Copper Alloy C66200
UNS C66200 · ASTM B591
C66200 is a wrought copper-zinc brass with a modest nickel addition that raises strength and corrosion resistance over plain brass, covered by ASTM B591 and supplied as strip and sheet in O60 through H08 tempers.
Reference datasheet — C66200 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 HR02 condition
C66200 tempers and conditions
C66200 is supplied in 8 conditions, soft to hard. HR02 is the default FabDigit quotes; the values on this page are for it.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Pick for deep drawing, severe bending and forming before final work-hardening. | 140 | 360 | 48 | 85 HB | 15 % IACS |
Quarter hard | Pick when moderate forming must be combined with a useful strength increase over annealed. | 290 | 420 | 25 | 120 HB | 14 % IACS |
Half hard | General-purpose cold-rolled strip temper balancing strength and bend performance. | 385 | 485 | 12 | 142 HB | — |
HR02Default Half hard, cold rolled and stress relieved | Default stocked strip temper: half-hard strength with a stress-relief bake to raise elastic limit and resist ammonia stress-corrosion cracking. | 400 | 490 | 10 | 145 HB | 14 % IACS |
Full hard | Pick for flat springs, contacts and stampings needing high strength with only gentle forming. | 480 | 560 | 6 | 165 HB | — |
Hard, cold rolled and stress relieved | Highest routinely stocked strip temper for springy contacts; stress relief raises the elastic limit and reduces SCC sensitivity. | 500 | 570 | 5 | 172 HB | 14 % IACS |
Extra hard | Pick for flat parts requiring maximum strength with essentially no forming. | 545 | 615 | 4 | 183 HB | 14 % IACS |
Spring hard | Pick for spring contacts and clips where the highest elastic limit in thin strip is required. | 595 | 655 | 3 | 196 HB | 14 % IACS |
What is C66200?
C66200 is a wrought copper-zinc brass with a modest nickel addition that raises strength and corrosion resistance over plain brass, covered by ASTM B591 and supplied as strip and sheet in O60 through H08 tempers. Engineers use it for stamped and drawn hardware and connector parts needing 400 MPa yield, 490 MPa tensile, 10 % elongation and 145 HB (78 HRB). It is unleaded, so machinability is only about 32 % of free-cutting brass; electrical conductivity is 14 % IACS and service is limited to 180 °C. Where deep forming matters more than strength, C26000 cartridge brass is the simpler choice. C66200 has a density of 8.53 g/cm³ (0.308 lb/in³), lighter than 62% of copper alloy grades. It melts at 900°C (1,652 °F). C66200 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 490 MPa (71.1 ksi) — stronger than 80% of copper alloy grades. Elongation at break is 10% and the elastic modulus is 115 GPa (16.7 Msi).
What is C66200 used for?
- architectural hardware
- electrical connectors
- decorative trim
Advantages
- High strength — 400 MPa (58 ksi), better than 80% of copper alloy grades
Limitations
- Limited ductility — 10%, worse than 76% of copper alloy grades
C66200 properties
Typical room-temperature values for C66200-HR02; bars are the position among copper alloy grades.
Physical3
C66200 has a density of 8.53 g/cm³ (0.308 lb/in³), lighter than 62% of copper alloy grades. It melts at 900°C (1,652 °F).
Mechanical12
C66200 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 490 MPa (71.1 ksi) — stronger than 80% of copper alloy grades. Elongation at break is 10% and the elastic modulus is 115 GPa (16.7 Msi).
Thermal6
C66200 is rated for continuous service to 180°C (356 °F). It conducts heat at 60 W/m·K (34.7 BTU/hr·ft·°F), worse than 59% of copper alloy grades. Thermal expansion is 19.5 µm/m·K (10.8 µin/in·°F).
Electrical3
C66200 conducts electricity at 14 % IACS, worse than 56% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 68% of copper alloy grades.
Sustainability4
Producing a kilogram of C66200 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 40%.
Manufacturability7
C66200's machinability is poor (32/100, worse than 57% of copper alloy grades); weldability good (55/100); formability good (55/100).
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. C66200 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C66200
Is C66200 easy to machine?
Unleaded brass — gummy, long chips; use sharp positive-rake tools, high speed and good lubrication; roughly 30 % of AISI 1212.
Can C66200 be welded?
Resistance and brazing/soldering are preferred; fusion welding risks zinc fuming and porosity, use silicon-bronze filler with local exhaust.
Can C66200 be formed, bent or molded?
Excellent deep drawing and bending in O60/H01; in HR02/HR04 keep bend radii ≥1–2t and bend across the rolling direction.
C66200 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 |
|---|---|---|
| Cuvalue recalled from CDA/ASTM B591 listing — verify against current standard | 86 – 89 | 87.5 |
| Ninickel addition for strength and dezincification resistance | 1.5 – 2 | 1.8 |
| Fe | ≤ 0.05 | |
| Pb | ≤ 0.05 | |
| Znremainder, nominally ~10–12 % | balance |
What surface finishes work on C66200?
Polishes to a bright warm-yellow finish; readily nickel-, tin-, silver- or chrome-plated; use clear lacquer or benzotriazole passivation to prevent tarnish. Not anodizable.
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 C66200 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B591
How much does C66200 cost?
C66200 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.
C66200 — frequently asked
What is C66200 used for?
C66200 is typically used for architectural hardware, electrical connectors and decorative trim. In short: nickel-strengthened forming brass; better corrosion than plain brass; strip and sheet grade.
What is the yield strength of C66200?
C66200 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 490 MPa (71.1 ksi) — stronger than 80% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C66200 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 57% of copper alloy grades). Unleaded brass — gummy, long chips; use sharp positive-rake tools, high speed and good lubrication; roughly 30 % of AISI 1212.
Can C66200 be welded?
Yes — weldability is rated good (55/100). Resistance and brazing/soldering are preferred; fusion welding risks zinc fuming and porosity, use silicon-bronze filler with local exhaust.
What surface finishes work on C66200?
Polishes to a bright warm-yellow finish; readily nickel-, tin-, silver- or chrome-plated; use clear lacquer or benzotriazole passivation to prevent tarnish. Not anodizable.
Can C66200 be formed, bent or molded?
Excellent deep drawing and bending in O60/H01; in HR02/HR04 keep bend radii ≥1–2t and bend across the rolling direction.
What is the maximum service temperature of C66200?
C66200 is rated for continuous use to about 180°C (356 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C66200-HR02 and C66200-O60?
HR02 is the default condition — default stocked strip temper: half-hard strength with a stress-relief bake to raise elastic limit and resist ammonia stress-corrosion cracking. O60: pick for deep drawing, severe bending and forming before final work-hardening. Yield strength is 400 MPa in HR02 versus 140 MPa in O60.
How much does C66200 cost?
C66200 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 B591 — Copper-Zinc-Tin Alloy Plate, Sheet, Strip and Rolled Bar — ASTM International (2022)
- ASTM B601 — Temper Designations for Copper and Copper Alloys — ASTM International (2019)
- CDA UNS alloy datasheets (copper.org) — Copper Development Association (2024)
- 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; 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.