Copper Alloy CC760S
EN CC760S
CC760S (CuZn15As-C) is a low-zinc alpha brass casting alloy with an arsenic addition that suppresses dezincification in water and marine service.
Reference datasheet — CC760S 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 GS condition
CC760S tempers and conditions
CC760S is supplied in 4 conditions, soft to hard. GS 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 |
|---|---|---|---|---|---|---|
GSDefault Sand cast | Standard route for valve bodies, fittings and one-off/low-volume water-contact castings. | 90 | 220 | 30 | 55 HB | 32 % IACS |
Gravity die (permanent mould) cast | Pick for medium/high volume fittings needing finer grain, tighter tolerance and ~15 % higher strength than sand cast. | 100 | 250 | 35 | 60 HB | 33 % IACS |
Centrifugally cast | For dense, porosity-free bushings, sleeves and ring/tubular water-contact parts. | 100 | 260 | 35 | 62 HB | 33 % IACS |
Continuously cast bar/tube | Choose for machined-from-bar fittings and stock shapes; highest and most uniform as-cast properties. | 110 | 270 | 30 | 65 HB | 33 % IACS |
What is CC760S?
CC760S (CuZn15As-C) is a low-zinc alpha brass casting alloy with an arsenic addition that suppresses dezincification in water and marine service. Default-condition properties are 90 MPa yield, 220 MPa tensile, 30 % elongation and 55 HB, with 32 % IACS electrical conductivity and service to 200 °C; it is cast by sand (GS), permanent-mould (GM), centrifugal (GZ) and continuous (GC) routes. Strength is low compared with the leaded and silicon brasses, and the unleaded alpha structure machines gummily at roughly 30 % of free-cutting brass throughput. Where higher strength with lead-free water contact is needed, CC761S is the nearer choice. CC760S has a density of 8.75 g/cm³ (0.316 lb/in³), lighter than 51% of copper alloy grades. It melts at 1,000°C (1,832 °F). CC760S has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 220 MPa (31.9 ksi) — weaker than 88% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 100 GPa (14.5 Msi).
What is CC760S used for?
- marine fittings
- water valves
- dezincification-resistant parts
Advantages
- Ductile — tolerates forming and impact — 30%, better than 75% of copper alloy grades
Limitations
- Low strength — 90 MPa (13.1 ksi), worse than 88% of copper alloy grades
- Low stiffness — 100 GPa (14.5 Msi), worse than 82% of copper alloy grades
CC760S properties
Typical room-temperature values for CC760S-GS; bars are the position among copper alloy grades.
Physical3
CC760S has a density of 8.75 g/cm³ (0.316 lb/in³), lighter than 51% of copper alloy grades. It melts at 1,000°C (1,832 °F).
Mechanical14
CC760S has a yield strength of 90 MPa (13.1 ksi) and a tensile strength of 220 MPa (31.9 ksi) — weaker than 88% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 100 GPa (14.5 Msi).
Thermal6
CC760S is rated for continuous service to 200°C (392 °F). It conducts heat at 150 W/m·K (86.7 BTU/hr·ft·°F), better than 72% of copper alloy grades. Thermal expansion is 18.7 µm/m·K (10.4 µin/in·°F).
Electrical3
CC760S conducts electricity at 32 % IACS, better than 72% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), better than 69% of copper alloy grades.
Sustainability4
Producing a kilogram of CC760S takes about 58 MJ of energy and emits 4 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 50%.
Manufacturability8
CC760S's machinability is fair (35/100, better than 51% of copper alloy grades); weldability fair (45/100); formability fair (50/100).
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. CC760S is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC760S
Is CC760S easy to machine?
Unleaded alpha brass machines gummy with long stringy chips — use sharp positive-rake carbide, high speed, ample coolant; expect ~30 % of free-cutting brass throughput.
Can CC760S be welded?
Best joined by brazing or silver soldering; TIG/oxy-fuel welding possible with silicon-bronze or CuZn filler but zinc fuming, porosity and colour mismatch require good ventilation and preheat control.
Can CC760S be formed, bent or molded?
Excellent casting fluidity in sand, permanent mould, centrifugal and continuous casting; degas and skim to control zinc loss and dross, feed generously and avoid aluminium contamination.
CC760S 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 |
|---|---|---|
| Cualpha single-phase composition | 84 – 86 | 85 |
| Asdezincification inhibitor | 0.02 – 0.15 | 0.06 |
| Pbkept low for drinking-water compliance | ≤ 0.05 | |
| Sn | ≤ 0.1 | |
| Fe | ≤ 0.1 | |
| Ni | ≤ 0.2 | |
| Alrestricted — impairs As inhibition and causes dross | ≤ 0.01 | |
| Si | ≤ 0.02 | |
| Mn | ≤ 0.05 | |
| Sb | ≤ 0.02 | |
| P | ≤ 0.02 | |
| Total others | ≤ 0.3 | |
| Zn≈15 % nominal | balance |
What surface finishes work on CC760S?
Polishes to a bright golden lustre; readily tin, nickel or chrome plated for potable-water and decorative service; passivate/lacquer to limit tarnish — anodizing does not apply.
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 CC760S in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuZn15As-C
How much does CC760S cost?
CC760S 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.
CC760S — frequently asked
What is CC760S used for?
CC760S is typically used for marine fittings, water valves and dezincification-resistant parts. In short: dezincification-resistant cast brass; ductile at 30 % elongation; gummy, slow to machine.
What is the yield strength of CC760S?
CC760S has a typical yield strength of 90 MPa (13.1 ksi) and a tensile strength of 220 MPa (31.9 ksi) — weaker than 88% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is CC760S easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of copper alloy grades). Unleaded alpha brass machines gummy with long stringy chips — use sharp positive-rake carbide, high speed, ample coolant; expect ~30 % of free-cutting brass throughput.
Can CC760S be welded?
With care — weldability is rated fair (45/100). Best joined by brazing or silver soldering; TIG/oxy-fuel welding possible with silicon-bronze or CuZn filler but zinc fuming, porosity and colour mismatch require good ventilation and preheat control.
What surface finishes work on CC760S?
Polishes to a bright golden lustre; readily tin, nickel or chrome plated for potable-water and decorative service; passivate/lacquer to limit tarnish — anodizing does not apply.
Can CC760S be formed, bent or molded?
Excellent casting fluidity in sand, permanent mould, centrifugal and continuous casting; degas and skim to control zinc loss and dross, feed generously and avoid aluminium contamination.
What is the maximum service temperature of CC760S?
CC760S 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 CC760S-GS and CC760S-GC?
GS is the default condition — standard route for valve bodies, fittings and one-off/low-volume water-contact castings. GC: choose for machined-from-bar fittings and stock shapes; highest and most uniform as-cast properties. Yield strength is 90 MPa in GS versus 110 MPa in GC.
How much does CC760S cost?
CC760S 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 — CEN (2017)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Copper Development Association alloy datasheets (Cu-Zn low-zinc brasses) — CDA / copper.org (2023)
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.