Copper Alloy CC334G
EN CC334G
CC334G (CuAl11Fe6Ni6-C, equivalent to C95900) is the highest-alloyed cast aluminum bronze in the EN series, with elevated Al, Fe and Ni raising strength and hardness well above standard nickel-aluminum bronze.
Reference datasheet — CC334G 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
CC334G tempers and conditions
CC334G 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 |
|---|---|---|---|---|---|---|
Temper annealed (≈675 °C, air cooled) after casting | Specify for long-term seawater service or welded castings — redistributes beta/kappa phases, relieves stress and improves dealuminification resistance at slightly lower hardness. | 430 | 700 | 8 | 22 HRC | 7.5 % IACS |
GSDefault Sand cast | Default route for one-off and thick-section castings such as wear plates, gibs and large bushes. | 450 | 710 | 6 | 24 HRC | 7 % IACS |
Continuously cast bar/tube | Stock bar and tube for machined bushes and slide components with uniform, low-porosity structure. | 470 | 740 | 5 | 25 HRC | 7 % IACS |
Centrifugally cast | Standard route for bushes, sleeves, wear rings and gear blanks — dense, porosity-free tubular sections. | 490 | 760 | 5 | 26 HRC | 7 % IACS |
Chill / permanent-mould cast | Pick for repeat small-to-medium parts where the faster chill gives a finer structure and the highest hardness. | 500 | 760 | 5 | 27 HRC | 7 % IACS |
What is CC334G?
CC334G (CuAl11Fe6Ni6-C, equivalent to C95900) is the highest-alloyed cast aluminum bronze in the EN series, with elevated Al, Fe and Ni raising strength and hardness well above standard nickel-aluminum bronze. Castings deliver 710 MPa tensile, 450 MPa yield, 250 HB and service to 300 °C, which suits heavily loaded gears, bushings and wear parts. The cost is ductility of only 6 % elongation, a machinability rating of 25 and crack sensitivity in heavy weldments. Where toughness, weldability or seawater service matter more than hardness, use CC333G instead. CC334G has a density of 7.45 g/cm³ (0.269 lb/in³), lighter than 99% of copper alloy grades. It melts at 1,030°C (1,886 °F). CC334G has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 710 MPa (103 ksi) — stronger than 86% of copper alloy grades. Elongation at break is 6% and the elastic modulus is 122 GPa (17.7 Msi).
What is CC334G used for?
- heavy-duty gears
- high-load bushings
- propeller bosses
- wear-resistant machine parts
Advantages
- Lightweight — 7.45 g/cm³ (0.269 lb/in³), better than 99% of copper alloy grades
- Good corrosion resistance — 78/100, better than 94% of copper alloy grades
- High strength — 450 MPa (65.3 ksi), better than 86% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
Limitations
- Limited formability — 5/100, worse than 98% of copper alloy grades
- Low fracture toughness — 26 MPa·√m (23.7 ksi·√in), worse than 94% of copper alloy grades
- Limited ductility — 6%, worse than 89% of copper alloy grades
- Low electrical conductivity — 7 % IACS, worse than 86% of copper alloy grades
- Difficult to machine — 25/100, worse than 86% of copper alloy grades
CC334G properties
Typical room-temperature values for CC334G-GS; bars are the position among copper alloy grades.
Physical3
CC334G has a density of 7.45 g/cm³ (0.269 lb/in³), lighter than 99% of copper alloy grades. It melts at 1,030°C (1,886 °F).
Mechanical17
CC334G has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 710 MPa (103 ksi) — stronger than 86% of copper alloy grades. Elongation at break is 6% and the elastic modulus is 122 GPa (17.7 Msi).
Thermal6
CC334G is rated for continuous service to 300°C (572 °F). It conducts heat at 38 W/m·K (22 BTU/hr·ft·°F), worse than 84% of copper alloy grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
CC334G conducts electricity at 7 % IACS, worse than 86% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of copper alloy grades.
