Copper Alloy C82600
UNS C82600 · ASTM B824
C82600 is a cast beryllium copper in the high-copper C80000–C82999 family, covered by ASTM B824 as Alloy 245C and strengthened by beryllium precipitation during age hardening.
Reference datasheet — C82600 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the TF00 condition
C82600 tempers and conditions
C82600 is supplied in 4 conditions, soft to hard. TF00 is the default FabDigit quotes; the values on this page are for it.
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 |
TF00Default 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?
C82600 is a cast beryllium copper in the high-copper C80000–C82999 family, covered by ASTM B824 as Alloy 245C and strengthened by beryllium precipitation during age hardening. In the aged condition it reaches 1035 MPa yield, 1140 MPa tensile and 400 HB (43 HRC) while still conducting 105 W/m·K, which is why it is specified for mould inserts and bearings that must carry load and pull heat out of the part. It is supplied as sand, investment and permanent-mould castings, with conditions M, M01, TB00 and TF00 on file. Elongation is about 1 %, maximum service temperature is 200 °C, electrical conductivity is 20 % IACS, and beryllium-bearing dust requires wet cutting and extraction; C82500 is the lower-strength, more forgiving alternative. C82600 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). C82600 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).
What is C82600 used for?
- mold and die inserts
- wear-resistant bearings
- non-sparking tool castings
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 properties
Typical room-temperature values for C82600-TF00; bars are the position among copper alloy grades.
Physical3
C82600 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 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 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 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 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'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. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. C82600 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C82600
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.
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 |
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.
Surface treatments FabDigit runs on copper alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Equivalent designations
Standards and trade names that resolve to Copper Alloy C82600 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B824
- Trade names
- Alloy 245C
How much does C82600 cost?
C82600 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
C82600 — frequently asked
What is C82600 used for?
C82600 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?
C82600 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 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 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?
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 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?
C82600 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.
How much does C82600 cost?
C82600 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
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; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.