Copper Alloy C82510-M04
Finish state
UNS C82510 · ASTM B824
M04 = as pressure die cast
Continuous-cast bar/tube stock, dense and low-porosity, supplied for subsequent heat treatment.
Values for the M04 condition
Other C82510 tempers and conditions
C82510 is listed in 5 conditions; see the grade overview at C82510.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution heat treated | Softest, most ductile condition — pick it for heavy machining, straightening or welding before ageing. | 205 | 450 | 30 | 140 HB | 17 % IACS |
As sand cast | Untreated sand-cast condition; use only as a stock condition before solution treating and ageing. | 275 | 515 | 15 | 170 HB | 18 % IACS |
As centrifugally cast | Centrifugal-cast bushings/rings in the untreated state, normally heat treated afterwards. | 290 | 530 | 15 | 180 HB | 18 % IACS |
M04This page As pressure die cast | Continuous-cast bar/tube stock, dense and low-porosity, supplied for subsequent heat treatment. | 300 | 550 | 14 | 190 HB | 18 % IACS |
TF00Default Solution heat treated and precipitation hardened | Standard service condition: maximum strength and hardness with ~20 % IACS conductivity for mould inserts, tooling and non-sparking parts. | 1,035 | 1,105 | 1 | 43 HRC | 20 % IACS |
What is C82510-M04?
C82510-M04 is C82510 supplied in the M04 condition — continuous-cast bar/tube stock, dense and low-porosity, supplied for subsequent heat treatment. C82510-M04 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 550 MPa (79.8 ksi) — stronger than 61% of copper alloy grades. Elongation at break is 14% and the elastic modulus is 128 GPa (18.6 Msi). C82510-M04 has a density of 8.26 g/cm³ (0.298 lb/in³), lighter than 83% of copper alloy grades. It melts at 866°C (1,591 °F). TF00 is the default condition FabDigit quotes; M04 is available on request or by drawing note.
Limitations
- High embodied carbon — 11 kg CO₂/kg, worse than 99% of copper alloy grades
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
C82510-M04 properties
Typical room-temperature values for C82510-M04; 21 are specific to this condition. Other listed values are C82510 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C82510-M04 has a density of 8.26 g/cm³ (0.298 lb/in³), lighter than 83% of copper alloy grades. It melts at 866°C (1,591 °F).
Mechanical13
C82510-M04 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 550 MPa (79.8 ksi) — stronger than 61% of copper alloy grades. Elongation at break is 14% and the elastic modulus is 128 GPa (18.6 Msi).
Thermal5
C82510-M04 is rated for continuous service to 150°C (302 °F). It conducts heat at 95 W/m·K (54.9 BTU/hr·ft·°F), better than 54% of copper alloy grades. Thermal expansion is 17 µm/m·K (9.44 µin/in·°F).
Electrical3
C82510-M04 conducts electricity at 18 % IACS, better than 51% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C82510-M04 takes about 160 MJ of energy and emits 11 kg of CO₂ — more than 100% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
C82510-M04's machinability is fair (43/100, better than 60% of copper alloy grades); weldability fair (45/100); formability poor (22/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C82510-M04
Is C82510 easy to machine?
Rough machine in TB00 and finish after ageing; use sharp carbide tools, positive rake, flood coolant and HEPA-filtered extraction — beryllium-bearing dust and fume require controlled handling.
Can C82510 be welded?
GTAW/EB/laser repair welding is possible with matching BeCu filler in the solution-treated state; re-solution treat and re-age to restore properties, and never grind or weld without local exhaust.
Can C82510 be formed, bent or molded?
Foundry alloy only: pour at ~1050–1100 °C in sand, centrifugal, investment or continuous casting; the silicon addition improves fluidity and reduces misruns compared with C82500.
What surface finishes work on C82510?
Takes a mirror polish in the hardened state; electroless nickel or hard chrome plating is common for mould inserts, and no anodising is applicable.
C82510 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 |
|---|---|---|
| Beprimary hardening element | 1.9 – 2.15 | 2 |
| Cograin refiner, raises Co+Ni+Fe total vs C82500 | 0.9 – 1.1 | 1 |
| Siimproves casting fluidity | 0.2 – 0.35 | 0.25 |
| Al | ≤ 0.15 | — |
| Fe | ≤ 0.2 | — |
| Curemainder, ≈96.5 % | balance | — |
C82510-M04 — frequently asked
What is C82510-M04 used for?
C82510-M04 is typically used for mold and die inserts, wear-resistant bushings and non-sparking tool castings. In short: hardest cast BeCu; improved-castability C82500 variant; 400 HB with 105 W/m·K.
What is the yield strength of C82510-M04?
C82510-M04 has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 550 MPa (79.8 ksi) — stronger than 61% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is C82510-M04 easy to machine?
Not especially — machinability is rated fair (43/100, better than 60% of copper alloy grades). Rough machine in TB00 and finish after ageing; use sharp carbide tools, positive rake, flood coolant and HEPA-filtered extraction — beryllium-bearing dust and fume require controlled handling.
Can C82510-M04 be welded?
With care — weldability is rated fair (45/100). GTAW/EB/laser repair welding is possible with matching BeCu filler in the solution-treated state; re-solution treat and re-age to restore properties, and never grind or weld without local exhaust.
What surface finishes work on C82510-M04?
Takes a mirror polish in the hardened state; electroless nickel or hard chrome plating is common for mould inserts, and no anodising is applicable.
Can C82510-M04 be formed, bent or molded?
Foundry alloy only: pour at ~1050–1100 °C in sand, centrifugal, investment or continuous casting; the silicon addition improves fluidity and reduces misruns compared with C82500.
What is the maximum service temperature of C82510-M04?
C82510-M04 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C82510-TF00 and C82510-TB00?
TF00 is the default condition — standard service condition: maximum strength and hardness with ~20 % IACS conductivity for mould inserts, tooling and non-sparking parts. TB00: softest, most ductile condition — pick it for heavy machining, straightening or welding before ageing. Yield strength is 1,035 MPa in TF00 versus 205 MPa in TB00.
Sources
- ASTM B824 — Standard Specification for General Requirements for Copper Alloy Castings — ASTM International (2022)
- ASTM B770 — Copper-Beryllium Alloy Sand Castings for General Applications — ASTM International (2019)
- CDA/UNS alloy datasheet C82510 — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- Cast beryllium copper mould alloy technical data — Materion Brush Performance Alloys (2022)
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.