Copper Alloy C17465-TD04
Supply condition
UNS C17465
TD04 = solution heat treated and cold worked, full hard
Cold-drawn rod/strip used where the part will be aged after machining, or where moderate strength without heat treatment is enough.
Values for the TD04 condition
Other C17465 tempers and conditions
C17465 is listed in 6 conditions; see the grade overview at C17465.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution heat treated | Softest, most formable condition — pick when parts are deep-formed or heavily machined before age hardening. | 160 | 330 | 28 | 90 HB | 28 % IACS |
Solution heat treated and cold worked, half hard | Intermediate stiffness/strength for parts that still need some bending before aging. | 370 | 450 | 12 | 130 HB | 30 % IACS |
TD04This page Solution heat treated and cold worked, full hard | Cold-drawn rod/strip used where the part will be aged after machining, or where moderate strength without heat treatment is enough. | 480 | 540 | 8 | 160 HB | 32 % IACS |
TF00Default Solution heat treated and precipitation hardened | Standard stocked rod condition: near-isotropic aged properties with high conductivity, best for machined electrode and contact parts. | 550 | 690 | 15 | 22 HRC | 50 % IACS |
TD02 and precipitation hardened | Compromise between the ductility of TF00 and the peak strength of TH04 for formed-then-aged components. | 620 | 725 | 12 | 24 HRC | 50 % IACS |
TD04 and precipitation hardened | Peak-strength condition for small-diameter rod, springs and highly loaded contacts that still need ~50 % IACS. | 690 | 760 | 9 | 28 HRC | 52 % IACS |
What is C17465-TD04?
C17465-TD04 is C17465 supplied in the TD04 condition — cold-drawn rod/strip used where the part will be aged after machining, or where moderate strength without heat treatment is enough. C17465-TD04 has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 540 MPa (78.3 ksi) — stronger than 88% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 138 GPa (20 Msi). C17465-TD04 has a density of 8.83 g/cm³ (0.319 lb/in³), heavier than 65% of copper alloy grades. It melts at 1,000°C (1,832 °F). TF00 is the default condition FabDigit quotes; TD04 is available on request or by drawing note.
Advantages
- Stiff — 138 GPa (20 Msi), better than 95% of copper alloy grades
- High strength — 480 MPa (69.6 ksi), better than 88% of copper alloy grades
- Easy to machine — 68/100, better than 77% of copper alloy grades
Limitations
- High embodied carbon — 6.5 kg CO₂/kg, worse than 94% of copper alloy grades
- Limited ductility — 8%, worse than 83% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C17465-TD04 properties
Typical room-temperature values for C17465-TD04; 17 are specific to this condition. Other listed values are C17465 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C17465-TD04 has a density of 8.83 g/cm³ (0.319 lb/in³), heavier than 65% of copper alloy grades. It melts at 1,000°C (1,832 °F).
Mechanical16
C17465-TD04 has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 540 MPa (78.3 ksi) — stronger than 88% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 138 GPa (20 Msi).
Thermal6
C17465-TD04 is rated for continuous service to 200°C (392 °F). It conducts heat at 145 W/m·K (83.8 BTU/hr·ft·°F), better than 72% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
C17465-TD04 conducts electricity at 32 % IACS, better than 72% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), better than 58% of copper alloy grades.
Sustainability4
Producing a kilogram of C17465-TD04 takes about 100 MJ of energy and emits 6.5 kg of CO₂ — more than 96% of copper alloy grades. Typical recycled content is 30%.
Manufacturability8
C17465-TD04's machinability is good (68/100, better than 77% 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 C17465-TD04
Is C17465 easy to machine?
Lead addition gives short chips and good surface finish — turn dry or with flood coolant at BeCu speeds, and capture all dust/fines under local exhaust because beryllium particulate is hazardous.
Can C17465 be welded?
Fusion welding is unreliable (lead-induced hot cracking); use resistance or electron-beam joining on unleaded transition pieces, or mechanical/brazed joints.
Can C17465 be formed, bent or molded?
Form only in TB00/TD02; aged tempers have limited bend ductility — age after forming (typically ~480 °C, 2–3 h) with allowance for slight growth.
What surface finishes work on C17465?
Not anodizable; electroless nickel, silver or tin plating are standard, and the aged alloy polishes to a bright, wear-resistant surface.
C17465 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 |
|---|---|---|
| Beprecipitation hardening element | 0.15 – 0.5 | 0.3 |
| Niforms NiBe precipitates | 1 – 1.4 | 1.2 |
| Pbfree-machining addition | 0.2 – 0.6 | 0.4 |
| CuCu + named elements 99.5 % min | balance | — |
C17465-TD04 — frequently asked
What is C17465-TD04 used for?
C17465-TD04 is typically used for connectors, precision bushings and molds. In short: free-machining beryllium copper; 50 % IACS at 550 MPa; 300 °C service ceiling.
What is the yield strength of C17465-TD04?
C17465-TD04 has a typical yield strength of 480 MPa (69.6 ksi) and a tensile strength of 540 MPa (78.3 ksi) — stronger than 88% of copper alloy grades. Strength varies by condition: see the 6 listed tempers.
Is C17465-TD04 easy to machine?
Reasonably — machinability is rated good (68/100, better than 77% of copper alloy grades). Lead addition gives short chips and good surface finish — turn dry or with flood coolant at BeCu speeds, and capture all dust/fines under local exhaust because beryllium particulate is hazardous.
Can C17465-TD04 be welded?
Not readily — weldability is rated poor (25/100). Fusion welding is unreliable (lead-induced hot cracking); use resistance or electron-beam joining on unleaded transition pieces, or mechanical/brazed joints.
What surface finishes work on C17465-TD04?
Not anodizable; electroless nickel, silver or tin plating are standard, and the aged alloy polishes to a bright, wear-resistant surface.
Can C17465-TD04 be formed, bent or molded?
Form only in TB00/TD02; aged tempers have limited bend ductility — age after forming (typically ~480 °C, 2–3 h) with allowance for slight growth.
What is the maximum service temperature of C17465-TD04?
C17465-TD04 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 C17465-TF00 and C17465-TB00?
TF00 is the default condition — standard stocked rod condition: near-isotropic aged properties with high conductivity, best for machined electrode and contact parts. TB00: softest, most formable condition — pick when parts are deep-formed or heavily machined before age hardening. Yield strength is 550 MPa in TF00 versus 160 MPa in TB00.
Sources
- ASTM B441 / B534 — Cu-Ni-Be rod, bar and plate — ASTM International (2020)
- CDA Copper Alloy Database — C17460 / C17465 — Copper Development Association (2023)
- High-conductivity beryllium copper (Alloy 3 / Alloy 174) data — Materion Brush Performance Alloys (2022)
- ASM Handbook Vol. 2 — Properties of Copper and Copper Alloys — ASM International (1990)
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.