Si | ≤ 0.01 | |
| Cu | ≥ 86 (balance) |
What surface finishes work on C92400?
Takes tin, nickel or chrome plating well and solders easily; chemical patination/lacquer for decorative parts; anodizing not applicable.
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 C92400 cost?
C92400 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.
C92400 — frequently asked
What is C92400 used for?
C92400 is typically used for valve bodies, pipe fittings and pump castings. In short: free-machining cast bronze; pressure-tight valve alloy; solders and plates easily.
What is the yield strength of C92400?
C92400 has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 295 MPa (42.8 ksi) — weaker than 69% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C92400 easy to machine?
Yes — machinability is rated very good (75/100, better than 80% of copper alloy grades). Free-machining with the lead phase — use sharp positive-rake carbide or HSS tools, high speed, light feed, and expect short chips and good surface finish.
Can C92400 be welded?
Not readily — weldability is rated poor (20/100). Poor fusion weldability due to lead and tin hot-shortness; repair by brazing or by low-heat gas/TIG with matching tin-bronze filler and preheat, or by soldering.
What surface finishes work on C92400?
Takes tin, nickel or chrome plating well and solders easily; chemical patination/lacquer for decorative parts; anodizing not applicable.
Can C92400 be formed, bent or molded?
Casting alloy only — good fluidity and dross-free pouring around 1120–1180 °C; rely on directional solidification and risering to control interdendritic shrinkage; not cold formable.
What is the maximum service temperature of C92400?
C92400 is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C92400-M01 and C92400-M07?
M01 is the default condition — standard ASTM B584 sand casting condition for valve bodies, flanges and fittings needing pressure tightness. M07: stock form for bar, tube and hollow bushings machined from continuous-cast bronze (ASTM B505), with the highest strength and best soundness. Yield strength is 150 MPa in M01 versus 172 MPa in M07.
How much does C92400 cost?
C92400 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 Standard Specification for Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M Standard Specification for Copper Alloy Continuous Castings — ASTM International (2018)
- CDA Standard Designation C92400 alloy datasheet — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.