Copper Alloy CC496K
EN CC496K
CC496K (CuSn7Pb15-C, 2.1098, ZCuPb15Sn8) is a sand and permanent-mould cast high-leaded tin bronze that pairs 7 % tin for matrix strength with a large free lead phase for self-lubrication and embeddability of debris under boundary lubrication.
Reference datasheet — CC496K 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 GC condition
CC496K tempers and conditions
CC496K is supplied in 4 conditions, soft to hard. GC 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 |
|---|---|---|---|---|---|---|
Sand cast | Pick for large, complex or one-off bearing housings and bushes where section thickness varies. | 90 | 190 | 10 | 60 HB | 11 % IACS |
Permanent (chill) mould cast | Pick for medium-volume bushes needing finer grain, tighter dimensions and slightly higher strength than sand casting. | 100 | 210 | 8 | 65 HB | 11 % IACS |
GCDefault Continuously cast bar / tube | Default stock form: continuous-cast solid bar and hollow bar for machined bushings, thrust washers and wear strips. | 110 | 220 | 9 | 68 HB | 11 % IACS |
Centrifugally cast | Pick for large-diameter sleeves and rings needing dense, dross-free walls. | 110 | 220 | 8 | 65 HB | 11 % IACS |
What is CC496K?
CC496K (CuSn7Pb15-C, 2.1098, ZCuPb15Sn8) is a sand and permanent-mould cast high-leaded tin bronze that pairs 7 % tin for matrix strength with a large free lead phase for self-lubrication and embeddability of debris under boundary lubrication. Typical values are 110 MPa yield, 220 MPa tensile, 9 % elongation, 68 HB, machinability 90 and service to 200 °C, which suits bushings and thrust washers under moderate load. The high lead fraction rules out fusion welding, caps strength and can segregate in heavy sections; CC495K (C93700) is the nearest alternative when more load capacity is required. CC496K has a density of 9.25 g/cm³ (0.334 lb/in³), heavier than 99% of copper alloy grades. It melts at 762°C (1,404 °F). CC496K has a yield strength of 110 MPa (16 ksi) and a tensile strength of 220 MPa (31.9 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 9% and the elastic modulus is 78 GPa (11.3 Msi).
What is CC496K used for?
- Sliding bearings
- Bushings under moderate load
- Thrust washers
- Marine fittings with plain bearings
- Pump bushings
Advantages
- Easy to machine — 90/100, better than 98% of copper alloy grades
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of copper alloy grades
Limitations
- Limited formability — 5/100, worse than 98% of copper alloy grades
- Low stiffness — 78 GPa (11.3 Msi), worse than 97% of copper alloy grades
- Hard to polish — 55/100, worse than 97% of copper alloy grades
- Difficult to weld — 12/100, worse than 96% of copper alloy grades
- Low strength — 110 MPa (16 ksi), worse than 82% of copper alloy grades
CC496K properties
Typical room-temperature values for CC496K-GC; bars are the position among copper alloy grades.
Physical3
CC496K has a density of 9.25 g/cm³ (0.334 lb/in³), heavier than 99% of copper alloy grades. It melts at 762°C (1,404 °F).
Mechanical15
CC496K has a yield strength of 110 MPa (16 ksi) and a tensile strength of 220 MPa (31.9 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 9% and the elastic modulus is 78 GPa (11.3 Msi).
Thermal6
CC496K is rated for continuous service to 200°C (392 °F). It conducts heat at 52 W/m·K (30 BTU/hr·ft·°F), worse than 65% of copper alloy grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
CC496K conducts electricity at 11 % IACS, worse than 68% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of CC496K takes about 45 MJ of energy and emits 3 kg of CO₂ — less than 97% of copper alloy grades. Typical recycled content is 70%.
Manufacturability8
CC496K's machinability is excellent (90/100, better than 98% of copper alloy grades); weldability not recommended (12/100); 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. CC496K is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC496K
Is CC496K easy to machine?
Excellent free-machining behaviour — sharp positive-rake tools, high speed, light feed; lead gives short chips and low cutting force, but avoid smearing during finish boring.
Can CC496K be welded?
Essentially unweldable by fusion (lead causes hot cracking and porosity); repair by soft soldering or mechanical replacement rather than TIG/MIG.
Can CC496K be formed, bent or molded?
Cast only — wide freezing range needs directional solidification, adequate risering and controlled pouring (~1100–1180 °C) to avoid lead segregation and interdendritic shrinkage.
CC496K 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 |
|---|---|---|
| Curemainder after Sn/Pb per EN 1982 | 74 – 80 | 77.5 |
| Sn | 6 – 8 | 7 |
| Pbfree lead phase, self-lubricating | 13 – 17 | 15 |
| Zn | ≤ 2 | 0.5 |
| Ni | ≤ 2 | 0.3 |
| Fe | ≤ 0.25 | 0.1 |
| Sb | ≤ 0.5 | 0.2 |
| P | ≤ 0.1 | 0.03 |
| S | ≤ 0.1 | 0.03 |
| Mn | ≤ 0.2 | |
| Al | ≤ 0.01 | |
| Si | ≤ 0.01 |
What surface finishes work on CC496K?
Machine-finish or hone bores to 0.4–0.8 µm Ra; tin or electroless-nickel plating possible, no anodizing; degrease well before any bonding or plating.
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).
Equivalent designations
Standards and trade names that resolve to Copper Alloy CC496K in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuSn7Pb15-C2.1098
- Similar grades
- ZCuPb15Sn8
How much does CC496K cost?
CC496K 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.
CC496K — frequently asked
What is CC496K used for?
CC496K is typically used for sliding bearings, bushings under moderate load, thrust washers, marine fittings with plain bearings and pump bushings. In short: highest lead bearing bronze; excellent debris embeddability; service to 200 °C.
What is the yield strength of CC496K?
CC496K has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 220 MPa (31.9 ksi) — weaker than 82% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is CC496K easy to machine?
Yes — machinability is rated excellent (90/100, better than 98% of copper alloy grades). Excellent free-machining behaviour — sharp positive-rake tools, high speed, light feed; lead gives short chips and low cutting force, but avoid smearing during finish boring.
Can CC496K be welded?
Not readily — weldability is rated not recommended (12/100). Essentially unweldable by fusion (lead causes hot cracking and porosity); repair by soft soldering or mechanical replacement rather than TIG/MIG.
What surface finishes work on CC496K?
Machine-finish or hone bores to 0.4–0.8 µm Ra; tin or electroless-nickel plating possible, no anodizing; degrease well before any bonding or plating.
Can CC496K be formed, bent or molded?
Cast only — wide freezing range needs directional solidification, adequate risering and controlled pouring (~1100–1180 °C) to avoid lead segregation and interdendritic shrinkage.
What is the maximum service temperature of CC496K?
CC496K is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CC496K-GC and CC496K-GS?
GC is the default condition — default stock form: continuous-cast solid bar and hollow bar for machined bushings, thrust washers and wear strips. GS: pick for large, complex or one-off bearing housings and bushes where section thickness varies. Yield strength is 110 MPa in GC versus 90 MPa in GS.
How much does CC496K cost?
CC496K 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
- EN 1982 — Copper and copper alloys: Ingots and castings (CuSn7Pb15-C, CC496K) — CEN (2017)
- GB/T 1176 — (ZCuPb15Sn8) — SAC (2013)
- CDA alloy datasheet C93800 (high-leaded tin bronze) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous 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.