Copper Alloy C14510-H06
Supply condition
UNS C14510
H06 = extra hard
For small-diameter pins and contacts needing maximum stiffness and hardness; very limited ductility.
Values for the H06 condition
Other C14510 tempers and conditions
C14510 is listed in 8 conditions; see the grade overview at C14510.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Pick for maximum conductivity, deep cold forming, riveting or staking of machined parts. | 75 | 225 | 50 | 45 HB | 95 % IACS |
As hot rolled | Large-diameter extruded rod/bar sold before drawing; used where sections are turned heavily anyway. | 85 | 230 | 45 | 50 HB | 94 % IACS |
Annealed to 0.050 mm grain size | Grain-size-controlled anneal for strip/wire that will be deep drawn or heavily formed after supply. | 85 | 235 | 48 | 48 HB | 95 % IACS |
1/8 hard | Light draw for straightness and size tolerance while keeping most of the annealed ductility. | 165 | 250 | 35 | 66 HB | 94 % IACS |
Quarter hard | Compromise temper when parts must be machined and then bent or crimped. | 215 | 275 | 25 | 68 HB | 94 % IACS |
Half hard | Standard temper for screw-machine parts that still need moderate staking, swaging or bending. | 250 | 300 | 20 | 78 HB | 93 % IACS |
H04Default Full hard | Default stock temper for free-machining rod and bar: best chip control, straightness and strength. | 305 | 340 | 12 | 90 HB | 93 % IACS |
H06This page Extra hard | For small-diameter pins and contacts needing maximum stiffness and hardness; very limited ductility. | 350 | 380 | 7 | 68 HRB | 92 % IACS |
What is C14510-H06?
C14510-H06 is C14510 supplied in the H06 condition — for small-diameter pins and contacts needing maximum stiffness and hardness; very limited ductility. C14510-H06 has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 380 MPa (55.1 ksi) — stronger than 74% of copper alloy grades. Elongation at break is 7% and the elastic modulus is 117 GPa (17 Msi). C14510-H06 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,051°C (1,924 °F). H04 is the default condition FabDigit quotes; H06 is available on request or by drawing note.
Advantages
- Easy to machine — 88/100, better than 96% of copper alloy grades
- Conducts heat well — 355 W/m·K (205.1 BTU/hr·ft·°F), better than 90% of copper alloy grades
- High electrical conductivity — 92 % IACS, better than 89% of copper alloy grades
Limitations
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
- Limited ductility — 7%, worse than 86% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C14510-H06 properties
Typical room-temperature values for C14510-H06; 10 are specific to this condition. Other listed values are C14510 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C14510-H06 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,051°C (1,924 °F).
Mechanical13
C14510-H06 has a yield strength of 350 MPa (50.8 ksi) and a tensile strength of 380 MPa (55.1 ksi) — stronger than 74% of copper alloy grades. Elongation at break is 7% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C14510-H06 is rated for continuous service to 150°C (302 °F). It conducts heat at 355 W/m·K (205.1 BTU/hr·ft·°F), better than 90% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
C14510-H06 conducts electricity at 92 % IACS, better than 89% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C14510-H06 takes about 57 MJ of energy and emits 3.8 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
C14510-H06's machinability is excellent (88/100, better than 96% of copper alloy grades); weldability poor (25/100); formability poor (30/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C14510-H06
Is C14510 easy to machine?
Runs like free-cutting brass at high speed with sharp positive-rake tools and light feeds; expect short broken chips and ~85 % of C36000 productivity.
Can C14510 be welded?
Avoid fusion welding — tellurium causes hot short cracking; join by soldering, silver brazing or resistance/friction methods.
Can C14510 be formed, bent or molded?
Half-hard and softer tempers bend and stake well thanks to the low-P chemistry; H04/H06 tolerate only light forming, anneal 400–600 °C if severe work is needed.
What surface finishes work on C14510?
Solders and silver-brazes readily, plates well with Ni/Ag/Sn after acid activation; not anodisable and will tarnish unless lacquered or plated.
C14510 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 |
|---|---|---|
| Tefree-machining chip-breaking phase (Cu₂Te) | 0.3 – 0.7 | 0.5 |
| Plow, controlled deoxidant — keeps conductivity high | 0 – 0.02 | 0.01 |
| Agcounted with Cu in the 99.90 % min total | — | — |
| CuCu + Ag + Te + P ≥ 99.90 % | balance | — |
C14510-H06 — frequently asked
What is C14510-H06 used for?
C14510-H06 is typically used for connectors and terminals, switch and relay parts and cold-headed fasteners. In short: free-machining copper, 93% IACS; better cold heading than C14500; high conductivity, high machinability.
What is the yield strength of C14510-H06?
C14510-H06 has a typical yield strength of 350 MPa (50.8 ksi) and a tensile strength of 380 MPa (55.1 ksi) — stronger than 74% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C14510-H06 easy to machine?
Yes — machinability is rated excellent (88/100, better than 96% of copper alloy grades). Runs like free-cutting brass at high speed with sharp positive-rake tools and light feeds; expect short broken chips and ~85 % of C36000 productivity.
Can C14510-H06 be welded?
Not readily — weldability is rated poor (25/100). Avoid fusion welding — tellurium causes hot short cracking; join by soldering, silver brazing or resistance/friction methods.
What surface finishes work on C14510-H06?
Solders and silver-brazes readily, plates well with Ni/Ag/Sn after acid activation; not anodisable and will tarnish unless lacquered or plated.
Can C14510-H06 be formed, bent or molded?
Half-hard and softer tempers bend and stake well thanks to the low-P chemistry; H04/H06 tolerate only light forming, anneal 400–600 °C if severe work is needed.
What is the maximum service temperature of C14510-H06?
C14510-H06 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C14510-H04 and C14510-O60?
H04 is the default condition — default stock temper for free-machining rod and bar: best chip control, straightness and strength. O60: pick for maximum conductivity, deep cold forming, riveting or staking of machined parts. Yield strength is 305 MPa in H04 versus 75 MPa in O60.
Sources
- ASTM B301 / B301M — Free-Cutting Copper Rod, Bar, Wire and Shapes — ASTM International (2020)
- CDA Alloy Database — C14500 / C14510 Tellurium Copper — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Tellurium copper rod technical data — Wieland / Aurubis / Ningbo Jintian (2023)
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.