Copper Alloy C82600-TF00
Precip hard · default condition
UNS C82600 · ASTM B824
TF00 = solution heat treated and precipitation hardened
Standard supply condition for mould inserts, bushings and non-sparking tools: maximum hardness and strength with ~20 % IACS conductivity.
Values for the TF00 condition
Other C82600 tempers and conditions
C82600 is listed in 4 conditions; see the grade overview at C82600.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution heat treated | Soft, tough condition (≈790–800 °C solutionise + quench) used for straightening, heavy machining or welding before precipitation ageing. | 240 | 520 | 20 | 120 HB | 17 % IACS |
As sand cast | As-cast C82600 (2.4–2.7 % Be beryllium copper casting alloy): moderately hard, brittle as-cast state normally solution treated and aged before service. | 310 | 620 | 1 | 26 HRC | 19 % IACS |
Thermomechanically controlled processed | Pick for rough castings that will be machined and then aged, or for low-stress wear parts where full strength is not needed. | 345 | 550 | 1.5 | 200 HB | 16 % IACS |
TF00DefaultThis page Solution heat treated and precipitation hardened | Standard supply condition for mould inserts, bushings and non-sparking tools: maximum hardness and strength with ~20 % IACS conductivity. | 1,035 | 1,140 | 1 | 43 HRC | 20 % IACS |
What is C82600-TF00?
C82600-TF00 is C82600 in the TF00 condition — standard supply condition for mould inserts, bushings and non-sparking tools: maximum hardness and strength with ~20 % IACS conductivity. C82600-TF00 has a yield strength of 1,035 MPa (150 ksi) and a tensile strength of 1,140 MPa (165 ksi) — stronger than 100% of copper alloy grades. Elongation at break is 1% and the elastic modulus is 131 GPa (19 Msi). C82600-TF00 has a density of 8.23 g/cm³ (0.297 lb/in³), lighter than 85% of copper alloy grades. It melts at 857°C (1,575 °F).
Advantages
- High strength — 1,035 MPa (150 ksi), better than 100% of copper alloy grades
- Polishes to a fine finish — 85/100, better than 92% of copper alloy grades
- Stiff — 131 GPa (19 Msi), better than 91% of copper alloy grades
Limitations
- Limited ductility — 1%, worse than 99% of copper alloy grades
- Limited formability — 5/100, worse than 98% of copper alloy grades
- High embodied carbon — 6.5 kg CO₂/kg, worse than 94% of copper alloy grades
C82600-TF00 properties
Typical room-temperature values for C82600-TF00; 21 are specific to this condition. Other listed values are C82600 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C82600-TF00 has a density of 8.23 g/cm³ (0.297 lb/in³), lighter than 85% of copper alloy grades. It melts at 857°C (1,575 °F).
Mechanical13
C82600-TF00 has a yield strength of 1,035 MPa (150 ksi) and a tensile strength of 1,140 MPa (165 ksi) — stronger than 100% of copper alloy grades. Elongation at break is 1% and the elastic modulus is 131 GPa (19 Msi).
Thermal5
C82600-TF00 is rated for continuous service to 200°C (392 °F). It conducts heat at 105 W/m·K (60.7 BTU/hr·ft·°F), better than 56% of copper alloy grades. Thermal expansion is 17.5 µm/m·K (9.72 µin/in·°F).
Electrical3
C82600-TF00 conducts electricity at 20 % IACS, better than 52% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 58% of copper alloy grades.
Sustainability4
Producing a kilogram of C82600-TF00 takes about 95 MJ of energy and emits 6.5 kg of CO₂ — more than 95% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
C82600-TF00's machinability is fair (45/100, better than 64% of copper alloy grades); weldability poor (30/100); formability not recommended (5/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C82600-TF00
Is C82600 easy to machine?
Machines like a hard bronze but abrasively in the aged state — carbide tooling, positive rake, rigid setups; wet cutting plus local exhaust is mandatory to control beryllium-bearing dust.
Can C82600 be welded?
GTAW/resistance welding possible with matching BeCu filler, best done in the solution-treated state and re-aged afterwards; always weld with fume extraction.
Can C82600 be formed, bent or molded?
Supplied as sand, investment or permanent-mould castings; the aged material is essentially non-formable, so shape must come from the casting plus machining.
What surface finishes work on C82600?
Not anodisable — polishes to a fine mould finish and accepts electroless nickel, hard chrome or tin plating; passivate or lacquer to limit tarnish.
C82600 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 | 2.25 – 2.55 | 2.4 |
| Cograin refiner; Ni may substitute in part | 0.35 – 0.65 | 0.5 |
| Si | 0.2 – 0.35 | 0.25 |
| Fe | ≤ 0.25 | — |
| Al | ≤ 0.15 | — |
| Curemainder, ≈96 % | balance | — |
C82600-TF00 — frequently asked
What is C82600-TF00 used for?
C82600-TF00 is typically used for mold and die inserts, wear-resistant bearings and non-sparking tool castings. In short: harder than C82500 castings; tool hardness with copper conductivity; non-sparking cast tooling.
What is the yield strength of C82600-TF00?
C82600-TF00 has a typical yield strength of 1,035 MPa (150 ksi) and a tensile strength of 1,140 MPa (165 ksi) — stronger than 100% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C82600-TF00 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 64% of copper alloy grades). Machines like a hard bronze but abrasively in the aged state — carbide tooling, positive rake, rigid setups; wet cutting plus local exhaust is mandatory to control beryllium-bearing dust.
Can C82600-TF00 be welded?
Not readily — weldability is rated poor (30/100). GTAW/resistance welding possible with matching BeCu filler, best done in the solution-treated state and re-aged afterwards; always weld with fume extraction.
What surface finishes work on C82600-TF00?
Not anodisable — polishes to a fine mould finish and accepts electroless nickel, hard chrome or tin plating; passivate or lacquer to limit tarnish.
Can C82600-TF00 be formed, bent or molded?
Supplied as sand, investment or permanent-mould castings; the aged material is essentially non-formable, so shape must come from the casting plus machining.
What is the maximum service temperature of C82600-TF00?
C82600-TF00 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 C82600-TF00 and C82600-TB00?
TF00 is the default condition — standard supply condition for mould inserts, bushings and non-sparking tools: maximum hardness and strength with ~20 % IACS conductivity. TB00: soft, tough condition (≈790–800 °C solutionise + quench) used for straightening, heavy machining or welding before precipitation ageing. Yield strength is 1,035 MPa in TF00 versus 240 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)
- Copper Alloy C82600 alloy data sheet — 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)
- Cast copper-beryllium mould alloy datasheets (Materion / NGK class products) — producer (2023)
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.