Copper Alloy C82100 TF00-AC
Precip hard
UNS C82100 · ASTM B824
Economical route for thick or complex castings where quench distortion must be avoided; strength somewhat below full TF00.
Values for the TF00-AC condition
Other C82100 tempers and conditions
C82100 is listed in 4 conditions; see the grade overview at C82100.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution heat treated | Softest, most ductile condition; choose for rough machining, straightening or forming before ageing. | 140 | 310 | 25 | 80 HB | 19 % IACS |
As centrifugally cast | Raw casting condition; used only as a starting stock for heat treatment or for low-stress parts. | 185 | 345 | 20 | 90 HB | 22 % IACS |
TF00-ACThis page TF00 | Economical route for thick or complex castings where quench distortion must be avoided; strength somewhat below full TF00. | 415 | 550 | 8 | 10 HRC | 42 % IACS |
TF00Default Solution heat treated and precipitation hardened | Standard supply condition: peak strength and hardness with ~45 % IACS conductivity for electrodes, dies and structural castings. | 515 | 655 | 6 | 20 HRC | 45 % IACS |
What is C82100 TF00-AC?
C82100 TF00-AC is C82100 in the TF00-AC condition — economical route for thick or complex castings where quench distortion must be avoided; strength somewhat below full TF00. C82100 TF00-AC has a yield strength of 415 MPa (60.2 ksi) and a tensile strength of 550 MPa (79.8 ksi) — stronger than 82% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 131 GPa (19 Msi). C82100 TF00-AC has a density of 8.75 g/cm³ (0.316 lb/in³), lighter than 51% of copper alloy grades. It melts at 1,030°C (1,886 °F). TF00 is the default condition FabDigit quotes; TF00-AC is available on request or by drawing note.
Advantages
- Stiff — 131 GPa (19 Msi), better than 91% of copper alloy grades
- High strength — 415 MPa (60.2 ksi), better than 82% of copper alloy grades
- Conducts heat well — 195 W/m·K (112.7 BTU/hr·ft·°F), better than 77% of copper alloy grades
- High electrical conductivity — 42 % IACS, better than 75% of copper alloy grades
Limitations
- High embodied carbon — 6.5 kg CO₂/kg, worse than 94% of copper alloy grades
- Limited ductility — 8%, worse than 83% of copper alloy grades
- Limited formability — 18/100, worse than 75% of copper alloy grades
C82100 TF00-AC properties
Typical room-temperature values for C82100 TF00-AC; 21 are specific to this condition. Other listed values are C82100 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C82100 TF00-AC has a density of 8.75 g/cm³ (0.316 lb/in³), lighter than 51% of copper alloy grades. It melts at 1,030°C (1,886 °F).
Mechanical14
C82100 TF00-AC has a yield strength of 415 MPa (60.2 ksi) and a tensile strength of 550 MPa (79.8 ksi) — stronger than 82% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 131 GPa (19 Msi).
Thermal6
C82100 TF00-AC is rated for continuous service to 200°C (392 °F). It conducts heat at 195 W/m·K (112.7 BTU/hr·ft·°F), better than 77% of copper alloy grades. Thermal expansion is 17.8 µm/m·K (9.89 µin/in·°F).
Electrical3
C82100 TF00-AC conducts electricity at 42 % IACS, better than 75% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 58% of copper alloy grades.
Sustainability4
Producing a kilogram of C82100 TF00-AC 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
C82100 TF00-AC's machinability is fair (38/100, better than 55% of copper alloy grades); weldability fair (45/100); formability poor (18/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C82100 TF00-AC
Is C82100 easy to machine?
Machine in TB00 where possible; in TF00 use sharp carbide tooling, rigid setups, flood coolant and HEPA-filtered wet collection to control beryllium-bearing dust.
Can C82100 be welded?
GTAW/EBW/resistance welding are feasible with matching BeCu filler; re-solution treat and age after welding, and provide local fume extraction for Be.
Can C82100 be formed, bent or molded?
Sand, permanent-mould, investment and centrifugal casting all work well; feed heavily with risers and chills because of the wide freezing range and high thermal conductivity.
What surface finishes work on C82100?
Not anodizable — takes electroless/electrolytic Ni, Ag or Cr plating, chemical blackening and a high mechanical polish for mould inserts.
C82100 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 |
|---|---|---|
| Beprecipitation hardening element | 0.4 – 0.8 | 0.6 |
| Cograin refiner / co-precipitate; Co+Ni may be counted together | 2.35 – 2.7 | 2.5 |
| Nimay substitute part of Co | ≤ 0.3 | — |
| Sideoxidizer / fluidity | 0.1 – 0.25 | 0.15 |
| Feimpurity limit | ≤ 0.2 | — |
| Alimpurity limit | ≤ 0.1 | — |
| Pbimpurity limit | ≤ 0.02 | — |
| Curemainder, ~96.5 % | balance | — |
C82100 TF00-AC — frequently asked
What is C82100 TF00-AC used for?
C82100 TF00-AC is typically used for mold bases, high-strength bushings, aerospace fittings and non-sparking tools. In short: age-hardening cast BeCu; cobalt-refined cast grain; strength with 45% IACS.
What is the yield strength of C82100 TF00-AC?
C82100 TF00-AC has a typical yield strength of 415 MPa (60.2 ksi) and a tensile strength of 550 MPa (79.8 ksi) — stronger than 82% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C82100 TF00-AC easy to machine?
Not especially — machinability is rated fair (38/100, better than 55% of copper alloy grades). Machine in TB00 where possible; in TF00 use sharp carbide tooling, rigid setups, flood coolant and HEPA-filtered wet collection to control beryllium-bearing dust.
Can C82100 TF00-AC be welded?
With care — weldability is rated fair (45/100). GTAW/EBW/resistance welding are feasible with matching BeCu filler; re-solution treat and age after welding, and provide local fume extraction for Be.
What surface finishes work on C82100 TF00-AC?
Not anodizable — takes electroless/electrolytic Ni, Ag or Cr plating, chemical blackening and a high mechanical polish for mould inserts.
Can C82100 TF00-AC be formed, bent or molded?
Sand, permanent-mould, investment and centrifugal casting all work well; feed heavily with risers and chills because of the wide freezing range and high thermal conductivity.
What is the maximum service temperature of C82100 TF00-AC?
C82100 TF00-AC 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 C82100-TF00 and C82100-TB00?
TF00 is the default condition — standard supply condition: peak strength and hardness with ~45 % IACS conductivity for electrodes, dies and structural castings. TB00: softest, most ductile condition; choose for rough machining, straightening or forming before ageing. Yield strength is 515 MPa in TF00 versus 140 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 Copper Alloy Database — cast copper-beryllium alloys — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Cast copper-beryllium alloy property sheets — Materion (Brush Wellman) (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.