Copper Alloy C95700
UNS C95700
C95700 is a manganese-bearing aluminum bronze casting alloy from the C90000–C95999 family, strengthened by manganese along with iron and nickel additions.
Reference datasheet — C95700 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 M01 condition
C95700 tempers and conditions
C95700 is supplied in 3 conditions, soft to hard. M01 is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01Default As sand cast | Standard as-cast sand-cast condition for propellers, housings and large marine castings. | 330 | 655 | 26 | 180 HB | 3.1 % IACS |
As centrifugally cast | Pick for rings, bushings and sleeves needing denser, more uniform structure than sand casting. | 350 | 690 | 24 | 190 HB | 3.1 % IACS |
As continuous cast | Choose for stock bar and tube for machined bushings, wear plates and gear blanks. | 360 | 690 | 22 | 195 HB | 3.1 % IACS |
What is C95700?
C95700 is a manganese-bearing aluminum bronze casting alloy from the C90000–C95999 family, strengthened by manganese along with iron and nickel additions. Sand, centrifugal and continuous castings give 330 MPa yield, 655 MPa tensile, 26% elongation and 180 HB (88 HRB), a strength-toughness balance used for ship propellers, heavy gears and marine hardware. Electrical conductivity is only 3.1% IACS, service is limited to about 300 °C and heavy sections need careful gating to avoid oxide entrapment; nickel-aluminum bronzes such as C95820 are preferred for the most aggressive seawater duty. C95700 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). C95700 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 655 MPa (95 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 26% and the elastic modulus is 110 GPa (16 Msi).
What is C95700 used for?
- Ship propellers
- Heavy gears
- Marine hardware
Advantages
- Lightweight — 7.53 g/cm³ (0.272 lb/in³), better than 96% of copper alloy grades
- Good corrosion resistance — 78/100, better than 94% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Readily welded — 65/100, better than 80% of copper alloy grades
Limitations
- Poor heat conductor — 20 W/m·K (11.6 BTU/hr·ft·°F), worse than 100% of copper alloy grades
- Low electrical conductivity — 3.1 % IACS, worse than 99% of copper alloy grades
C95700 properties
Typical room-temperature values for C95700-M01; bars are the position among copper alloy grades.
Physical3
C95700 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).
Mechanical14
C95700 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 655 MPa (95 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 26% and the elastic modulus is 110 GPa (16 Msi).
Thermal5
C95700 is rated for continuous service to 300°C (572 °F). It conducts heat at 20 W/m·K (11.6 BTU/hr·ft·°F), worse than 100% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C95700 conducts electricity at 3.1 % IACS, worse than 99% 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 C95700 takes about 60 MJ of energy and emits 3.8 kg of CO₂ — more than 69% of copper alloy grades. Typical recycled content is 60%.
Manufacturability8
C95700's machinability is fair (45/100, better than 64% of copper alloy grades); weldability good (65/100); 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. C95700 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C95700
Is C95700 easy to machine?
Machines like a tough duplex bronze — rigid setups, positive-rake carbide, moderate speed with heavy feed and flood coolant; gummy chips and hard Fe-rich particles cause edge wear.
Can C95700 be welded?
GTAW/GMAW with matching aluminum-bronze filler (ERCuAl-A2/ERCuMnNiAl); remove alumina film, preheat heavy sections 150–200 °C and control interpass heat to avoid cracking.
Can C95700 be formed, bent or molded?
Casting alloy only — good fluidity but needs bottom/tangential gating and generous risering to prevent oxide entrapment and shrinkage; hot working possible around 800–900 °C, cold forming not practical.
C95700 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 |
| Mnprincipal strengthener of this grade | 11 – 14 | 12.5 |
| Fe | 2 – 4 | 3 |
| NiNi + Co | 1.5 – 3 | 2 |
| Si | ≤ 0.1 | |
| Pb | ≤ 0.03 | |
| CuCu + named elements = 99.5 % min per ASTM B148 | ≥ 71 (balance) |
What surface finishes work on C95700?
Not anodizable; finished by machining, grinding and polishing to a golden lustre, or shot-blasted and painted with epoxy primer for immersed service; nickel/chrome plating requires careful strike layer.
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 C95700 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Other
- ZCuAl8Mn13Fe3Ni2
How much does C95700 cost?
C95700 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.
C95700 — frequently asked
What is C95700 used for?
C95700 is typically used for ship propellers, heavy gears and marine hardware. In short: tough propeller-grade bronze; 26% elongation as cast; high strength, low conductivity.
What is the yield strength of C95700?
C95700 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 655 MPa (95 ksi) — stronger than 69% of copper alloy grades. Strength varies by condition: see the 3 listed tempers.
Is C95700 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 64% of copper alloy grades). Machines like a tough duplex bronze — rigid setups, positive-rake carbide, moderate speed with heavy feed and flood coolant; gummy chips and hard Fe-rich particles cause edge wear.
Can C95700 be welded?
Yes — weldability is rated good (65/100). GTAW/GMAW with matching aluminum-bronze filler (ERCuAl-A2/ERCuMnNiAl); remove alumina film, preheat heavy sections 150–200 °C and control interpass heat to avoid cracking.
What surface finishes work on C95700?
Not anodizable; finished by machining, grinding and polishing to a golden lustre, or shot-blasted and painted with epoxy primer for immersed service; nickel/chrome plating requires careful strike layer.
Can C95700 be formed, bent or molded?
Casting alloy only — good fluidity but needs bottom/tangential gating and generous risering to prevent oxide entrapment and shrinkage; hot working possible around 800–900 °C, cold forming not practical.
What is the maximum service temperature of C95700?
C95700 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 C95700-M01 and C95700-M07?
M01 is the default condition — standard as-cast sand-cast condition for propellers, housings and large marine castings. M07: choose for stock bar and tube for machined bushings, wear plates and gear blanks. Yield strength is 330 MPa in M01 versus 360 MPa in M07.
How much does C95700 cost?
C95700 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 — ASTM International (2019)
- Copper Alloy C95700 datasheet — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol.2 — Properties of Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- GB/T 1176 (ZCuAl8Mn13Fe3Ni2) — SAC (2013)
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.