Copper Alloy C80500-M07
Heat-treated state
UNS C80500 · ASTM B369
M07 = as continuous cast
Bar and tube stock for machined conductive components; densest and most uniform structure of the cast conditions.
Values for the M07 condition
Other C80500 tempers and conditions
C80500 is listed in 6 conditions; see the grade overview at C80500.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As chill cast | For thin-walled, fine-detail conductive parts where surface finish matters more than strength. | 60 | 175 | 40 | 43 HB | 92 % IACS |
M01Default As sand cast | Standard stocked condition for general electrical/thermal copper castings of moderate size and complexity. | 62 | 180 | 40 | 44 HB | 92 % IACS |
As investment cast | Complex near-net-shape conductive parts (contact fingers, clamps) with minimal machining. | 65 | 180 | 38 | 45 HB | 92 % IACS |
As centrifugally cast | Choose for rings, bushings and hollow conductor bodies needing denser, more gas-free structure than sand casting. | 70 | 195 | 40 | 48 HB | 92 % IACS |
As plaster cast | Medium-volume runs of switchgear contacts and terminals where finer grain and tighter tolerance are wanted. | 70 | 195 | 40 | 48 HB | 92 % IACS |
M07This page As continuous cast | Bar and tube stock for machined conductive components; densest and most uniform structure of the cast conditions. | 78 | 210 | 35 | 50 HB | 92 % IACS |
What is C80500-M07?
C80500-M07 is C80500 heat treated to M07 — bar and tube stock for machined conductive components; densest and most uniform structure of the cast conditions. C80500-M07 has a yield strength of 78 MPa (11.3 ksi) and a tensile strength of 210 MPa (30.5 ksi) — weaker than 90% of copper alloy grades. Elongation at break is 35% and the elastic modulus is 118 GPa (17.1 Msi). C80500-M07 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F). M01 is the default condition FabDigit quotes; M07 is available on request or by drawing note.
Advantages
- Conducts heat well — 355 W/m·K (205.1 BTU/hr·ft·°F), better than 90% of copper alloy grades
- High electrical conductivity — 92 % IACS, better than 89% of copper alloy grades
- Ductile — tolerates forming and impact — 35%, better than 80% of copper alloy grades
- Readily welded — 60/100, better than 76% of copper alloy grades
Limitations
- Low strength — 78 MPa (11.3 ksi), worse than 90% of copper alloy grades
- Difficult to machine — 25/100, worse than 86% of copper alloy grades
C80500-M07 properties
Typical room-temperature values for C80500-M07; 19 are specific to this condition. Other listed values are C80500 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C80500-M07 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Mechanical13
C80500-M07 has a yield strength of 78 MPa (11.3 ksi) and a tensile strength of 210 MPa (30.5 ksi) — weaker than 90% of copper alloy grades. Elongation at break is 35% and the elastic modulus is 118 GPa (17.1 Msi).
Thermal6
C80500-M07 is rated for continuous service to 200°C (392 °F). It conducts heat at 355 W/m·K (205.1 BTU/hr·ft·°F), better than 90% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
C80500-M07 conducts electricity at 92 % IACS, better than 89% 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 C80500-M07 takes about 55 MJ of energy and emits 3.8 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 30%.
Manufacturability8
C80500-M07's machinability is poor (25/100, worse than 86% of copper alloy grades); weldability good (60/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C80500-M07
Is C80500 easy to machine?
Gummy and long-chipping — use sharp, high-rake, polished-flute tools, high speed with light feed and copious flood coolant; rating ≈20% of free-cutting brass.
Can C80500 be welded?
Good with GTAW/GMAW using ERCu filler and preheat 200–400 °C on heavy sections; keep interpass short and avoid hydrogen pickup — brazing and soldering are excellent.
Can C80500 be formed, bent or molded?
Melt under charcoal/inert cover, deoxidize and pour hot with generous risers and chills — copper's high shrinkage (~4%) and gas solubility cause porosity if degassing is skipped.
What surface finishes work on C80500?
Not anodizable; buff/polish easily, electroplate Ni, Sn or Ag for contact surfaces, or apply lacquer/chemical patina to control oxidation.
C80500 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 |
|---|---|---|
| Bboron added as deoxidizer | 0.02 – 0.04 | 0.03 |
| CuCu including Ag, minimum | ≥ 99.75 (balance) | — |
C80500-M07 — frequently asked
What is C80500-M07 used for?
C80500-M07 is typically used for general conductive copper castings, electrical hardware and terminal castings, switchgear clamps and connectors, heat-transfer castings, cooling jackets and grounding and bonding hardware. In short: general-purpose cast copper; 92% IACS conductivity; excellent brazing and soldering.
What is the yield strength of C80500-M07?
C80500-M07 has a typical yield strength of 78 MPa (11.3 ksi) and a tensile strength of 210 MPa (30.5 ksi) — weaker than 90% of copper alloy grades. Strength varies by condition: see the 6 listed tempers.
Is C80500-M07 easy to machine?
Not especially — machinability is rated poor (25/100, worse than 86% of copper alloy grades). Gummy and long-chipping — use sharp, high-rake, polished-flute tools, high speed with light feed and copious flood coolant; rating ≈20% of free-cutting brass.
Can C80500-M07 be welded?
Yes — weldability is rated good (60/100). Good with GTAW/GMAW using ERCu filler and preheat 200–400 °C on heavy sections; keep interpass short and avoid hydrogen pickup — brazing and soldering are excellent.
What surface finishes work on C80500-M07?
Not anodizable; buff/polish easily, electroplate Ni, Sn or Ag for contact surfaces, or apply lacquer/chemical patina to control oxidation.
Can C80500-M07 be formed, bent or molded?
Melt under charcoal/inert cover, deoxidize and pour hot with generous risers and chills — copper's high shrinkage (~4%) and gas solubility cause porosity if degassing is skipped.
What is the maximum service temperature of C80500-M07?
C80500-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 C80500-M01 and C80500-M07?
M01 is the default condition — standard stocked condition for general electrical/thermal copper castings of moderate size and complexity. M07: bar and tube stock for machined conductive components; densest and most uniform structure of the cast conditions. Yield strength is 62 MPa in M01 versus 78 MPa in M07.
Sources
- ASTM B824 — Standard Specification for General Requirements for Copper Alloy Castings — ASTM International (2022)
- ASTM B369 — Copper-Nickel Alloy Castings (referenced alias) — ASTM International (2020)
- CDA Cast Copper Alloy Data — C80500 — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
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.