Copper Alloy C61500-H06
Supply condition
UNS C61500
H06 = extra hard
Use where near-maximum strength and stiffness in thin gauge are needed and forming is limited to flat blanking or slight bends with grain.
Values for the H06 condition
Other C61500 tempers and conditions
C61500 is listed in 6 conditions; see the grade overview at C61500.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
O60Default Soft annealed | Choose for deep drawing, severe bending and forming, or when maximum ductility and toughness are needed before final heat/work hardening. | 215 | 500 | 50 | 130 HB | 10.5 % IACS |
Light annealed | Choose when moderate forming ability must be combined with somewhat higher strength and better flatness than a full anneal. | 290 | 550 | 35 | 155 HB | 10.5 % IACS |
Half hard | General-purpose cold-rolled temper: good strength with enough ductility for moderate bends and light forming. | 480 | 620 | 12 | 180 HB | 10 % IACS |
Full hard | Pick for high-strength flat parts, washers, bushing stock and wear surfaces where only gentle forming is required. | 585 | 690 | 6 | 205 HB | 10 % IACS |
H06This page Extra hard | Use where near-maximum strength and stiffness in thin gauge are needed and forming is limited to flat blanking or slight bends with grain. | 640 | 725 | 4 | 220 HB | 10 % IACS |
Spring hard | Spring, diaphragm and contact stock: highest strength and elastic limit of the flat-rolled tempers, with minimal formability. | 690 | 760 | 3 | 235 HB | 10 % IACS |
What is C61500-H06?
C61500-H06 is C61500 supplied in the H06 condition — use where near-maximum strength and stiffness in thin gauge are needed and forming is limited to flat blanking or slight bends with grain. C61500-H06 has a yield strength of 640 MPa (92.8 ksi) and a tensile strength of 725 MPa (105 ksi) — stronger than 95% of copper alloy grades. Elongation at break is 4% and the elastic modulus is 117 GPa (17 Msi). C61500-H06 has a density of 7.72 g/cm³ (0.279 lb/in³), lighter than 89% of copper alloy grades. It melts at 1,045°C (1,913 °F). O60 is the default condition FabDigit quotes; H06 is available on request or by drawing note.
Advantages
- Good corrosion resistance — 82/100, better than 98% of copper alloy grades
- High strength — 640 MPa (92.8 ksi), better than 95% of copper alloy grades
Limitations
- Limited ductility — 4%, worse than 96% of copper alloy grades
- Poor heat conductor — 45 W/m·K (26 BTU/hr·ft·°F), worse than 76% of copper alloy grades
C61500-H06 properties
Typical room-temperature values for C61500-H06; 11 are specific to this condition. Other listed values are C61500 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C61500-H06 has a density of 7.72 g/cm³ (0.279 lb/in³), lighter than 89% of copper alloy grades. It melts at 1,045°C (1,913 °F).
Mechanical14
C61500-H06 has a yield strength of 640 MPa (92.8 ksi) and a tensile strength of 725 MPa (105 ksi) — stronger than 95% of copper alloy grades. Elongation at break is 4% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C61500-H06 is rated for continuous service to 190°C (374 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), worse than 76% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C61500-H06 conducts electricity at 10 % IACS, worse than 74% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (82/100), better than 98% of copper alloy grades.
Sustainability4
Producing a kilogram of C61500-H06 takes about 57 MJ of energy and emits 3.6 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 30%.
Manufacturability8
C61500-H06's machinability is fair (37/100, better than 55% 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 C61500-H06
Is C61500 easy to machine?
Tough, work-hardening chips: use rigid setups, positive-rake carbide, moderate speed with heavy feed and generous flood coolant; avoid dwelling to prevent glazing.
Can C61500 be welded?
GTAW/GMAW with matching aluminium-bronze filler (ERCuAl-A2) works well; remove alumina film mechanically or with AC/He shielding, keep interpass temperature low and expect loss of cold-worked strength in the HAZ.
Can C61500 be formed, bent or molded?
Form in O60/O50 tempers — deep drawing and severe bends are practical; hard tempers should only be blanked or bent gently with the grain, with interstage annealing at 600–700 °C followed by rapid cooling.
What surface finishes work on C61500?
Not anodisable; polishes to a rich golden lustre, accepts nickel/chrome or tin plating after thorough oxide removal (alkaline clean + acid activation), and self-passivates in service to a stable brown-olive film.
C61500 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 |
|---|---|---|
| Al | 7.7 – 8.3 | 8 |
| Niraises strength and dealuminification resistance | 1.8 – 2.2 | 2 |
| Curemainder, Cu + named elements ≥ 99.5 % | ≥ 89 (balance) | — |
C61500-H06 — frequently asked
What is C61500-H06 used for?
C61500-H06 is typically used for valve components, marine fasteners and pump shafts. In short: nickel-strengthened aluminum bronze; formable and corrosion resistant; 400 °C service capability.
What is the yield strength of C61500-H06?
C61500-H06 has a typical yield strength of 640 MPa (92.8 ksi) and a tensile strength of 725 MPa (105 ksi) — stronger than 95% of copper alloy grades. Strength varies by condition: see the 6 listed tempers.
Is C61500-H06 easy to machine?
Not especially — machinability is rated fair (37/100, better than 55% of copper alloy grades). Tough, work-hardening chips: use rigid setups, positive-rake carbide, moderate speed with heavy feed and generous flood coolant; avoid dwelling to prevent glazing.
Can C61500-H06 be welded?
With care — weldability is rated fair (50/100). GTAW/GMAW with matching aluminium-bronze filler (ERCuAl-A2) works well; remove alumina film mechanically or with AC/He shielding, keep interpass temperature low and expect loss of cold-worked strength in the HAZ.
What surface finishes work on C61500-H06?
Not anodisable; polishes to a rich golden lustre, accepts nickel/chrome or tin plating after thorough oxide removal (alkaline clean + acid activation), and self-passivates in service to a stable brown-olive film.
Can C61500-H06 be formed, bent or molded?
Form in O60/O50 tempers — deep drawing and severe bends are practical; hard tempers should only be blanked or bent gently with the grain, with interstage annealing at 600–700 °C followed by rapid cooling.
What is the maximum service temperature of C61500-H06?
C61500-H06 is rated for continuous use to about 190°C (374 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C61500-O60 and C61500-H08?
O60 is the default condition — choose for deep drawing, severe bending and forming, or when maximum ductility and toughness are needed before final heat/work hardening. H08: spring, diaphragm and contact stock: highest strength and elastic limit of the flat-rolled tempers, with minimal formability. Yield strength is 215 MPa in O60 versus 690 MPa in H08.
Sources
- C61500 alloy data (Copper Development Association alloy database) — CDA / copper.org (2023)
- ASTM B169 – Copper-Aluminum Alloy Plate, Sheet, Strip and Rolled Bar — ASTM International (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (copper alloys in seawater) — 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.