Copper Alloy CC480K-GZ (Centrifugal cast)
Finish state
EN CC480K
Choose for large-diameter bushings, sleeves and worm-wheel rims needing dense, inclusion-free wall sections.
Values for the GZ condition
Other CC480K tempers and conditions
CC480K is listed in 5 conditions; see the grade overview at CC480K.
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 complex housings, valve bodies and worm wheels where section thickness varies. | 150 | 290 | 10 | 85 HB | 11.5 % IACS |
Investment / precision cast | Choose for small, thin-walled or intricate near-net-shape parts where machining allowance must be minimal. | 160 | 295 | 8 | 88 HB | 12 % IACS |
Permanent (chill/gravity die) cast | Choose for medium-volume small parts where a finer, denser chill structure and closer dimensions are wanted. | 165 | 300 | 7 | 90 HB | 12 % IACS |
GZThis page Centrifugal cast | Choose for large-diameter bushings, sleeves and worm-wheel rims needing dense, inclusion-free wall sections. | 170 | 310 | 10 | 90 HB | 12 % IACS |
GCDefault Continuous cast bar / tube | Default stock form: continuous-cast rounds, hollows and tubes for machined bearings, bushings and gear blanks — highest strength and best soundness. | 190 | 330 | 8 | 95 HB | — |
What is CC480K-GZ?
CC480K-GZ is CC480K supplied in the GZ condition — choose for large-diameter bushings, sleeves and worm-wheel rims needing dense, inclusion-free wall sections. CC480K-GZ has a yield strength of 170 MPa (24.7 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 62% of copper alloy grades. Elongation at break is 10% and the elastic modulus is 105 GPa (15.2 Msi). CC480K-GZ has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 830°C (1,526 °F). GC is the default condition FabDigit quotes; GZ is available on request or by drawing note.
Advantages
- Good corrosion resistance — 72/100, better than 84% of copper alloy grades
Limitations
- Limited formability — 5/100, worse than 98% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
- Limited ductility — 10%, worse than 76% of copper alloy grades
CC480K-GZ properties
Typical room-temperature values for CC480K-GZ; 21 are specific to this condition. Other listed values are CC480K reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
CC480K-GZ has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 830°C (1,526 °F).
Mechanical13
CC480K-GZ has a yield strength of 170 MPa (24.7 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 62% of copper alloy grades. Elongation at break is 10% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
CC480K-GZ is rated for continuous service to 250°C (482 °F). It conducts heat at 60 W/m·K (34.7 BTU/hr·ft·°F), worse than 59% of copper alloy grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
CC480K-GZ conducts electricity at 12 % IACS, worse than 62% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 84% of copper alloy grades.
Sustainability4
Producing a kilogram of CC480K-GZ takes about 60 MJ of energy and emits 4.2 kg of CO₂ — more than 69% of copper alloy grades. Typical recycled content is 60%.
Manufacturability8
CC480K-GZ's machinability is fair (42/100, better than 59% of copper alloy grades); weldability poor (25/100); formability not recommended (5/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CC480K-GZ
Is CC480K easy to machine?
Machines cleanly but with tough, stringy chips (≈20–30 % of AISI 1212); use sharp positive-rake carbide, moderate speed, generous feed and light coolant to avoid smearing the soft matrix.
Can CC480K be welded?
Poor fusion weldability — hot-short and tin-oxide prone; repair by braze welding or TIG with matching Cu-Sn/phosphor-bronze filler and 150–250 °C preheat, then stress relieve.
Can CC480K be formed, bent or molded?
Cast-only alloy: wide freezing range needs chills, generous risers and directional solidification to avoid interdendritic shrink; no cold forming, hot working not practiced.
What surface finishes work on CC480K?
Not anodizable; take a good mechanical polish, accepts tin, nickel or chrome plating, and can be chemically patinated or lacquered for architectural work.
CC480K 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 |
|---|---|---|
| Snprincipal solid-solution/δ-phase former | 9 – 11 | 10 |
| Pdeoxidiser residual; higher P grades are CuSn11P-C | ≤ 0.05 | 0.03 |
| Pb | ≤ 0.25 | 0.1 |
| Zn | ≤ 0.5 | 0.2 |
| Ni | ≤ 2 | 0.3 |
| Fe | ≤ 0.2 | 0.1 |
| Sb | ≤ 0.3 | 0.1 |
| Mn | ≤ 0.2 | 0.05 |
| S | ≤ 0.05 | 0.02 |
| Alkept very low to avoid dross/oxide films | ≤ 0.01 | 0.01 |
| Si | ≤ 0.01 | 0.01 |
| Curemainder, nominally 88–90 % | balance | — |
CC480K-GZ — frequently asked
What is CC480K-GZ used for?
CC480K-GZ is typically used for worm gears, heavy-duty bushings, bearings and pressure-tight valve bodies. In short: classic high-tin bearing bronze; good pressure tightness; poor fusion weldability.
What is the yield strength of CC480K-GZ?
CC480K-GZ has a typical yield strength of 170 MPa (24.7 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 62% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC480K-GZ easy to machine?
Not especially — machinability is rated fair (42/100, better than 59% of copper alloy grades). Machines cleanly but with tough, stringy chips (≈20–30 % of AISI 1212); use sharp positive-rake carbide, moderate speed, generous feed and light coolant to avoid smearing the soft matrix.
Can CC480K-GZ be welded?
Not readily — weldability is rated poor (25/100). Poor fusion weldability — hot-short and tin-oxide prone; repair by braze welding or TIG with matching Cu-Sn/phosphor-bronze filler and 150–250 °C preheat, then stress relieve.
What surface finishes work on CC480K-GZ?
Not anodizable; take a good mechanical polish, accepts tin, nickel or chrome plating, and can be chemically patinated or lacquered for architectural work.
Can CC480K-GZ be formed, bent or molded?
Cast-only alloy: wide freezing range needs chills, generous risers and directional solidification to avoid interdendritic shrink; no cold forming, hot working not practiced.
What is the maximum service temperature of CC480K-GZ?
CC480K-GZ is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CC480K-GC and CC480K-GS?
GC is the default condition — default stock form: continuous-cast rounds, hollows and tubes for machined bearings, bushings and gear blanks — highest strength and best soundness. GS: choose for one-off or large complex housings, valve bodies and worm wheels where section thickness varies. Yield strength is 190 MPa in GC versus 150 MPa in GS.
Sources
- EN 1982 — Copper and copper alloys: ingots and castings (CuSn10-C / CC480K) — CEN (2017)
- ASTM B505/B505M — Copper alloy continuous castings (C90700) — ASTM (2018)
- CDA alloy datasheet C90700 — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (copper alloys) — ASM International (2005)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.