Copper Alloy CC754S
EN CC754S
CC754S (CuZn39Pb1Al-C) is a high-zinc leaded cast brass with an aluminium addition that improves melt behaviour and castability for general engineering castings.
Reference datasheet — CC754S 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 GM condition
CC754S tempers and conditions
CC754S is supplied in 5 conditions, soft to hard. GM 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 |
|---|---|---|---|---|---|---|
Sand cast | Choose for one-off or large, thick-walled castings where dimensional tolerance is loose and strength demand is modest. | 120 | 300 | 22 | 80 HB | 24 % IACS |
GMDefault Gravity (permanent mould) die cast | Default commercial condition: finer grain and higher strength than sand casting, good for valve bodies and fittings in medium-to-high volume. | 150 | 380 | 20 | 95 HB | 25 % IACS |
Centrifugal cast | Choose for rings, bushes, sleeves and hollow rotational parts needing dense, porosity-free walls. | 160 | 380 | 18 | 95 HB | 25 % IACS |
Continuous cast | Choose for semi-finished bar, tube and hollow stock to be machined into fittings and bushings. | 160 | 380 | 18 | 95 HB | 25 % IACS |
Pressure die cast | Choose for high-volume thin-wall fittings and sanitary hardware needing near-net shape and best surface; ductility is the lowest of the forms. | 180 | 400 | 10 | 105 HB | 24 % IACS |
What is CC754S?
CC754S (CuZn39Pb1Al-C) is a high-zinc leaded cast brass with an aluminium addition that improves melt behaviour and castability for general engineering castings. Default-condition properties are 150 MPa yield, 380 MPa tensile, 20 % elongation and 95 HB, with a machinability score of 80; it is cast by sand (GS), permanent-mould (GM), centrifugal (GZ), continuous (GC) and pressure die (GP) routes. Fusion weldability is poor because zinc and lead volatilise, and the lead content restricts drinking-water applications. For higher wear resistance choose CC753S; for lead-free plumbing duty use CC761S. CC754S has a density of 8.4 g/cm³ (0.303 lb/in³), lighter than 75% of copper alloy grades. It melts at 885°C (1,625 °F). CC754S has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 380 MPa (55.1 ksi) — weaker than 69% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 95 GPa (13.8 Msi).
What is CC754S used for?
- fittings
- electrical hardware
- general 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
- Needs corrosion protection — 52/100, worse than 93% of copper alloy grades
- Low fracture toughness — 33 MPa·√m (30 ksi·√in), worse than 85% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
CC754S properties
Typical room-temperature values for CC754S-GM; bars are the position among copper alloy grades.
Physical3
CC754S has a density of 8.4 g/cm³ (0.303 lb/in³), lighter than 75% of copper alloy grades. It melts at 885°C (1,625 °F).
Mechanical15
CC754S has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 380 MPa (55.1 ksi) — weaker than 69% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 95 GPa (13.8 Msi).
Thermal6
CC754S 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 20.8 µm/m·K (11.6 µin/in·°F).
Electrical3
CC754S conducts electricity at 25 % IACS, better than 59% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is fair (52/100), worse than 93% of copper alloy grades.
Sustainability4
Producing a kilogram of CC754S takes about 55 MJ of energy and emits 3.4 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 70%.
Manufacturability8
CC754S's machinability is very good (80/100, better than 86% of copper alloy grades); weldability poor (25/100); formability poor (22/100).
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. CC754S is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC754S
Is CC754S easy to machine?
Free-machining: use zero-to-slightly-negative rake carbide or HSS tools, high speed, light feed, minimal coolant; chips are short and break cleanly.
Can CC754S be welded?
Poor fusion weldability — zinc and lead volatilise causing porosity and hot cracking; join by brazing/soldering with flux and adequate fume extraction instead.
Can CC754S be formed, bent or molded?
Casting alloy with excellent fluidity in sand, permanent-mould, centrifugal, continuous and pressure die casting; keep pouring 1000–1050 °C, use degassing and generous risering, and avoid cold work on the α+β structure.
CC754S 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 | 57 – 59 | 58 |
| Pbmachinability | 0.5 – 1.5 | 1 |
| Alfluidity / oxidation control | 0.2 – 0.8 | 0.5 |
| Feimpurity limit | ≤ 0.8 | |
| Mnimpurity limit | ≤ 0.5 | |
| Niimpurity limit | ≤ 0.5 | |
| Snimpurity limit | ≤ 0.4 | |
| Siimpurity limit | ≤ 0.05 | |
| others totalsum of unlisted elements | ≤ 0.2 | |
| Zn | balance |
What surface finishes work on CC754S?
Takes bright polish, and nickel/chrome or lacquer finishes readily; not anodisable — pickle/passivate with benzotriazole inhibitor to prevent tarnish, and specify inhibited grades or dezincification-resistant alloys for potable water.
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 CC754S in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuZn39Pb1Al-C
How much does CC754S cost?
CC754S 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.
CC754S — frequently asked
What is CC754S used for?
CC754S is typically used for fittings, electrical hardware and general castings. In short: high-fluidity leaded cast brass; die-castable general-purpose grade; free-machining, poor weldability.
What is the yield strength of CC754S?
CC754S has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 380 MPa (55.1 ksi) — weaker than 69% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC754S easy to machine?
Yes — machinability is rated very good (80/100, better than 86% of copper alloy grades). Free-machining: use zero-to-slightly-negative rake carbide or HSS tools, high speed, light feed, minimal coolant; chips are short and break cleanly.
Can CC754S be welded?
Not readily — weldability is rated poor (25/100). Poor fusion weldability — zinc and lead volatilise causing porosity and hot cracking; join by brazing/soldering with flux and adequate fume extraction instead.
What surface finishes work on CC754S?
Takes bright polish, and nickel/chrome or lacquer finishes readily; not anodisable — pickle/passivate with benzotriazole inhibitor to prevent tarnish, and specify inhibited grades or dezincification-resistant alloys for potable water.
Can CC754S be formed, bent or molded?
Casting alloy with excellent fluidity in sand, permanent-mould, centrifugal, continuous and pressure die casting; keep pouring 1000–1050 °C, use degassing and generous risering, and avoid cold work on the α+β structure.
What is the maximum service temperature of CC754S?
CC754S 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 CC754S-GM and CC754S-GS?
GM is the default condition — default commercial condition: finer grain and higher strength than sand casting, good for valve bodies and fittings in medium-to-high volume. GS: choose for one-off or large, thick-walled castings where dimensional tolerance is loose and strength demand is modest. Yield strength is 150 MPa in GM versus 120 MPa in GS.
How much does CC754S cost?
CC754S 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) — Copper Development Association (2023)
- Cast leaded brass CuZn39Pb1Al-C foundry data — European brass foundries (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.