Copper Alloy C92600
UNS C92600
C92600 is a general-purpose leaded tin bronze casting alloy in the C90000–C95999 family, with lead added for chip breaking and pressure-tightness.
Reference datasheet — C92600 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
C92600 tempers and conditions
C92600 is supplied in 5 conditions, soft to hard. M01 is the default FabDigit quotes; the values on this page are for it.
Compare all 5 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 valve bodies, pump housings and general pressure castings. | 138 | 303 | 30 | 72 HB | 11.5 % IACS |
As investment cast | For small, complex near-net-shape parts with tight tolerance and fine surface finish. | 145 | 305 | 24 | 74 HB | 11.5 % IACS |
As plaster cast | Use for repeat production of small pressure parts where finer grain and better surface than sand casting are wanted (ASTM B806). | 150 | 310 | 22 | 78 HB | 11.5 % IACS |
As centrifugally cast | Choose for rings, sleeves and large bushings needing dense, sound wall sections (ASTM B271). | 152 | 315 | 22 | 78 HB | 11.5 % IACS |
As continuous cast | Best for machined bar/tube stock (bushings, wear rings) — dense, uniform, higher yield strength than sand cast (ASTM B505). | 165 | 310 | 14 | 80 HB | 12 % IACS |
What is C92600?
C92600 is a general-purpose leaded tin bronze casting alloy in the C90000–C95999 family, with lead added for chip breaking and pressure-tightness. Default-condition properties are 138 MPa yield, 303 MPa tensile, 30 % elongation, 72 HB, 11.5 % IACS conductivity and a machinability rating of 70, which suits valve bodies, pump housings and general castings made by sand, permanent-mold, centrifugal, investment or continuous casting. Fusion welding is not recommended because of the lead, and maximum service temperature is 260 °C. C92500 is the nearest choice when higher strength and wear resistance are required. C92600 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 854°C (1,569 °F). C92600 has a yield strength of 138 MPa (20 ksi) and a tensile strength of 303 MPa (43.9 ksi) — weaker than 76% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 100 GPa (14.5 Msi).
What is C92600 used for?
- valve bodies
- pump housings
- general castings
Advantages
- Easy to machine — 70/100, better than 78% of copper alloy grades
- Ductile — tolerates forming and impact — 30%, better than 75% of copper alloy grades
- High service temperature — 260°C (500 °F), better than 75% of copper alloy grades
Limitations
- Hard to polish — 65/100, worse than 87% of copper alloy grades
- Low stiffness — 100 GPa (14.5 Msi), worse than 82% of copper alloy grades
- Limited formability — 15/100, worse than 79% of copper alloy grades
- Low strength — 138 MPa (20 ksi), worse than 76% of copper alloy grades
- Poor heat conductor — 45 W/m·K (26 BTU/hr·ft·°F), worse than 76% of copper alloy grades
C92600 properties
Typical room-temperature values for C92600-M01; bars are the position among copper alloy grades.
Physical3
C92600 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 854°C (1,569 °F).
Mechanical14
C92600 has a yield strength of 138 MPa (20 ksi) and a tensile strength of 303 MPa (43.9 ksi) — weaker than 76% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 100 GPa (14.5 Msi).
Thermal6
C92600 is rated for continuous service to 260°C (500 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), worse than 76% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
C92600 conducts electricity at 11.5 % IACS, worse than 65% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (66/100), better than 64% of copper alloy grades.
Sustainability4
Producing a kilogram of C92600 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 70%.
Manufacturability7
C92600's machinability is very good (70/100, better than 78% of copper alloy grades); weldability poor (30/100); 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. C92600 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C92600
Is C92600 easy to machine?
Free machining for a tin bronze (≈70 % of C36000): use sharp positive-rake carbide or HSS, moderate speeds and soluble-oil coolant; chips break well thanks to the lead.
Can C92600 be welded?
Fusion welding is generally not recommended (lead causes hot cracking and porosity); repair by braze welding or silver brazing, soldering is excellent.
Can C92600 be formed, bent or molded?
A foundry alloy only — sand, permanent-mold, centrifugal, investment and continuous casting all work well; feed heavy sections to avoid tin inverse segregation and micro-shrinkage.
C92600 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 |
|---|---|---|
| CuCu + named elements ≥ 99.4 % | 86 – 88.5 | 87 |
| Sn | 9.3 – 10.5 | 10 |
| Zn | 1.3 – 2.5 | 2 |
| Pb | 0.8 – 1.5 | 1 |
| Niincl. Co | ≤ 1 | |
| Fe | ≤ 0.2 | |
| Sb | ≤ 0.25 | |
| S | ≤ 0.05 | |
| P | ≤ 0.05 | |
| Al | ≤ 0.01 | |
| Si | ≤ 0.01 |
What surface finishes work on C92600?
Takes a good mechanical polish and buff; can be tin-, nickel- or chromium-plated after thorough degreasing; naturally develops a brown patina, no anodizing.
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 C92600 cost?
C92600 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.
C92600 — frequently asked
What is C92600 used for?
C92600 is typically used for valve bodies, pump housings and general castings. In short: free-machining tin bronze; good pressure-tightness; highest ductility of family.
What is the yield strength of C92600?
C92600 has a typical yield strength of 138 MPa (20 ksi) and a tensile strength of 303 MPa (43.9 ksi) — weaker than 76% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is C92600 easy to machine?
Yes — machinability is rated very good (70/100, better than 78% of copper alloy grades). Free machining for a tin bronze (≈70 % of C36000): use sharp positive-rake carbide or HSS, moderate speeds and soluble-oil coolant; chips break well thanks to the lead.
Can C92600 be welded?
Not readily — weldability is rated poor (30/100). Fusion welding is generally not recommended (lead causes hot cracking and porosity); repair by braze welding or silver brazing, soldering is excellent.
What surface finishes work on C92600?
Takes a good mechanical polish and buff; can be tin-, nickel- or chromium-plated after thorough degreasing; naturally develops a brown patina, no anodizing.
Can C92600 be formed, bent or molded?
A foundry alloy only — sand, permanent-mold, centrifugal, investment and continuous casting all work well; feed heavy sections to avoid tin inverse segregation and micro-shrinkage.
What is the maximum service temperature of C92600?
C92600 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 C92600-M01 and C92600-M07?
M01 is the default condition — standard ASTM B584 sand-cast condition for valve bodies, pump housings and general pressure castings. M07: best for machined bar/tube stock (bushings, wear rings) — dense, uniform, higher yield strength than sand cast (ASTM B505). Yield strength is 138 MPa in M01 versus 165 MPa in M07.
How much does C92600 cost?
C92600 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 Database — C92600 leaded tin bronze — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties of Copper and Copper Alloys — ASM International (1990)
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.