Copper Alloy C14500 · supply condition
Copper Alloy C14500-H01
Properties of the H01 condition, compared with the other C14500 tempers.
Intermediate temper when H02 is too stiff to bend but annealed rod is too soft to machine cleanly.
What is C14500-H01?
C14500-H01 is C14500 supplied in the H01 condition — intermediate temper when H02 is too stiff to bend but annealed rod is too soft to machine cleanly. C14500-H01 has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 285 MPa (41.3 ksi) — stronger than 53% of copper alloy grades. Elongation at break is 22% and the elastic modulus is 117 GPa (17 Msi). C14500-H01 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). H02 is the default condition FabDigit quotes; H01 is available on request or by drawing note.
Advantages
- Easy to machine — 85/100, better than 93% of copper alloy grades
- Conducts heat well — 350 W/m·K (202.2 BTU/hr·ft·°F), better than 88% of copper alloy grades
- High electrical conductivity — 92 % IACS, better than 88% of copper alloy grades
Limitations
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C14500-H01 properties
Typical room-temperature values for C14500-H01 — 9 properties are specific to this condition; the rest are grade-level values shared by every C14500 temper. Each bar shows where the value sits among the copper alloy grades in FabDigit's library — further right is higher.
Physical3
C14500-H01 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).
Mechanical11
C14500-H01 has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 285 MPa (41.3 ksi) — stronger than 53% of copper alloy grades. Elongation at break is 22% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C14500-H01 is rated for continuous service to 200°C (392 °F). It conducts heat at 350 W/m·K (202.2 BTU/hr·ft·°F), better than 88% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
C14500-H01 conducts electricity at 92 % IACS, better than 88% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C14500-H01 takes about 57 MJ of energy and emits 3.6 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 35%.
Manufacturability6
C14500-H01's machinability is excellent (85/100, better than 93% of copper alloy grades); weldability poor (25/100); formability fair (50/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other C14500 tempers and conditions
C14500 is also supplied in 7 other conditions. The full side-by-side table is on the C14500 overview.
- H02DefaultThe standard stocked temper for CNC/screw-machine work: best balance of chip control, tight tolerance, strength and ~92 % IACS.275 MPa yield · 85 HB
- H04Choose for maximum strength, thread and wear resistance in small-diameter rod and wire; low ductility, so avoid post-machining bending.310 MPa yield · 100 HB
- H01Intermediate temper when H02 is too stiff to bend but annealed rod is too soft to machine cleanly.240 MPa yield · 78 HB
- H00Lightly drawn for straightness and good surface with still-high ductility; used where the part is bent or upset after machining.205 MPa yield · 70 HB
- M11Hot-forged tellurium copper water-quenched from forging heat — finer as-forged structure, marginally higher strength and hardness than air-cooled M10 with unchanged conductivity.76 MPa yield · 55 HB
- O60Pick for maximum conductivity, bending/riveting and forming before machining; lowest strength and gummiest cut of the temper range.70 MPa yield · 45 HB
- M10Hot-forged tellurium copper cooled in still air — essentially soft, near-annealed strength with full free-machining behaviour and ~93% IACS conductivity.69 MPa yield · 50 HB
Working with C14500-H01
Is C14500 easy to machine?
Machines like free-cutting brass: sharp positive-rake carbide or HSS tooling, high speed with light feeds, chips break short; needs no leaded stock, use soluble-oil coolant for burr-free threads.
Can C14500 be welded?
Fusion welding is not recommended — tellurium promotes hot cracking; resistance welding is fair and soldering/silver brazing are excellent (use low-temperature filler and non-corrosive flux).
Can C14500 be formed, bent or molded?
Hot forge/extrude at 750–875 °C; cold bending and heading are only fair (tellurium reduces cold ductility), so form in O60/H00 temper and anneal at 425–650 °C between passes.
What surface finishes work on C14500?
Not anodisable; tin, nickel or silver plate for contacts, or passivate with benzotriazole/lacquer to stop tarnish; buffs to a bright finish but small Cu₂Te particles can show as fine pitting on mirror polish.
C14500 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 |
|---|---|---|
| Tetellurium — chip-breaking dispersoid (Cu₂Te) | 0.4 – 0.7 | 0.5 |
| Pdeoxidiser residual | 0 – 0.01 | 0.01 |
| CuCu + Ag + Te + P ≥ 99.90 % per ASTM B301 / UNS C14500 | ≥ 99.9 (balance) | — |
C14500-H01 — frequently asked
What is C14500-H01 used for?
C14500-H01 is typically used for electrical connectors and terminals, resistance welding tips and nozzles, contact and current-carrying screws, electrode holders, switchgear and circuit-breaker components and automotive electrical fittings. In short: easiest machining copper.
What is the yield strength of C14500-H01?
C14500-H01 has a typical yield strength of 240 MPa (34.8 ksi) and a tensile strength of 285 MPa (41.3 ksi) — stronger than 53% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C14500-H01 easy to machine?
Yes — machinability is rated excellent (85/100, better than 93% of copper alloy grades). Machines like free-cutting brass: sharp positive-rake carbide or HSS tooling, high speed with light feeds, chips break short; needs no leaded stock, use soluble-oil coolant for burr-free threads.
Can C14500-H01 be welded?
Not readily — weldability is rated poor (25/100). Fusion welding is not recommended — tellurium promotes hot cracking; resistance welding is fair and soldering/silver brazing are excellent (use low-temperature filler and non-corrosive flux).
What surface finishes work on C14500-H01?
Not anodisable; tin, nickel or silver plate for contacts, or passivate with benzotriazole/lacquer to stop tarnish; buffs to a bright finish but small Cu₂Te particles can show as fine pitting on mirror polish.
Can C14500-H01 be formed, bent or molded?
Hot forge/extrude at 750–875 °C; cold bending and heading are only fair (tellurium reduces cold ductility), so form in O60/H00 temper and anneal at 425–650 °C between passes.
What is the maximum service temperature of C14500-H01?
C14500-H01 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C14500-H02 and C14500-M10?
H02 is the default condition — the standard stocked temper for CNC/screw-machine work: best balance of chip control, tight tolerance, strength and ~92 % IACS. M10: hot-forged tellurium copper cooled in still air — essentially soft, near-annealed strength with full free-machining behaviour and ~93% IACS conductivity. Yield strength is 275 MPa in H02 versus 69 MPa in M10.
Can FabDigit make parts in C14500-H01?
Yes — C14500-H01 is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B301/B301M — Free-Cutting Copper Rod, Bar, Wire and Shapes — ASTM International (2018)
- UNS C14500 Alloy Datasheet (Tellurium Copper) — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- EN 12163 / EN 12164 — Copper and copper alloys, rod for general and free machining purposes (CW118C) — CEN (2016)
- Tellurium Copper 145 rod technical data — Farmers Copper / Aviva Metals (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.