Copper Alloy ZCuZn26Al4Fe3Mn3
ZCuZn26Al4Fe3Mn3 is the highest-strength complex cast brass in this group, alloyed with aluminium, iron and manganese and roughly corresponding to EN CC762S.
Reference datasheet — ZCuZn26Al4Fe3Mn3 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
ZCuZn26Al4Fe3Mn3 tempers and conditions
ZCuZn26Al4Fe3Mn3 is supplied in 4 conditions, soft to hard. S is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SDefault Sand cast | Most common condition for one-off and small-batch heavy gears, nuts and housings. | 330 | 620 | 20 | 160 HB | 8 % IACS |
Permanent (metal) mould cast | Pick for repeat production parts needing finer grain, higher hardness and tighter dimensions. | 350 | 660 | 20 | 170 HB | 8 % IACS |
Continuously cast bar/tube | Stock bar and tube form for machined nuts, bushings and gear blanks with uniform structure. | 350 | 660 | 20 | 170 HB | 8 % IACS |
Centrifugally cast | Best choice for worm-gear rims, bushings and sleeves — dense, porosity-free wall with highest strength. | 360 | 680 | 20 | 175 HB | 8.5 % IACS |
What is ZCuZn26Al4Fe3Mn3?
ZCuZn26Al4Fe3Mn3 is the highest-strength complex cast brass in this group, alloyed with aluminium, iron and manganese and roughly corresponding to EN CC762S. Default-condition values are 330 MPa yield, 620 MPa tensile, 20% elongation and about 160 HB, with service to 250 °C, supplied as sand, permanent-mould, centrifugal and continuous castings for heavily stressed gears and bearings. The hard Fe-Al particles are abrasive to tooling, fusion welding is normally avoided, and the wide freezing range demands careful feeding. Where machinability or weld repair matters more than strength, use ZCuZn35Al2Mn2Fe1. ZCuZn26Al4Fe3Mn3 has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 93% of copper alloy grades. It melts at 880°C (1,616 °F). ZCuZn26Al4Fe3Mn3 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 100 GPa (14.5 Msi).
What is ZCuZn26Al4Fe3Mn3 used for?
- marine propellers
- heavy-duty gears
- bearing bushings
Advantages
- Lightweight — 7.6 g/cm³ (0.275 lb/in³), better than 93% of copper alloy grades
Limitations
- Hard to polish — 60/100, worse than 92% of copper alloy grades
- Low stiffness — 100 GPa (14.5 Msi), worse than 82% of copper alloy grades
- Poor heat conductor — 40 W/m·K (23.1 BTU/hr·ft·°F), worse than 82% of copper alloy grades
- Low electrical conductivity — 8 % IACS, worse than 81% of copper alloy grades
- Limited formability — 15/100, worse than 79% of copper alloy grades
ZCuZn26Al4Fe3Mn3 properties
Typical room-temperature values for ZCuZn26Al4Fe3Mn3-S; bars are the position among copper alloy grades.
Physical3
ZCuZn26Al4Fe3Mn3 has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 93% of copper alloy grades. It melts at 880°C (1,616 °F).
Mechanical14
ZCuZn26Al4Fe3Mn3 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 100 GPa (14.5 Msi).
Thermal6
ZCuZn26Al4Fe3Mn3 is rated for continuous service to 250°C (482 °F). It conducts heat at 40 W/m·K (23.1 BTU/hr·ft·°F), worse than 82% of copper alloy grades. Thermal expansion is 19.5 µm/m·K (10.8 µin/in·°F).
Electrical3
ZCuZn26Al4Fe3Mn3 conducts electricity at 8 % IACS, worse than 81% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 68% of copper alloy grades.
Sustainability4
Producing a kilogram of ZCuZn26Al4Fe3Mn3 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 60%.
Manufacturability8
ZCuZn26Al4Fe3Mn3's machinability is fair (35/100, better than 51% of copper alloy grades); weldability poor (30/100); formability poor (15/100).
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. ZCuZn26Al4Fe3Mn3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ZCuZn26Al4Fe3Mn3
Is ZCuZn26Al4Fe3Mn3 easy to machine?
