Copper Alloy ZCuAl8Mn13Fe3Ni2
UNS C95700
ZCuAl8Mn13Fe3Ni2 (C95700) is a high-manganese aluminium bronze casting alloy with about 8 % Al, 13 % Mn, 3 % Fe and 2 % Ni, whose duplex structure gives the highest strength and toughness in this family: 320 MPa yield, 690 MPa tensile, 22 % elongation and 180 HB.
Reference datasheet — ZCuAl8Mn13Fe3Ni2 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
ZCuAl8Mn13Fe3Ni2 tempers and conditions
ZCuAl8Mn13Fe3Ni2 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 | Applied to welded or heavily machined marine castings to relieve residual stress and reduce SCC risk, at a small cost in strength. | 300 | 670 | 25 | 170 HB | 3.2 % IACS |
SDefault Sand cast | Standard supply condition for propellers, blades and large marine castings of any shape/size. | 320 | 690 | 22 | 10 HRC | 3 % IACS |
Centrifugal cast | Used for rings, large bushings and bearing sleeves needing sound, porosity-free walls. | 335 | 700 | 20 | 185 HB | 3 % IACS |
Permanent (metal) mould cast | Choose for smaller serial parts (bushings, valve bodies) where the faster chill gives finer structure and higher strength. | 340 | 715 | 20 | 12 HRC | 3 % IACS |
Continuous cast bar/tube | Best for machined bar and sleeve stock: dense, directionally solidified structure with the highest guaranteed strength. | 345 | 700 | 19 | 11 HRC | 3 % IACS |
What is ZCuAl8Mn13Fe3Ni2?
ZCuAl8Mn13Fe3Ni2 (C95700) is a high-manganese aluminium bronze casting alloy with about 8 % Al, 13 % Mn, 3 % Fe and 2 % Ni, whose duplex structure gives the highest strength and toughness in this family: 320 MPa yield, 690 MPa tensile, 22 % elongation and 180 HB. It is used for large, heavily loaded seawater castings, poured by sand, chill, centrifugal and continuous methods and often supplied stress relieved (SR). Service temperature is limited to about 300 °C, machining runs at roughly half the rate of free-cutting brass, and thick hubs need controlled gating to avoid alumina inclusions and shrinkage porosity. ZCuAl10Fe3Mn2 is the lower-strength alternative. ZCuAl8Mn13Fe3Ni2 has a density of 7.53 g/cm³ (0.272 lb/in³), lighter than 96% of copper alloy grades. It melts at 870°C (1,598 °F). ZCuAl8Mn13Fe3Ni2 has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 68% of copper alloy grades. Elongation at break is 22% and the elastic modulus is 120 GPa (17.4 Msi).
What is ZCuAl8Mn13Fe3Ni2 used for?
- ship propellers
- high-strength structural castings
- marine hardware
Advantages
- Lightweight — 7.53 g/cm³ (0.272 lb/in³), better than 96% of copper alloy grades
- Good corrosion resistance — 75/100, better than 90% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Readily welded — 60/100, better than 76% of copper alloy grades
Limitations
- Poor heat conductor — 12 W/m·K (6.93 BTU/hr·ft·°F), worse than 100% of copper alloy grades
- Low electrical conductivity — 3 % IACS, worse than 100% of copper alloy grades
ZCuAl8Mn13Fe3Ni2 properties
Typical room-temperature values for ZCuAl8Mn13Fe3Ni2-S; bars are the position among copper alloy grades.
Physical3
ZCuAl8Mn13Fe3Ni2 has a density of 7.53 g/cm³ (0.272 lb/in³), lighter than 96% of copper alloy grades. It melts at 870°C (1,598 °F).
Mechanical16
ZCuAl8Mn13Fe3Ni2 has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 68% of copper alloy grades. Elongation at break is 22% and the elastic modulus is 120 GPa (17.4 Msi).
Thermal5
ZCuAl8Mn13Fe3Ni2 is rated for continuous service to 300°C (572 °F). It conducts heat at 12 W/m·K (6.93 BTU/hr·ft·°F), worse than 100% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
ZCuAl8Mn13Fe3Ni2 conducts electricity at 3 % IACS, worse than 100% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (75/100), better than 90% of copper alloy grades.
Sustainability4
Producing a kilogram of ZCuAl8Mn13Fe3Ni2 takes about 50 MJ of energy and emits 3.5 kg of CO₂ — less than 89% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
ZCuAl8Mn13Fe3Ni2's machinability is fair (45/100, better than 64% of copper alloy grades); weldability good (60/100); formability poor (20/100).
