Copper Alloy C66200-H06
Supply condition
UNS C66200 · ASTM B591
H06 = extra hard
Pick for flat parts requiring maximum strength with essentially no forming.
Values for the H06 condition
Other C66200 tempers and conditions
C66200 is listed in 8 conditions; see the grade overview at C66200.
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 |
H06This page 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-H06?
C66200-H06 is C66200 supplied in the H06 condition — pick for flat parts requiring maximum strength with essentially no forming. C66200-H06 has a yield strength of 545 MPa (79 ksi) and a tensile strength of 615 MPa (89.2 ksi) — stronger than 92% of copper alloy grades. Elongation at break is 4% and the elastic modulus is 115 GPa (16.7 Msi). C66200-H06 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). HR02 is the default condition FabDigit quotes; H06 is available on request or by drawing note.
Advantages
- High strength — 545 MPa (79 ksi), better than 92% of copper alloy grades
Limitations
- Limited ductility — 4%, worse than 96% of copper alloy grades
- Limited service temperature — 160°C (320 °F), worse than 92% of copper alloy grades
C66200-H06 properties
Typical room-temperature values for C66200-H06; 20 are specific to this condition. Other listed values are C66200 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C66200-H06 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-H06 has a yield strength of 545 MPa (79 ksi) and a tensile strength of 615 MPa (89.2 ksi) — stronger than 92% of copper alloy grades. Elongation at break is 4% and the elastic modulus is 115 GPa (16.7 Msi).
Thermal6
C66200-H06 is rated for continuous service to 160°C (320 °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-H06 conducts electricity at 14 % IACS, worse than 56% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (56/100), worse than 81% of copper alloy grades.
Sustainability4
Producing a kilogram of C66200-H06 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-H06's machinability is fair (35/100, better than 51% of copper alloy grades); weldability fair (50/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C66200-H06
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.
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.
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 | — |
C66200-H06 — frequently asked
What is C66200-H06 used for?
C66200-H06 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-H06?
C66200-H06 has a typical yield strength of 545 MPa (79 ksi) and a tensile strength of 615 MPa (89.2 ksi) — stronger than 92% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C66200-H06 easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% 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-H06 be welded?
With care — weldability is rated fair (50/100). 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-H06?
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-H06 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-H06?
C66200-H06 is rated for continuous use to about 160°C (320 °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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.