Copper Alloy CC333G-TA
Heat-treated state
EN CC333G
TA = temper annealed 675 °C / 2–6 h, air cooled
Mandatory for critical seawater parts: decomposes continuous κIII/β networks and suppresses selective de-aluminification.
Values for the TA condition
Other CC333G tempers and conditions
CC333G is listed in 5 conditions; see the grade overview at CC333G.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
TAThis page Temper annealed 675 °C / 2–6 h, air cooled | Mandatory for critical seawater parts: decomposes continuous κIII/β networks and suppresses selective de-aluminification. | 260 | 630 | 20 | 155 HB | 7.2 % IACS |
GSDefault Sand cast | Standard route for large propellers, pump casings and one-off heavy sections. | 270 | 650 | 18 | 160 HB | 7 % IACS |
Chill (permanent mould) cast | Faster cooling gives finer structure and higher strength for medium-size repeat parts. | 300 | 700 | 16 | 170 HB | 7 % IACS |
Centrifugally cast | Choose for dense, porosity-free bushings, wear rings and large-diameter sleeves. | 300 | 700 | 16 | 170 HB | 7 % IACS |
Continuously cast bar/tube | Stock bar and tube for machined shafts, nuts and bushings; very uniform structure. | 300 | 690 | 15 | 170 HB | 7 % IACS |
What is CC333G-TA?
CC333G-TA is CC333G heat treated to TA — mandatory for critical seawater parts: decomposes continuous κIII/β networks and suppresses selective de-aluminification. CC333G-TA has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 630 MPa (91.4 ksi) — stronger than 55% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 117 GPa (17 Msi). CC333G-TA has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 93% of copper alloy grades. It melts at 1,043°C (1,909 °F). GS is the default condition FabDigit quotes; TA is available on request or by drawing note.
Advantages
- Good corrosion resistance — 88/100, better than 100% of copper alloy grades
- Lightweight — 7.6 g/cm³ (0.275 lb/in³), better than 93% of copper alloy grades
- Readily welded — 78/100, better than 91% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
Limitations
- Low electrical conductivity — 7.2 % IACS, worse than 84% of copper alloy grades
- Poor heat conductor — 43 W/m·K (24.8 BTU/hr·ft·°F), worse than 78% of copper alloy grades
- Limited formability — 18/100, worse than 75% of copper alloy grades
CC333G-TA properties
Typical room-temperature values for CC333G-TA; 22 are specific to this condition. Other listed values are CC333G reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
CC333G-TA has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 93% of copper alloy grades. It melts at 1,043°C (1,909 °F).
Mechanical16
CC333G-TA has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 630 MPa (91.4 ksi) — stronger than 55% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
CC333G-TA is rated for continuous service to 300°C (572 °F). It conducts heat at 43 W/m·K (24.8 BTU/hr·ft·°F), worse than 78% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
CC333G-TA conducts electricity at 7.2 % IACS, worse than 84% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (88/100), better than 100% of copper alloy grades.
Sustainability4
Producing a kilogram of CC333G-TA takes about 60 MJ of energy and emits 4.2 kg of CO₂ — more than 69% of copper alloy grades. Typical recycled content is 40%.
Manufacturability8
CC333G-TA's machinability is fair (38/100, better than 55% of copper alloy grades); weldability very good (78/100); formability poor (18/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with CC333G-TA
Is CC333G easy to machine?
Tough, gummy chips — use sharp positive-rake carbide, rigid setups, moderate speed (60–120 m/min) with generous coolant; rating ≈30 % of AISI 1212.
Can CC333G be welded?
GTAW/GMAW with matching CuAl10Fe5Ni5 filler, 150–250 °C preheat and interpass ≤300 °C; remove oxide film, post-weld 675 °C temper anneal for seawater duty.
Can CC333G be formed, bent or molded?
Casting alloy only — control gating/feeding to avoid oxide films and shrinkage; not cold formable, but hot working at 850–950 °C is possible for wrought equivalents.
What surface finishes work on CC333G?
Not anodizable; parts are shot-blasted and machined, then protected by the natural passive film, epoxy/antifouling coatings or cathodic protection; polishes to a bright bronze lustre.
CC333G 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 |
|---|---|---|
| Al | 8.5 – 10.5 | 9.5 |
| Fe | 4 – 5.5 | 4.8 |
| NiNi ≥ Fe preferred for corrosion resistance | 4 – 5.5 | 4.8 |
| Mn | 0 – 3 | 1.2 |
| Siimpurity | ≤ 0.1 | — |
| Snimpurity | ≤ 0.1 | — |
| Znimpurity | ≤ 0.5 | — |
| Pbimpurity | ≤ 0.03 | — |
| Mgimpurity | ≤ 0.05 | — |
| Cu | ≥ 76 (balance) | — |
CC333G-TA — frequently asked
What is CC333G-TA used for?
CC333G-TA is typically used for ship propellers, seawater pump impellers, offshore valve bodies and cavitation-resistant components. In short: standard marine propeller bronze; best seawater cavitation resistance; weldable and repairable castings.
What is the yield strength of CC333G-TA?
CC333G-TA has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 630 MPa (91.4 ksi) — stronger than 55% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC333G-TA easy to machine?
Not especially — machinability is rated fair (38/100, better than 55% of copper alloy grades). Tough, gummy chips — use sharp positive-rake carbide, rigid setups, moderate speed (60–120 m/min) with generous coolant; rating ≈30 % of AISI 1212.
Can CC333G-TA be welded?
Yes — weldability is rated very good (78/100). GTAW/GMAW with matching CuAl10Fe5Ni5 filler, 150–250 °C preheat and interpass ≤300 °C; remove oxide film, post-weld 675 °C temper anneal for seawater duty.
What surface finishes work on CC333G-TA?
Not anodizable; parts are shot-blasted and machined, then protected by the natural passive film, epoxy/antifouling coatings or cathodic protection; polishes to a bright bronze lustre.
Can CC333G-TA be formed, bent or molded?
Casting alloy only — control gating/feeding to avoid oxide films and shrinkage; not cold formable, but hot working at 850–950 °C is possible for wrought equivalents.
What is the maximum service temperature of CC333G-TA?
CC333G-TA is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CC333G-GS and CC333G-GM?
GS is the default condition — standard route for large propellers, pump casings and one-off heavy sections. GM: faster cooling gives finer structure and higher strength for medium-size repeat parts. Yield strength is 270 MPa in GS versus 300 MPa in GM.
Sources
- EN 1982 — Copper and copper alloys: ingots and castings (CC333G, CuAl10Fe5Ni5-C) — CEN (2017)
- ASTM B148 — Aluminum-Bronze Sand Castings (C95800) — ASTM (2018)
- GB/T 1176 — (ZCuAl10Fe5Ni5) — SAC (2013)
- CDA alloy datasheet C95800 — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (copper alloys in seawater) — 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.