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. ZCuAl8Mn13Fe3Ni2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ZCuAl8Mn13Fe3Ni2
Is ZCuAl8Mn13Fe3Ni2 easy to machine?
Machines like a tough duplex bronze (~50 % of free-cutting brass): rigid setup, sharp positive-rake carbide, moderate speed with generous coolant; hard Fe/κ particles abrade tooling.
Can ZCuAl8Mn13Fe3Ni2 be welded?
Weldable by GTAW/GMAW with aluminium-bronze filler (ECuAl-A2 / ERCuNiAl type), 100–200 °C preheat on heavy sections and thorough interpass oxide removal; stress relieve highly restrained repairs.
Can ZCuAl8Mn13Fe3Ni2 be formed, bent or molded?
Casting alloy only — no cold forming; use good gating/filtration to avoid alumina inclusions and control section thickness to limit shrinkage porosity in thick hubs.
ZCuAl8Mn13Fe3Ni2 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 | 7 – 8.5 | 7.8 |
| MnASTM B148 C95700: 11.0–14.0 | 11.5 – 14 | 13 |
| FeASTM B148 C95700: 2.0–4.0 | 2.5 – 4 | 3 |
| NiASTM B148 C95700: 1.5–3.0 | 1.8 – 2.5 | 2 |
| Siimpurity limit | ≤ 0.15 | |
| Pbimpurity limit | ≤ 0.03 | |
| Znimpurity limit | ≤ 0.5 | |
| Snimpurity limit | ≤ 0.2 | |
| Cu≈71–77 % (remainder) | balance |
What surface finishes work on ZCuAl8Mn13Fe3Ni2?
Not anodizable; grinds and polishes to a bright golden finish, accepts electroless Ni or paint after grit blast; in seawater service leave bare and protect galvanically with Zn/Al anodes when coupled to steel.
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 ZCuAl8Mn13Fe3Ni2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- C95700
How much does ZCuAl8Mn13Fe3Ni2 cost?
ZCuAl8Mn13Fe3Ni2 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.
ZCuAl8Mn13Fe3Ni2 — frequently asked
What is ZCuAl8Mn13Fe3Ni2 used for?
ZCuAl8Mn13Fe3Ni2 is typically used for ship propellers, high-strength structural castings and marine hardware. In short: strongest cast aluminium bronze; propeller-grade toughness; slow to machine.
What is the yield strength of ZCuAl8Mn13Fe3Ni2?
ZCuAl8Mn13Fe3Ni2 has a typical yield strength of 320 MPa (46.4 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 68% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is ZCuAl8Mn13Fe3Ni2 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 64% of copper alloy grades). Machines like a tough duplex bronze (~50 % of free-cutting brass): rigid setup, sharp positive-rake carbide, moderate speed with generous coolant; hard Fe/κ particles abrade tooling.
Can ZCuAl8Mn13Fe3Ni2 be welded?
Yes — weldability is rated good (60/100). Weldable by GTAW/GMAW with aluminium-bronze filler (ECuAl-A2 / ERCuNiAl type), 100–200 °C preheat on heavy sections and thorough interpass oxide removal; stress relieve highly restrained repairs.
What surface finishes work on ZCuAl8Mn13Fe3Ni2?
Not anodizable; grinds and polishes to a bright golden finish, accepts electroless Ni or paint after grit blast; in seawater service leave bare and protect galvanically with Zn/Al anodes when coupled to steel.
Can ZCuAl8Mn13Fe3Ni2 be formed, bent or molded?
Casting alloy only — no cold forming; use good gating/filtration to avoid alumina inclusions and control section thickness to limit shrinkage porosity in thick hubs.
What is the maximum service temperature of ZCuAl8Mn13Fe3Ni2?
ZCuAl8Mn13Fe3Ni2 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 ZCuAl8Mn13Fe3Ni2-S and ZCuAl8Mn13Fe3Ni2-La?
S is the default condition — standard supply condition for propellers, blades and large marine castings of any shape/size. La: best for machined bar and sleeve stock: dense, directionally solidified structure with the highest guaranteed strength. Yield strength is 320 MPa in S versus 345 MPa in La.
How much does ZCuAl8Mn13Fe3Ni2 cost?
ZCuAl8Mn13Fe3Ni2 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
- ASTM B148 — Aluminum-Bronze Sand Castings (C95700) — ASTM (2019)
- ASTM B505/B505M — Continuous Cast Copper Alloys — ASTM (2018)
- CDA Alloy Datasheet C95700 — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties of Copper Alloys — ASM International (1990)
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.