Copper Alloy C63280
UNS C63280 · ASTM B150
C63280 is a higher-strength nickel-aluminum bronze in the same ASTM B150 family as C63200, available in M30, HR50, TQ50, TF00 and O60 conditions.
Reference datasheet — C63280 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 M30 condition
C63280 tempers and conditions
C63280 is supplied in 5 conditions, soft to hard. M30 is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Soft condition for maximum ductility before forming or as a stress-relieved state after welding. | 350 | 700 | 20 | 11 HRC | 7.5 % IACS |
M30Default As hot extruded | Standard stock condition for rod, bar and shapes; best balance of strength, ductility and price. | 470 | 790 | 15 | 21 HRC | 7 % IACS |
Hot rolled and cold drawn | Choose for tighter dimensional tolerance and slightly higher yield in small-diameter bar. | 520 | 815 | 12 | 22 HRC | 7 % IACS |
Quenched and tempered | Use where maximum strength and hardness with uniform section properties are required in heavy bar and forgings. | 550 | 830 | 12 | 24 HRC | 6.5 % IACS |
Solution heat treated and precipitation hardened | Highest strength condition, specified for heavily loaded shafts and fasteners where κ-phase distribution is controlled. | 580 | 855 | 10 | 26 HRC | 6.5 % IACS |
What is C63280?
C63280 is a higher-strength nickel-aluminum bronze in the same ASTM B150 family as C63200, available in M30, HR50, TQ50, TF00 and O60 conditions. It delivers 470 MPa yield, 790 MPa tensile, 15 % elongation and 225 HB (21 HRC), so it is used where maximum load capacity must be combined with seawater corrosion resistance. Electrical conductivity is 7 % IACS, cold forming is restricted to gentle bends, and machining behaves like a tough duplex alloy. Step down to C63200 for easier forming and welding, or up to C63020 for higher strength. C63280 has a density of 7.58 g/cm³ (0.274 lb/in³), lighter than 94% of copper alloy grades. It melts at 1,040°C (1,904 °F). C63280 has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 790 MPa (115 ksi) — stronger than 87% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 117 GPa (17 Msi).
What is C63280 used for?
- propeller shafts
- landing gear components
- high-load marine fasteners
Advantages
- Good corrosion resistance — 82/100, better than 98% of copper alloy grades
- Lightweight — 7.58 g/cm³ (0.274 lb/in³), better than 94% of copper alloy grades
- High strength — 470 MPa (68.2 ksi), better than 87% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Readily welded — 70/100, better than 85% of copper alloy grades
Limitations
- Low electrical conductivity — 7 % IACS, worse than 86% of copper alloy grades
- Poor heat conductor — 38 W/m·K (22 BTU/hr·ft·°F), worse than 84% of copper alloy grades
- High embodied carbon — 4.5 kg CO₂/kg, worse than 79% of copper alloy grades
C63280 properties
Typical room-temperature values for C63280-M30; bars are the position among copper alloy grades.
Physical3
C63280 has a density of 7.58 g/cm³ (0.274 lb/in³), lighter than 94% of copper alloy grades. It melts at 1,040°C (1,904 °F).
Mechanical17
C63280 has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 790 MPa (115 ksi) — stronger than 87% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C63280 is rated for continuous service to 300°C (572 °F). It conducts heat at 38 W/m·K (22 BTU/hr·ft·°F), worse than 84% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C63280 conducts electricity at 7 % IACS, worse than 86% 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 C63280 takes about 65 MJ of energy and emits 4.5 kg of CO₂ — more than 81% of copper alloy grades. Typical recycled content is 30%.
Manufacturability7
C63280's machinability is poor (30/100, worse than 67% of copper alloy grades); weldability very good (70/100); formability poor (30/100).
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. C63280 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C63280
Is C63280 easy to machine?
Machines like a tough duplex alloy — rigid setup, sharp positive-rake carbide, moderate speed (50–90 m/min) with generous coolant; avoid dwelling to prevent work hardening.
Can C63280 be welded?
GTAW/GMAW readily with ERCuNiAl-A2/B3 filler under argon; preheat 150–200 °C for heavy sections, clean the oxide film before each pass and avoid excessive heat input.
Can C63280 be formed, bent or molded?
Hot work at 800–900 °C; cold forming is limited to gentle bends — anneal at 620–670 °C and slow-cool for any severe cold work.
C63280 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 | 8.5 – 9.5 | 9 |
| NiNi ≥ Fe usually specified for dealloying resistance | 4 – 5.5 | 4.8 |
| Fe | 4 – 5 | 4.5 |
| Mn | 1.2 – 2 | 1.5 |
| Si | ≤ 0.1 | |
| Zn | ≤ 0.3 | |
| Sn | ≤ 0.2 | |
| Pb | ≤ 0.02 | |
| Curemainder, ~74.5 % min | balance |
What surface finishes work on C63280?
Not anodizable; pickle in sulphuric/nitric to remove the alumina film, then polish, or apply epoxy/antifouling coatings for immersed service — no plating usually needed.
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 C63280 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B150
How much does C63280 cost?
C63280 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.
C63280 — frequently asked
What is C63280 used for?
C63280 is typically used for propeller shafts, landing gear components and high-load marine fasteners. In short: stronger than C63200; shaft-grade nickel-aluminum bronze; limited cold formability.
What is the yield strength of C63280?
C63280 has a typical yield strength of 470 MPa (68.2 ksi) and a tensile strength of 790 MPa (115 ksi) — stronger than 87% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is C63280 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 67% of copper alloy grades). Machines like a tough duplex alloy — rigid setup, sharp positive-rake carbide, moderate speed (50–90 m/min) with generous coolant; avoid dwelling to prevent work hardening.
Can C63280 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW readily with ERCuNiAl-A2/B3 filler under argon; preheat 150–200 °C for heavy sections, clean the oxide film before each pass and avoid excessive heat input.
What surface finishes work on C63280?
Not anodizable; pickle in sulphuric/nitric to remove the alumina film, then polish, or apply epoxy/antifouling coatings for immersed service — no plating usually needed.
Can C63280 be formed, bent or molded?
Hot work at 800–900 °C; cold forming is limited to gentle bends — anneal at 620–670 °C and slow-cool for any severe cold work.
What is the maximum service temperature of C63280?
C63280 is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C63280-M30 and C63280-O60?
M30 is the default condition — standard stock condition for rod, bar and shapes; best balance of strength, ductility and price. O60: soft condition for maximum ductility before forming or as a stress-relieved state after welding. Yield strength is 470 MPa in M30 versus 350 MPa in O60.
How much does C63280 cost?
C63280 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 B150/B150M — Aluminum Bronze Rod, Bar, and Shapes — ASTM International (2019)
- CDA UNS Alloy Database (C632xx nickel-aluminum bronzes) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties of Nonferrous Alloys — ASM International (1990)
- Nickel Aluminium Bronze alloy datasheets — Nickel Institute / Aviva Metals / Columbia Metals (2021)
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.