Copper Alloy C62580
UNS C62580 · ASTM B150
C62580 is a high-strength wrought aluminum bronze to ASTM B150, supplied as forged rod and bar for fasteners and aerospace hardware that must combine tensile strength with corrosion resistance.
Reference datasheet — C62580 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
C62580 tempers and conditions
C62580 is supplied in 4 conditions, soft to hard. M30 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Softest supply condition for easier machining or before a subsequent hardening cycle; strength and wear resistance are reduced. | 350 | 700 | 8 | 217 HB | — |
As forged and quenched | Closed-die or open-die forgings supplied without further heat treatment — used for high-strength fittings and fastener blanks. | 414 | 758 | 6 | 22 HRC | 7.5 % IACS |
M30Default As hot extruded | Standard stocked bar/rod condition: full hot-worked strength with the best elongation this alloy offers. | 427 | 772 | 5 | 22 HRC | 7.5 % IACS |
Quench hardened and temper annealed | Pick for maximum hardness and galling/wear resistance (dies, wear plates, guide blocks); ductility drops to ~2%. | 545 | 827 | 2 | 29 HRC | — |
What is C62580?
C62580 is a high-strength wrought aluminum bronze to ASTM B150, supplied as forged rod and bar for fasteners and aerospace hardware that must combine tensile strength with corrosion resistance. Typical properties are 772 MPa tensile strength, 427 MPa yield, 5 % elongation and 241 HB (22 HRC), with service to about 300 °C and a corrosion resistance score of 70. The trade-off is workability: machinability is rated 25 and formability 10, so parts are hot forged at 750–870 °C and cold bending is not viable. Electrical conductivity is only 7.5 % IACS; choose C62200 where more ductility and easier machining matter. C62580 has a density of 7.25 g/cm³ (0.262 lb/in³), lighter than 100% of copper alloy grades. It melts at 1,027°C (1,881 °F). C62580 has a yield strength of 427 MPa (61.9 ksi) and a tensile strength of 772 MPa (112 ksi) — stronger than 83% of copper alloy grades. Elongation at break is 5% and the elastic modulus is 110 GPa (16 Msi).
What is C62580 used for?
- aircraft fasteners
- high-strength bolts
- forged fittings
Advantages
- Lightweight — 7.25 g/cm³ (0.262 lb/in³), better than 100% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- High strength — 427 MPa (61.9 ksi), better than 83% of copper alloy grades
Limitations
- Limited ductility — 5%, worse than 93% of copper alloy grades
- Limited formability — 10/100, worse than 89% of copper alloy grades
- Difficult to machine — 25/100, worse than 86% of copper alloy grades
- Low electrical conductivity — 7.5 % IACS, worse than 84% of copper alloy grades
- Poor heat conductor — 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 80% of copper alloy grades
C62580 properties
Typical room-temperature values for C62580-M30; bars are the position among copper alloy grades.
Physical3
C62580 has a density of 7.25 g/cm³ (0.262 lb/in³), lighter than 100% of copper alloy grades. It melts at 1,027°C (1,881 °F).
Mechanical14
C62580 has a yield strength of 427 MPa (61.9 ksi) and a tensile strength of 772 MPa (112 ksi) — stronger than 83% of copper alloy grades. Elongation at break is 5% and the elastic modulus is 110 GPa (16 Msi).
Thermal6
C62580 is rated for continuous service to 300°C (572 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 80% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C62580 conducts electricity at 7.5 % IACS, worse than 84% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of C62580 takes about 58 MJ of energy and emits 3.8 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
C62580's machinability is poor (25/100, worse than 86% of copper alloy grades); weldability poor (30/100); formability not recommended (10/100).
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. C62580 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C62580
Is C62580 easy to machine?
Machine like a hard bronze: rigid setup, sharp carbide (K-grade) tools, 5–8° positive rake, 60–120 m/min, generous flood coolant; chips are short and abrasive — rating only about 20 % of free-cutting brass.
Can C62580 be welded?
GTAW/GMAW with matching Al-bronze filler (ERCuAl-A2/A3), preheat 150–250 °C, tight interpass control and slow cooling; high Al content makes it crack- and oxide-film sensitive, so post-weld temper anneal is recommended.
Can C62580 be formed, bent or molded?
Hot forge/extrude at roughly 750–870 °C; virtually no cold formability — bending or heading at room temperature will crack the eutectoid structure.
C62580 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 |
|---|---|---|
| Alhigh-aluminium (β-hardenable) range per ASTM B150; verify against mill certificate | 12 – 13 | 12.5 |
| Fegrain refiner / κ-phase former | 3 – 5 | 4 |
| Nimax, improves dealuminification resistance | ≤ 2 | 0.5 |
| Mn | ≤ 2 | 0.3 |
| Si | ≤ 0.1 | |
| Zn | ≤ 0.1 | |
| Sn | ≤ 0.2 | |
| Curemainder, approx. 81–84 % | balance |
What surface finishes work on C62580?
Not anodizable; use vapour degrease plus mechanical polish, chemical blackening, passivation or electroless nickel; the alumina film gives good natural tarnish resistance.
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 C62580 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B150
How much does C62580 cost?
C62580 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.
C62580 — frequently asked
What is C62580 used for?
C62580 is typically used for aircraft fasteners, high-strength bolts and forged fittings. In short: high-strength forging bronze; aerospace fastener grade; low ductility, hot work only.
What is the yield strength of C62580?
C62580 has a typical yield strength of 427 MPa (61.9 ksi) and a tensile strength of 772 MPa (112 ksi) — stronger than 83% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C62580 easy to machine?
Not especially — machinability is rated poor (25/100, worse than 86% of copper alloy grades). Machine like a hard bronze: rigid setup, sharp carbide (K-grade) tools, 5–8° positive rake, 60–120 m/min, generous flood coolant; chips are short and abrasive — rating only about 20 % of free-cutting brass.
Can C62580 be welded?
Not readily — weldability is rated poor (30/100). GTAW/GMAW with matching Al-bronze filler (ERCuAl-A2/A3), preheat 150–250 °C, tight interpass control and slow cooling; high Al content makes it crack- and oxide-film sensitive, so post-weld temper anneal is recommended.
What surface finishes work on C62580?
Not anodizable; use vapour degrease plus mechanical polish, chemical blackening, passivation or electroless nickel; the alumina film gives good natural tarnish resistance.
Can C62580 be formed, bent or molded?
Hot forge/extrude at roughly 750–870 °C; virtually no cold formability — bending or heading at room temperature will crack the eutectoid structure.
What is the maximum service temperature of C62580?
C62580 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 C62580-M30 and C62580-TQ50?
M30 is the default condition — standard stocked bar/rod condition: full hot-worked strength with the best elongation this alloy offers. TQ50: pick for maximum hardness and galling/wear resistance (dies, wear plates, guide blocks); ductility drops to ~2%. Yield strength is 427 MPa in M30 versus 545 MPa in TQ50.
How much does C62580 cost?
C62580 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 / copper.org alloy datasheets, wrought aluminium bronzes C62xxx — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- High-aluminium wrought bronze wear-alloy datasheets (AMPCO-class bar/forgings) — AMPCO Metal (2022)
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.