Copper Alloy C63000
UNS C63000 · ASTM B150 · EN CW307G, CuAl10Ni5Fe4 · GB QAl10-4-4
C63000 is a wrought nickel-aluminium bronze with roughly 10% Al, 5% Ni and 3% Fe, supplied as hot-extruded or hot-rolled bar, forgings and flanges to ASTM B150 and CW307G.
Values for the HR50 condition
C63000 tempers and conditions
C63000 is supplied in 8 conditions, soft to hard. HR50 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 | Softened condition (slow-cooled anneal) used for maximum ductility before further hot/cold forming or machining of complex parts. | 310 | 655 | 25 | 150 HB | 7.2 % IACS |
Hot rolled and annealed | Hot-rolled plate/bar fully annealed for maximum ductility and lowest residual stress at somewhat reduced strength. | 325 | 655 | 20 | 170 HB | 7 % IACS |
Hot Extruded and Temper Annealed | Extruded nickel-aluminium bronze given a temper (sub-critical) anneal to stabilise the structure and relieve residual stress with only slight strength loss. | 340 | 670 | 18 | 180 HB | 7 % IACS |
As hot extruded | Cheapest as-supplied condition for large sections and forging stock where only nominal strength is required. | 345 | 690 | 20 | 170 HB | 7 % IACS |
As hot forged and air cooled | Nickel-aluminium bronze forged to shape and air cooled from the hot-working temperature; retains a fine worked structure with high strength and good toughness. | 380 | 690 | 13 | 197 HB | 7 % IACS |
HR50Default Hot rolled / hot finished to specified hardness | Standard stocked condition for ASTM B150 / AMS 4640 nickel-aluminium bronze rod, bar and shapes for marine shafting and valve stems. | 415 | 760 | 15 | 197 HB | 7 % IACS |
Quench hardened and temper annealed | Choose when maximum and most uniform strength/hardness through heavy sections is needed (heavy forgings, landing-gear bushings, high-load stems). | 485 | 825 | 12 | 212 HB | — |
Full hard | Small-diameter cold-drawn rod and wire where higher yield strength and better surface/straightness are wanted; ductility is reduced. | 550 | 830 | 10 | 19 HRC | 6.5 % IACS |
What is C63000?
C63000 is a wrought nickel-aluminium bronze with roughly 10% Al, 5% Ni and 3% Fe, supplied as hot-extruded or hot-rolled bar, forgings and flanges to ASTM B150 and CW307G. It combines high strength (tensile 700-850 MPa, 415 MPa yield), seawater and cavitation-erosion resistance and non-magnetic, non-sparking behaviour for marine shafting, valve stems, pump sleeves, fasteners and landing-gear bushings. Limits are poor cold formability, low electrical and thermal conductivity (7% IACS), fair machinability (about 30% of free-cutting brass) and possible selective dealuminification in hot or sulphide-polluted stagnant seawater. C63000 has a density of 7.58 g/cm³ (0.274 lb/in³), lighter than 94% of copper alloy grades. It melts at 1,043°C (1,909 °F). C63000 has a yield strength of 415 MPa (60.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 82% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 117 GPa (17 Msi).
What is C63000 used for?
- Marine propeller shafting
- Valve stems
- Pump sleeves and bushings
- Aircraft landing-gear bushings
- Aircraft bearings
- Heavy-duty gears
- High-strength fasteners
- Forged flanges
Advantages
- Lightweight — 7.58 g/cm³ (0.274 lb/in³), better than 94% of copper alloy grades
- Good corrosion resistance — 78/100, better than 94% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- High strength — 415 MPa (60.2 ksi), better than 82% of copper alloy grades
- Readily welded — 65/100, better than 80% of copper alloy grades
Limitations
- Low electrical conductivity — 7 % IACS, worse than 86% of copper alloy grades
- Poor heat conductor — 38.9 W/m·K (22.5 BTU/hr·ft·°F), worse than 83% of copper alloy grades
C63000 properties
Typical room-temperature values for C63000-HR50; bars are the position among copper alloy grades.
Physical3
C63000 has a density of 7.58 g/cm³ (0.274 lb/in³), lighter than 94% of copper alloy grades. It melts at 1,043°C (1,909 °F).
Mechanical14
C63000 has a yield strength of 415 MPa (60.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 82% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C63000 is rated for continuous service to 300°C (572 °F). It conducts heat at 38.9 W/m·K (22.5 BTU/hr·ft·°F), worse than 83% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C63000 conducts electricity at 7 % IACS, worse than 86% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of copper alloy grades.
Sustainability4
Producing a kilogram of C63000 takes about 62 MJ of energy and emits 3.9 kg of CO₂ — more than 76% of copper alloy grades. Typical recycled content is 30%.
