Copper Alloy C86800-M07
Heat-treated state
UNS C86800
M07 = as continuous cast
Pick for stock bar, tube and hollow bar to be machined into bushings and hydraulic components.
Values for the M07 condition
Other C86800 tempers and conditions
C86800 is listed in 4 conditions; see the grade overview at C86800.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01Default As sand cast | Default stocked/most-produced condition: general-purpose sand castings to ASTM B584. | 290 | 565 | 20 | 150 HB | 7.5 % IACS |
As centrifugally cast | Choose for rings, sleeves and bushings needing denser, more uniform structure than sand cast. | 305 | 590 | 22 | 155 HB | 7.5 % IACS |
As plaster cast | Use for repeat production of small/medium parts where finer grain and better surface than sand cast are wanted. | 305 | 585 | 20 | 155 HB | 7.5 % IACS |
M07This page As continuous cast | Pick for stock bar, tube and hollow bar to be machined into bushings and hydraulic components. | 315 | 600 | 18 | 160 HB | 7.5 % IACS |
What is C86800-M07?
C86800-M07 is C86800 heat treated to M07 — pick for stock bar, tube and hollow bar to be machined into bushings and hydraulic components. C86800-M07 has a yield strength of 315 MPa (45.7 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 67% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi). C86800-M07 has a density of 7.9 g/cm³ (0.285 lb/in³), lighter than 88% of copper alloy grades. It melts at 875°C (1,607 °F). M01 is the default condition FabDigit quotes; M07 is available on request or by drawing note.
Limitations
- Hard to polish — 65/100, worse than 87% of copper alloy grades
- Poor heat conductor — 36 W/m·K (20.8 BTU/hr·ft·°F), worse than 86% of copper alloy grades
- Low electrical conductivity — 7.5 % IACS, worse than 84% of copper alloy grades
C86800-M07 properties
Typical room-temperature values for C86800-M07; 20 are specific to this condition. Other listed values are C86800 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C86800-M07 has a density of 7.9 g/cm³ (0.285 lb/in³), lighter than 88% of copper alloy grades. It melts at 875°C (1,607 °F).
Mechanical15
C86800-M07 has a yield strength of 315 MPa (45.7 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 67% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal5
C86800-M07 is rated for continuous service to 200°C (392 °F). It conducts heat at 36 W/m·K (20.8 BTU/hr·ft·°F), worse than 86% of copper alloy grades. Thermal expansion is 20.5 µm/m·K (11.4 µin/in·°F).
Electrical3
C86800-M07 conducts electricity at 7.5 % IACS, worse than 84% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (63/100), better than 52% of copper alloy grades.
Sustainability4
Producing a kilogram of C86800-M07 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 65%.
Manufacturability7
C86800-M07's machinability is fair (38/100, better than 55% of copper alloy grades); weldability poor (30/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C86800-M07
Is C86800 easy to machine?
Machines like tough manganese bronze: rating ~30% of free-cutting brass — use rigid setups, positive-rake carbide, moderate speeds and generous coolant; chips are stringy, not free-breaking.
Can C86800 be welded?
Fusion welding is difficult (zinc fume, porosity, hot cracking); prefer GTAW/GMAW repair with matched or aluminium-bronze filler, low heat input and preheat control, or braze/mechanical joining.
Can C86800 be formed, bent or molded?
Casting alloy only — good fluidity but wide freezing range, so use tapered risers, chills and clean degassed melt; no cold forming, hot working is limited.
What surface finishes work on C86800?
Not anodizable; finish by shot blasting, grinding/polishing to a bright yellow-gold surface, or electroplate nickel/chrome/tin; seawater parts often left bare or epoxy coated.
C86800 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 | 53.5 – 57 | 55 |
| Mn | 2.5 – 4 | 3.2 |
| NiNi+Co | 2.5 – 4 | 3.2 |
| Fe | 1 – 2.5 | 1.8 |
| Al | ≤ 2 | 1 |
| Sn | ≤ 1 | — |
| Pb | ≤ 0.4 | — |
| Znremainder, typically 32–36% | balance | — |
C86800-M07 — frequently asked
What is C86800-M07 used for?
C86800-M07 is typically used for marine propeller parts, valve bodies, pump components and gears. In short: high-strength marine bronze; 565 MPa cast tensile; difficult to weld.
What is the yield strength of C86800-M07?
C86800-M07 has a typical yield strength of 315 MPa (45.7 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 67% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C86800-M07 easy to machine?
Not especially — machinability is rated fair (38/100, better than 55% of copper alloy grades). Machines like tough manganese bronze: rating ~30% of free-cutting brass — use rigid setups, positive-rake carbide, moderate speeds and generous coolant; chips are stringy, not free-breaking.
Can C86800-M07 be welded?
Not readily — weldability is rated poor (30/100). Fusion welding is difficult (zinc fume, porosity, hot cracking); prefer GTAW/GMAW repair with matched or aluminium-bronze filler, low heat input and preheat control, or braze/mechanical joining.
What surface finishes work on C86800-M07?
Not anodizable; finish by shot blasting, grinding/polishing to a bright yellow-gold surface, or electroplate nickel/chrome/tin; seawater parts often left bare or epoxy coated.
Can C86800-M07 be formed, bent or molded?
Casting alloy only — good fluidity but wide freezing range, so use tapered risers, chills and clean degassed melt; no cold forming, hot working is limited.
What is the maximum service temperature of C86800-M07?
C86800-M07 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C86800-M01 and C86800-M07?
M01 is the default condition — default stocked/most-produced condition: general-purpose sand castings to ASTM B584. M07: pick for stock bar, tube and hollow bar to be machined into bushings and hydraulic components. Yield strength is 290 MPa in M01 versus 315 MPa in M07.
Sources
- ASTM B584 — Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM International (2018)
- ASTM B271 — Copper-Base Alloy Centrifugal Castings — ASTM International (2020)
- CDA UNS alloy datasheet C86800 — Copper Development Association (copper.org) (2024)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.