Copper Alloy CC752S
EN CC752S
CC752S (CuZn35Pb2Al-C) is an aluminium-modified leaded yellow brass casting alloy, where the aluminium addition raises strength and corrosion resistance over plain leaded brass while 2 % lead keeps machining free-cutting.
Reference datasheet — CC752S 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
CC752S tempers and conditions
CC752S is supplied in 5 conditions, soft to hard. GS 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 |
|---|---|---|---|---|---|---|
GSDefault Sand cast | Default for valve bodies, pump housings and one-off/low-volume pressure fittings with moderate strength needs. | 110 | 280 | 15 | 75 HB | 24 % IACS |
Gravity die (permanent mould) cast | Series production of fittings needing tighter tolerances, finer grain and ~10 % higher strength than sand cast. | 130 | 300 | 12 | 85 HB | 24 % IACS |
Centrifugally cast | Choose for hollow cylindrical parts (bushings, sleeves, flange rings) needing dense, porosity-free walls. | 130 | 300 | 15 | 85 HB | 24 % IACS |
Continuously cast | Best for machined-from-stock fittings and bushings: highest as-cast strength, uniform fine structure, pressure-tight. | 150 | 320 | 12 | 90 HB | 24 % IACS |
Pressure die cast | High-volume thin-wall fittings and hardware; highest strength/hardness but lowest ductility and possible sub-surface porosity. | 170 | 320 | 8 | 95 HB | 24 % IACS |
What is CC752S?
CC752S (CuZn35Pb2Al-C) is an aluminium-modified leaded yellow brass casting alloy, where the aluminium addition raises strength and corrosion resistance over plain leaded brass while 2 % lead keeps machining free-cutting. As-cast properties are about 110 MPa yield, 280 MPa tensile, 15 % elongation and 75 HB, with 24 % IACS conductivity, a 200 °C maximum service temperature and a machinability rating of 80, in sand, gravity die, centrifugal, continuous and pressure die cast forms. The aluminium oxide film complicates melt handling, plating pre-clean and any repair welding, and lead-restricted potable-water rules may exclude it. CC750S is the lower-strength alternative. CC752S has a density of 8.45 g/cm³ (0.305 lb/in³), lighter than 70% of copper alloy grades. It melts at 880°C (1,616 °F). CC752S has a yield strength of 110 MPa (16 ksi) and a tensile strength of 280 MPa (40.6 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 95 GPa (13.8 Msi).
What is CC752S used for?
- water fittings
- valve components
- hardware castings
Advantages
- Easy to machine — 80/100, better than 86% of copper alloy grades
Limitations
- Low stiffness — 95 GPa (13.8 Msi), worse than 93% of copper alloy grades
- Low strength — 110 MPa (16 ksi), worse than 82% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
CC752S properties
Typical room-temperature values for CC752S-GS; bars are the position among copper alloy grades.
Physical3
CC752S has a density of 8.45 g/cm³ (0.305 lb/in³), lighter than 70% of copper alloy grades. It melts at 880°C (1,616 °F).
Mechanical11
CC752S has a yield strength of 110 MPa (16 ksi) and a tensile strength of 280 MPa (40.6 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 95 GPa (13.8 Msi).
Thermal6
CC752S is rated for continuous service to 200°C (392 °F). It conducts heat at 115 W/m·K (66.4 BTU/hr·ft·°F), better than 61% of copper alloy grades. Thermal expansion is 20.5 µm/m·K (11.4 µin/in·°F).
Electrical3
CC752S conducts electricity at 24 % IACS, better than 57% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (57/100), worse than 80% of copper alloy grades.
Sustainability4
Producing a kilogram of CC752S takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 80%.
Manufacturability7
CC752S's machinability is very good (80/100, better than 86% of copper alloy grades); weldability poor (25/100); formability poor (20/100).
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. CC752S is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC752S
Is CC752S easy to machine?
Excellent free-cutting behaviour with the 2 % Pb — use zero/negative rake brass geometry, high speeds, no cutting oil needed; Al film gives slightly more tool rub than plain leaded brass.
Can CC752S be welded?
Poor fusion weldability (Pb hot-cracks, Zn fumes and Al oxide film); join by brazing/soldering or mechanical means, and use inert-gas shielding plus fume extraction if repair-welding.
Can CC752S be formed, bent or molded?
Casting alloy — good fluidity and pressure-tightness in sand, gravity die, centrifugal, continuous and pressure die casting; keep bottom-filling and low turbulence to avoid Al-oxide inclusions, and design generous fillets since cold forming is limited.
CC752S 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 |
|---|---|---|
| Cu | 60 – 63 | 61.5 |
| Pbfree-machining / pressure-tightness addition | 1 – 2.5 | 2 |
| Alstrength, fluidity and oxide-skin former | 0.2 – 0.8 | 0.5 |
| Fe | ≤ 0.8 | 0.3 |
| Sn | ≤ 0.5 | 0.2 |
| Ni | ≤ 1 | 0.2 |
| Mn | ≤ 0.5 | 0.1 |
| Si | ≤ 0.05 | |
| Sb | ≤ 0.1 | |
| Znremainder, nominally ~35 % | balance |
What surface finishes work on CC752S?
Polishes and buffs well to a bright yellow finish; readily Ni/Cr plated or chemically patinated (needs careful cyanide-free pre-clean because of the Al oxide), and best lacquered for outdoor use — not anodizable.
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 CC752S in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuZn35Pb2AI-C
How much does CC752S cost?
CC752S 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.
CC752S — frequently asked
What is CC752S used for?
CC752S is typically used for water fittings, valve components and hardware castings. In short: strongest leaded cast brass here; 80 machinability rating; better corrosion resistance than CC750S.
What is the yield strength of CC752S?
CC752S has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 280 MPa (40.6 ksi) — weaker than 82% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC752S easy to machine?
Yes — machinability is rated very good (80/100, better than 86% of copper alloy grades). Excellent free-cutting behaviour with the 2 % Pb — use zero/negative rake brass geometry, high speeds, no cutting oil needed; Al film gives slightly more tool rub than plain leaded brass.
Can CC752S be welded?
Not readily — weldability is rated poor (25/100). Poor fusion weldability (Pb hot-cracks, Zn fumes and Al oxide film); join by brazing/soldering or mechanical means, and use inert-gas shielding plus fume extraction if repair-welding.
What surface finishes work on CC752S?
Polishes and buffs well to a bright yellow finish; readily Ni/Cr plated or chemically patinated (needs careful cyanide-free pre-clean because of the Al oxide), and best lacquered for outdoor use — not anodizable.
Can CC752S be formed, bent or molded?
Casting alloy — good fluidity and pressure-tightness in sand, gravity die, centrifugal, continuous and pressure die casting; keep bottom-filling and low turbulence to avoid Al-oxide inclusions, and design generous fillets since cold forming is limited.
What is the maximum service temperature of CC752S?
CC752S 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 CC752S-GS and CC752S-GP?
GS is the default condition — default for valve bodies, pump housings and one-off/low-volume pressure fittings with moderate strength needs. GP: high-volume thin-wall fittings and hardware; highest strength/hardness but lowest ductility and possible sub-surface porosity. Yield strength is 110 MPa in GS versus 170 MPa in GP.
How much does CC752S cost?
CC752S 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 alloy datasheets (cast brasses, C854xx/C857xx analogues) — Copper Development Association (2023)
- Cast and continuous-cast brass alloy datasheets (CuZn35Pb2Al-C) — European brass foundries / continuous-casting producers (2022)
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.