Manufacturability7
C63000's machinability is poor (30/100, worse than 67% of copper alloy grades); weldability good (65/100); formability poor (25/100).
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. C63000 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C63000
Is C63000 easy to machine?
Machines like a tough duplex material: rigid setups, sharp carbide with positive rake, 60–120 m/min, heavy feed and flood coolant to avoid work hardening and gummy chips (rating ≈30% of free-cutting brass).
Can C63000 be welded?
GTAW/GMAW with matching C63000/NAB filler works well; preheat 150–250 °C for heavy sections, avoid excessive heat input and interpass oxide entrapment, no post-weld quench required.
Can C63000 be formed, bent or molded?
Hot work 700–900 °C (excellent forgeability); cold forming is poor — limit to gentle bends with generous radii and interstage annealing.
Manufacturability
The process limits FabDigit applies to C63000. Every C63000 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
CNC machining
| Machinability | Fair30 / 100 |
|---|---|
| ISO material group | N.5 |
| Cutting speed (rough / finish) | 180 / 220 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 6× diameter |
| Best surface (machined / polished) | Ra 1.6 / — |
| Hardenable after machining | No |
Sheet metal
| Formability | Fair25 / 100 |
|---|---|
| Weldability | Better65 / 100 |
| Bendable | Yes |
C63000 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 | 9 – 11 | 10 |
| NiNi + Co | 4 – 5.5 | 4.8 |
| Fe | 2 – 4 | 3 |
| Mn | ≤ 1.5 | 0.8 |
| Si | ≤ 0.25 | |
| Zn | ≤ 0.3 | |
| Sn | ≤ 0.2 | |
| Pb | ≤ 0.02 | |
| Curemainder, 78% min | ≥ 78 (balance) |
What surface finishes work on C63000?
Not anodisable; use fine polishing, shot blasting or chemical patination, and avoid electroplating unless a nickel strike is applied over the Al-oxide film.
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).
Passivation
Plating
Organic Coating
Equivalent designations
Standards and trade names that resolve to Copper Alloy C63000 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B150
- EN / DIN / Werkstoff-Nr.
- CW307GCuAl10Ni5Fe4
- GB (China)
- QAl10-4-4
How much does C63000 cost?
C63000 is a specialty-cost copper alloy ($$$$$), pricier than about 59% 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.
C63000 — frequently asked
What is C63000 used for?
C63000 is typically used for marine propeller shafting, valve stems, pump sleeves and bushings, aircraft landing-gear bushings, aircraft bearings and heavy-duty gears. In short: extremely tough bronze.
What is the yield strength of C63000?
C63000 has a typical yield strength of 415 MPa (60.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 82% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C63000 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 67% of copper alloy grades). Machines like a tough duplex material: rigid setups, sharp carbide with positive rake, 60–120 m/min, heavy feed and flood coolant to avoid work hardening and gummy chips (rating ≈30% of free-cutting brass).
Can C63000 be welded?
Yes — weldability is rated good (65/100). GTAW/GMAW with matching C63000/NAB filler works well; preheat 150–250 °C for heavy sections, avoid excessive heat input and interpass oxide entrapment, no post-weld quench required.
What surface finishes work on C63000?
Not anodisable; use fine polishing, shot blasting or chemical patination, and avoid electroplating unless a nickel strike is applied over the Al-oxide film.
Can C63000 be formed, bent or molded?
Hot work 700–900 °C (excellent forgeability); cold forming is poor — limit to gentle bends with generous radii and interstage annealing.
What is the maximum service temperature of C63000?
C63000 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 C63000-HR50 and C63000-H04?
HR50 is the default condition — standard stocked condition for ASTM B150 / AMS 4640 nickel-aluminium bronze rod, bar and shapes for marine shafting and valve stems. H04: small-diameter cold-drawn rod and wire where higher yield strength and better surface/straightness are wanted; ductility is reduced. Yield strength is 415 MPa in HR50 versus 550 MPa in H04.
How much does C63000 cost?
C63000 is a specialty-cost copper alloy ($$$$$), pricier than about 59% 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.
Can FabDigit make parts in C63000?
Yes — C63000 is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B150/B150M — Aluminum Bronze Rod, Bar and Shapes — ASTM (2019)
- AMS 4640 — Nickel-Aluminum Bronze Bar, Rod, Shapes, Forgings — SAE International (2018)
- ASTM B601 — Temper Designations for Copper and Copper Alloys — ASTM (2019)
- CDA Alloy Datasheet C63000 (copper.org) — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties of Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13C — Corrosion: Environments and Industries — ASM International (2006)
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.