Copper Alloy ZCuAl9Mn2
ZCuAl9Mn2 (CC330G) is a cast aluminium bronze with about 9 % aluminium and 2 % manganese, a binary-type alloy that relies on its aluminium-rich structure rather than heat treatment for properties.
Reference datasheet — ZCuAl9Mn2 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 S condition
ZCuAl9Mn2 tempers and conditions
ZCuAl9Mn2 is supplied in 5 conditions, soft to hard. S 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 |
|---|---|---|---|---|---|---|
Stress relieved | Used after welding or heavy machining to relieve residual stress and improve dimensional stability; slightly softens the casting. | 155 | 410 | 30 | 88 HB | 13.5 % IACS |
SDefault Sand cast | Standard general-purpose condition for medium and large marine/industrial castings. | 165 | 430 | 25 | 95 HB | 13 % IACS |
Permanent (metal) mould cast, as-cast | Chill-cast smaller parts: finer grain gives ~10 % higher strength and hardness than sand cast. | 190 | 480 | 24 | 105 HB | 13 % IACS |
Centrifugally cast | Choose for bushings, sleeves and worm-wheel rims where a dense, inclusion-free wall is needed. | 195 | 490 | 25 | 108 HB | 13 % IACS |
Continuously cast bar / tube | Stock bar and hollow for machined bushings, nuts and valve parts; most uniform and lowest-porosity form. | 200 | 500 | 22 | 110 HB | 13 % IACS |
What is ZCuAl9Mn2?
ZCuAl9Mn2 (CC330G) is a cast aluminium bronze with about 9 % aluminium and 2 % manganese, a binary-type alloy that relies on its aluminium-rich structure rather than heat treatment for properties. Engineers use it for general marine and industrial castings because it combines moderate strength (165 MPa yield, 430 MPa tensile, 95 HB) with high ductility at 25 % elongation and good corrosion resistance; it is poured as sand, chill, centrifugal and continuous castings. Service is limited to about 300 °C and thick sections need careful risering because shrinkage is roughly 1.8–2 %. Where more strength and wear resistance are required, ZCuAl10Fe3 is the next step up. ZCuAl9Mn2 has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 93% of copper alloy grades. It melts at 1,040°C (1,904 °F). ZCuAl9Mn2 has a yield strength of 165 MPa (23.9 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 64% of copper alloy grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi).
What is ZCuAl9Mn2 used for?
- pump impellers
- valve bodies
- marine hardware
Advantages
- Lightweight — 7.6 g/cm³ (0.275 lb/in³), better than 93% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Readily welded — 70/100, better than 85% of copper alloy grades
ZCuAl9Mn2 properties
Typical room-temperature values for ZCuAl9Mn2-S; bars are the position among copper alloy grades.
Physical3
ZCuAl9Mn2 has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 93% of copper alloy grades. It melts at 1,040°C (1,904 °F).
Mechanical16
ZCuAl9Mn2 has a yield strength of 165 MPa (23.9 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 64% of copper alloy grades. Elongation at break is 25% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
ZCuAl9Mn2 is rated for continuous service to 300°C (572 °F). It conducts heat at 50 W/m·K (28.9 BTU/hr·ft·°F), worse than 66% of copper alloy grades. Thermal expansion is 16.8 µm/m·K (9.33 µin/in·°F).
Electrical3
ZCuAl9Mn2 conducts electricity at 13 % IACS, worse than 58% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of ZCuAl9Mn2 takes about 55 MJ of energy and emits 3.8 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 65%.
Manufacturability8
ZCuAl9Mn2's machinability is fair (40/100, better than 57% of copper alloy grades); weldability very good (70/100); formability poor (25/100).
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. ZCuAl9Mn2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ZCuAl9Mn2
Is ZCuAl9Mn2 easy to machine?
Machines like a tough ductile bronze — use sharp positive-rake carbide, moderate speed (60–120 m/min), heavy feed and generous coolant to break stringy chips; avoid dwelling to prevent work hardening.
Can ZCuAl9Mn2 be welded?
Readily GTAW/GMAW welded with matching Al-bronze filler (ER CuAl-A2 type) under argon; clean the alumina film mechanically before welding and preheat 150–250 °C on heavy sections, then stress relieve.
Can ZCuAl9Mn2 be formed, bent or molded?
Foundry alloy: bottom-gate with generous filtration and non-turbulent fill to avoid oxide skins, feed with adequate risers because of the wide-ish freezing range and high shrinkage (~1.8–2 %).
ZCuAl9Mn2 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 |
|---|---|---|
| Alprincipal strengthening element | 8 – 10 | 9 |
| Mnsolid-solution strengthening, deoxidation | 1.5 – 2.5 | 2 |
| Feimpurity limit | ≤ 1 | |
| Znimpurity limit | ≤ 1.5 | |
| Siimpurity limit | ≤ 0.2 | |
| Snimpurity limit | ≤ 0.2 | |
| Pbimpurity limit | ≤ 0.1 | |
| Cubalance, ≈88–90% | balance |
What surface finishes work on ZCuAl9Mn2?
Cannot be anodized; polishes to a bright golden surface, and can be sand-blasted, chemically passivated or protected with clear lacquer/epoxy for marine service.
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 ZCuAl9Mn2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Similar grades
- CC330G
How much does ZCuAl9Mn2 cost?
ZCuAl9Mn2 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.
ZCuAl9Mn2 — frequently asked
What is ZCuAl9Mn2 used for?
ZCuAl9Mn2 is typically used for pump impellers, valve bodies and marine hardware. In short: ductile aluminium bronze; good seawater resistance; weldable cast bronze.
What is the yield strength of ZCuAl9Mn2?
ZCuAl9Mn2 has a typical yield strength of 165 MPa (23.9 ksi) and a tensile strength of 430 MPa (62.4 ksi) — weaker than 64% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is ZCuAl9Mn2 easy to machine?
Not especially — machinability is rated fair (40/100, better than 57% of copper alloy grades). Machines like a tough ductile bronze — use sharp positive-rake carbide, moderate speed (60–120 m/min), heavy feed and generous coolant to break stringy chips; avoid dwelling to prevent work hardening.
Can ZCuAl9Mn2 be welded?
Yes — weldability is rated very good (70/100). Readily GTAW/GMAW welded with matching Al-bronze filler (ER CuAl-A2 type) under argon; clean the alumina film mechanically before welding and preheat 150–250 °C on heavy sections, then stress relieve.
What surface finishes work on ZCuAl9Mn2?
Cannot be anodized; polishes to a bright golden surface, and can be sand-blasted, chemically passivated or protected with clear lacquer/epoxy for marine service.
Can ZCuAl9Mn2 be formed, bent or molded?
Foundry alloy: bottom-gate with generous filtration and non-turbulent fill to avoid oxide skins, feed with adequate risers because of the wide-ish freezing range and high shrinkage (~1.8–2 %).
What is the maximum service temperature of ZCuAl9Mn2?
ZCuAl9Mn2 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 ZCuAl9Mn2-S and ZCuAl9Mn2-La?
S is the default condition — standard general-purpose condition for medium and large marine/industrial castings. La: stock bar and hollow for machined bushings, nuts and valve parts; most uniform and lowest-porosity form. Yield strength is 165 MPa in S versus 200 MPa in La.
How much does ZCuAl9Mn2 cost?
ZCuAl9Mn2 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 (Aluminum Bronzes) — ASM International (1990)
- CDA alloy datasheets, C95200/C95300 cast aluminium bronze — Copper Development Association (2020)
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.