Copper Alloy C63600
UNS C63600 · ASTM B150
C63600 is a low-alloy aluminum-silicon bronze to ASTM B150, supplied as rod and wire in O61 through H04 tempers plus M30.
Reference datasheet — C63600 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 O61 condition
C63600 tempers and conditions
C63600 is supplied in 6 conditions, soft to hard. O61 is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
O61Default Annealed | Softest condition — pick for deep cold heading, severe upsetting or maximum ductility. | 170 | 415 | 45 | 105 HB | 9.5 % IACS |
As hot extruded | As-extruded larger diameters before drawing — economical stock for machined parts and forging blanks. | 185 | 420 | 40 | 108 HB | 9.5 % IACS |
1/8 hard | Light draw for straight, sizeable rod that still cold-heads well — common fastener stock. | 275 | 450 | 35 | 130 HB | — |
Quarter hard | Quarter-hard rod/wire for higher proof strength fasteners and shafts with moderate remaining ductility. | 380 | 485 | 25 | 145 HB | — |
Half hard | Half-hard drawn rod/wire when higher strength and better chip control matter more than bending ductility. | 450 | 550 | 15 | 170 HB | — |
Full hard | Hard-drawn wire and small rod for springs, screens and high-strength fastener blanks. | 550 | 640 | 8 | 200 HB | — |
What is C63600?
C63600 is a low-alloy aluminum-silicon bronze to ASTM B150, supplied as rod and wire in O61 through H04 tempers plus M30. Default properties are 170 MPa yield, 415 MPa tensile, 45 % elongation and 105 HB (60 HRB), with 9.5 % IACS conductivity, a formability score of 90 and corrosion resistance rated 72, which suits cold-headed fasteners and connector bodies that must resist marine atmospheres. Machinability is only 35 (about 40 % of free-cutting brass) and service temperature is capped at 300 °C. C64210 is the higher-strength option when 415 MPa tensile is not enough. C63600 has a density of 8.3 g/cm³ (0.3 lb/in³), lighter than 80% of copper alloy grades. It melts at 1,027°C (1,881 °F). C63600 has a yield strength of 170 MPa (24.7 ksi) and a tensile strength of 415 MPa (60.2 ksi) — weaker than 62% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 117 GPa (17 Msi).
What is C63600 used for?
- electrical connectors
- corrosion-resistant fasteners
- marine fittings
Advantages
- Ductile — tolerates forming and impact — 45%, better than 91% of copper alloy grades
- Forms and bends easily — 90/100, better than 89% 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
- Good corrosion resistance — 72/100, better than 84% of copper alloy grades
Limitations
- Poor heat conductor — 45 W/m·K (26 BTU/hr·ft·°F), worse than 76% of copper alloy grades
- Low electrical conductivity — 9.5 % IACS, worse than 76% of copper alloy grades
C63600 properties
Typical room-temperature values for C63600-O61; bars are the position among copper alloy grades.
Physical3
C63600 has a density of 8.3 g/cm³ (0.3 lb/in³), lighter than 80% of copper alloy grades. It melts at 1,027°C (1,881 °F).
Mechanical13
C63600 has a yield strength of 170 MPa (24.7 ksi) and a tensile strength of 415 MPa (60.2 ksi) — weaker than 62% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C63600 is rated for continuous service to 300°C (572 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), worse than 76% of copper alloy grades. Thermal expansion is 16.7 µm/m·K (9.28 µin/in·°F).
Electrical3
C63600 conducts electricity at 9.5 % IACS, worse than 76% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 84% of copper alloy grades.
Sustainability4
Producing a kilogram of C63600 takes about 62 MJ of energy and emits 3.8 kg of CO₂ — more than 76% of copper alloy grades. Typical recycled content is 40%.
Manufacturability8
C63600's machinability is fair (35/100, better than 51% of copper alloy grades); weldability very good (70/100); formability excellent (90/100).
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. C63600 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C63600
Is C63600 easy to machine?
Rated ~40 % of free-cutting brass — use sharp positive-rake carbide, rigid setups, generous coolant and avoid dwelling; chips are stringy in the annealed temper, so prefer H01/H02 for screw-machine work.
Can C63600 be welded?
Readily GTAW/GMAW welded with aluminium-bronze filler (ERCuAl-A2) under argon; clean the tenacious Al oxide immediately before welding and keep interpass temperature low.
Can C63600 be formed, bent or molded?
Excellent cold-heading, upsetting and thread-rolling alloy in O61/H00; anneal around 600–650 °C with rapid cool if multiple heavy draws are needed.
C63600 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 | 3 – 4 | 3.5 |
| Si | 0.7 – 1.3 | 1 |
| Fe | ≤ 0.15 | |
| Zn | ≤ 0.15 | |
| Pb | ≤ 0.05 | |
| CuCu + Ag, remainder | ≥ 95 (balance) |
What surface finishes work on C63600?
Not anodisable; take a bright golden polish, and use abrasive/chemical de-oxidation before plating, soldering or lacquering to break the aluminium 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).
Equivalent designations
Standards and trade names that resolve to Copper Alloy C63600 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B150
How much does C63600 cost?
C63600 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.
C63600 — frequently asked
What is C63600 used for?
C63600 is typically used for electrical connectors, corrosion-resistant fasteners and marine fittings. In short: best cold-heading aluminum bronze; moderate strength, good conductivity; corrosion-resistant fastener stock.
What is the yield strength of C63600?
C63600 has a typical yield strength of 170 MPa (24.7 ksi) and a tensile strength of 415 MPa (60.2 ksi) — weaker than 62% of copper alloy grades. Strength varies by condition: see the 6 listed tempers.
Is C63600 easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of copper alloy grades). Rated ~40 % of free-cutting brass — use sharp positive-rake carbide, rigid setups, generous coolant and avoid dwelling; chips are stringy in the annealed temper, so prefer H01/H02 for screw-machine work.
Can C63600 be welded?
Yes — weldability is rated very good (70/100). Readily GTAW/GMAW welded with aluminium-bronze filler (ERCuAl-A2) under argon; clean the tenacious Al oxide immediately before welding and keep interpass temperature low.
What surface finishes work on C63600?
Not anodisable; take a bright golden polish, and use abrasive/chemical de-oxidation before plating, soldering or lacquering to break the aluminium oxide film.
Can C63600 be formed, bent or molded?
Excellent cold-heading, upsetting and thread-rolling alloy in O61/H00; anneal around 600–650 °C with rapid cool if multiple heavy draws are needed.
What is the maximum service temperature of C63600?
C63600 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 C63600-O61 and C63600-H04?
O61 is the default condition — softest condition — pick for deep cold heading, severe upsetting or maximum ductility. H04: hard-drawn wire and small rod for springs, screens and high-strength fastener blanks. Yield strength is 170 MPa in O61 versus 550 MPa in H04.
How much does C63600 cost?
C63600 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 Alloy Datasheet C63600 (UNS) — Copper Development Association (2023)
- 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; 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.