Sustainability4
Producing a kilogram of CC334G takes about 55 MJ of energy and emits 3.8 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 45%.
Manufacturability8
CC334G's machinability is poor (25/100, worse than 86% of copper alloy grades); weldability fair (40/100); formability not recommended (5/100).
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. CC334G is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC334G
Is CC334G easy to machine?
Hard and gummy — use rigid setups, sharp carbide (or PCD for finishing), low-to-moderate speeds, heavy positive rake and generous coolant; expect roughly a quarter of free-cutting brass productivity.
Can CC334G be welded?
GTAW/GMAW with matching NAB filler (e.g. ECuAl-A2/AlBz-Ni) works but needs 150–250 °C preheat, clean oxide removal and preferably a 675 °C temper anneal afterwards; heavy sections are crack-sensitive.
Can CC334G be formed, bent or molded?
Casting alloy only — no cold forming; pour at about 1120–1180 °C with quiet, bottom-filled gating and generous feeders to avoid oxide films and shrinkage in heavy sections.
CC334G 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 |
|---|---|---|
| Alprimary strengthener; drives kappa/beta phase content | 10.5 – 12.5 | 11.5 |
| Fegrain refiner, forms hard kappa particles | 4 – 6.5 | 6 |
| Nistabilises structure, improves corrosion and hot strength | 4 – 6.5 | 6 |
| Mn | ≤ 2.5 | 1 |
| Si | ≤ 0.15 | |
| Zn | ≤ 0.5 | |
| Sn | ≤ 0.1 | |
| Pb | ≤ 0.05 | |
| Curemainder, approx. 74–79 % | balance |
What surface finishes work on CC334G?
Not anodisable; machine or grind to size, then leave bare (self-protecting oxide), passivate, or apply hard-chrome/PTFE-type coatings only where sliding contact demands it — polishes to a bright bronze finish.
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 CC334G in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuAl11Fe6Ni6-C
- Similar grades
- C95900
How much does CC334G cost?
CC334G 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.
CC334G — frequently asked
What is CC334G used for?
CC334G is typically used for heavy-duty gears, high-load bushings, propeller bosses and wear-resistant machine parts. In short: hardest cast aluminum bronze; 250 HB wear surface; low ductility, 6 % elongation.
What is the yield strength of CC334G?
CC334G has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 710 MPa (103 ksi) — stronger than 86% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC334G easy to machine?
Not especially — machinability is rated poor (25/100, worse than 86% of copper alloy grades). Hard and gummy — use rigid setups, sharp carbide (or PCD for finishing), low-to-moderate speeds, heavy positive rake and generous coolant; expect roughly a quarter of free-cutting brass productivity.
Can CC334G be welded?
With care — weldability is rated fair (40/100). GTAW/GMAW with matching NAB filler (e.g. ECuAl-A2/AlBz-Ni) works but needs 150–250 °C preheat, clean oxide removal and preferably a 675 °C temper anneal afterwards; heavy sections are crack-sensitive.
What surface finishes work on CC334G?
Not anodisable; machine or grind to size, then leave bare (self-protecting oxide), passivate, or apply hard-chrome/PTFE-type coatings only where sliding contact demands it — polishes to a bright bronze finish.
Can CC334G be formed, bent or molded?
Casting alloy only — no cold forming; pour at about 1120–1180 °C with quiet, bottom-filled gating and generous feeders to avoid oxide films and shrinkage in heavy sections.
What is the maximum service temperature of CC334G?
CC334G 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 CC334G-GS and CC334G-GM?
GS is the default condition — default route for one-off and thick-section castings such as wear plates, gibs and large bushes. GM: pick for repeat small-to-medium parts where the faster chill gives a finer structure and the highest hardness. Yield strength is 450 MPa in GS versus 500 MPa in GM.
How much does CC334G cost?
CC334G 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)
- ASTM B505/B505M — Continuous Cast Copper Alloys (C95900) — ASTM International (2018)
- 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)
- CDA alloy datasheet C95900 / nickel-aluminium bronze castings — Copper Development Association (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.