Machines like a tough gummy bronze — rigid setups, sharp carbide (K10/K20) with positive rake, moderate speed and generous feed; hard Fe-Al particles cause abrasive tool wear.
Can ZCuZn26Al4Fe3Mn3 be welded?
Fusion welding is generally avoided; if unavoidable use GTAW with Al-bronze filler, preheat 150–250 °C and strong Zn-fume extraction — repair welds should be stress-relieved.
Can ZCuZn26Al4Fe3Mn3 be formed, bent or molded?
Casting alloy only: pour 980–1050 °C with fluxed, deoxidized melt, bottom or tilt gating to avoid Al oxide films, and adequate feeders because of the wide freezing range.
ZCuZn26Al4Fe3Mn3 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 |
|---|---|---|
| Cu | 60 – 66 | 63 |
| Al | 2.5 – 5 | 4 |
| Fe | 2 – 4 | 3 |
| Mn | 2.5 – 5 | 3.5 |
| Niimpurity, counted in total | ≤ 3 | |
| Pbimpurity | ≤ 0.2 | |
| Snimpurity | ≤ 0.2 | |
| Siimpurity | ≤ 0.1 | |
| Other (total impurities)GB/T 1176 total impurity limit | ≤ 2 | |
| Znnominally ~26 % | balance |
What surface finishes work on ZCuZn26Al4Fe3Mn3?
Cannot be anodized; finish by machining/polishing, shot blasting, or Ni/Cr plating; stress-relieve 250–300 °C before service in ammonia-bearing environments to limit SCC.
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 ZCuZn26Al4Fe3Mn3 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Similar grades
- CC762S
How much does ZCuZn26Al4Fe3Mn3 cost?
ZCuZn26Al4Fe3Mn3 is a premium-cost copper alloy ($$$), cheaper than about 51% 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.
ZCuZn26Al4Fe3Mn3 — frequently asked
What is ZCuZn26Al4Fe3Mn3 used for?
ZCuZn26Al4Fe3Mn3 is typically used for marine propellers, heavy-duty gears and bearing bushings. In short: strongest cast brass here; 620 MPa as-cast tensile; abrasive to cutting tools.
What is the yield strength of ZCuZn26Al4Fe3Mn3?
ZCuZn26Al4Fe3Mn3 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 69% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is ZCuZn26Al4Fe3Mn3 easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of copper alloy grades). Machines like a tough gummy bronze — rigid setups, sharp carbide (K10/K20) with positive rake, moderate speed and generous feed; hard Fe-Al particles cause abrasive tool wear.
Can ZCuZn26Al4Fe3Mn3 be welded?
Not readily — weldability is rated poor (30/100). Fusion welding is generally avoided; if unavoidable use GTAW with Al-bronze filler, preheat 150–250 °C and strong Zn-fume extraction — repair welds should be stress-relieved.
What surface finishes work on ZCuZn26Al4Fe3Mn3?
Cannot be anodized; finish by machining/polishing, shot blasting, or Ni/Cr plating; stress-relieve 250–300 °C before service in ammonia-bearing environments to limit SCC.
Can ZCuZn26Al4Fe3Mn3 be formed, bent or molded?
Casting alloy only: pour 980–1050 °C with fluxed, deoxidized melt, bottom or tilt gating to avoid Al oxide films, and adequate feeders because of the wide freezing range.
What is the maximum service temperature of ZCuZn26Al4Fe3Mn3?
ZCuZn26Al4Fe3Mn3 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 ZCuZn26Al4Fe3Mn3-S and ZCuZn26Al4Fe3Mn3-Li?
S is the default condition — most common condition for one-off and small-batch heavy gears, nuts and housings. Li: best choice for worm-gear rims, bushings and sleeves — dense, porosity-free wall with highest strength. Yield strength is 330 MPa in S versus 360 MPa in Li.
How much does ZCuZn26Al4Fe3Mn3 cost?
ZCuZn26Al4Fe3Mn3 is a premium-cost copper alloy ($$$), cheaper than about 51% 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 (CC762S) — CEN (2017)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- CDA copper alloy datasheets (manganese bronze family) — 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.