Copper Alloy C17300-TD01
Supply condition
UNS C17300 · ASTM B196 · EN CuBe2Pb, CW102C
TD01 = solution heat treated and cold worked, quarter hard
Light cold work for straighter, stiffer bar that will still be age hardened later.
Values for the TD01 condition
Other C17300 tempers and conditions
C17300 is listed in 9 conditions; see the grade overview at C17300.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ADefault Solution annealed | Soft, most-stocked supply condition for machining or forming before customer ageing. | 220 | 470 | 40 | 110 HB | 18 % IACS |
TD01This page Solution heat treated and cold worked, quarter hard | Light cold work for straighter, stiffer bar that will still be age hardened later. | 450 | 560 | 25 | 150 HB | 18 % IACS |
Solution heat treated and cold worked, half hard | Medium cold work; higher pre-age strength for parts machined then aged. | 550 | 640 | 15 | 12 HRC | 18 % IACS |
Solution heat treated and cold worked, full hard | Maximum cold-worked strength without ageing; best chip control on screw machines. | 660 | 760 | 6 | 22 HRC | 18 % IACS |
Hardened | Standard fully heat-treated condition (≈315 °C/3 h) for springs, tooling and high-strength machined parts. | 1,035 | 1,220 | 5 | 39 HRC | 23 % IACS |
Solution heat treated and precipitation hardened | Solution-annealed C17300 given a full precipitation age (~315–345 °C), giving peak strength and hardness with the free-machining benefit of the lead addition; ductility is low. | 1,035 | 1,210 | 5 | 39 HRC | 24 % IACS |
TD01 and precipitation hardened | Slightly higher strength than AT with retained ductility for machined spring parts. | 1,105 | 1,240 | 4 | 40 HRC | 23 % IACS |
TD02 and precipitation hardened | Higher yield strength for heavily loaded pins, bushings and die inserts. | 1,150 | 1,290 | 3 | 41 HRC | 23 % IACS |
TD04 and precipitation hardened | Peak strength and hardness condition; choose for maximum wear/bearing loads, ductility is minimal. | 1,240 | 1,380 | 2 | 42 HRC | 23 % IACS |
What is C17300-TD01?
C17300-TD01 is C17300 supplied in the TD01 condition — light cold work for straighter, stiffer bar that will still be age hardened later. C17300-TD01 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 560 MPa (81.2 ksi) — stronger than 86% of copper alloy grades. Elongation at break is 25% and the elastic modulus is 128 GPa (18.6 Msi). C17300-TD01 has a density of 8.26 g/cm³ (0.298 lb/in³), lighter than 83% of copper alloy grades. It melts at 865°C (1,589 °F). A is the default condition FabDigit quotes; TD01 is available on request or by drawing note.
Advantages
- High strength — 450 MPa (65.3 ksi), better than 86% of copper alloy grades
Limitations
- Limited service temperature — 100°C (212 °F), worse than 100% of copper alloy grades
- High embodied carbon — 7.5 kg CO₂/kg, worse than 97% of copper alloy grades
- Difficult to weld — 15/100, worse than 94% of copper alloy grades
C17300-TD01 properties
Typical room-temperature values for C17300-TD01; 22 are specific to this condition. Other listed values are C17300 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C17300-TD01 has a density of 8.26 g/cm³ (0.298 lb/in³), lighter than 83% of copper alloy grades. It melts at 865°C (1,589 °F).
Mechanical13
C17300-TD01 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 560 MPa (81.2 ksi) — stronger than 86% of copper alloy grades. Elongation at break is 25% and the elastic modulus is 128 GPa (18.6 Msi).
Thermal6
C17300-TD01 is rated for continuous service to 100°C (212 °F). It conducts heat at 105 W/m·K (60.7 BTU/hr·ft·°F), better than 56% of copper alloy grades. Thermal expansion is 17.5 µm/m·K (9.72 µin/in·°F).
Electrical3
C17300-TD01 conducts electricity at 18 % IACS, better than 51% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C17300-TD01 takes about 120 MJ of energy and emits 7.5 kg of CO₂ — more than 98% of copper alloy grades. Typical recycled content is 35%.
Manufacturability8
C17300-TD01's machinability is good (55/100, better than 71% of copper alloy grades); weldability poor (15/100); formability good (55/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C17300-TD01
Is C17300 easy to machine?
Lead makes it the easiest BeCu to turn (~60 % of AISI 1212); machine in Condition A or TD tempers, use carbide, flood coolant and wet dust control — beryllium-containing swarf and dust must be captured.
Can C17300 be welded?
Fusion welding is not recommended because of the lead; use resistance/spot welding, mechanical joints, or silver brazing with careful flux and post-braze re-ageing.
Can C17300 be formed, bent or molded?
Form, bend and thread only in Condition A or 1/4–1/2 hard; age at ~315 °C for 2–3 h afterwards, allowing ~0.1–0.2 % dimensional shrinkage.
What surface finishes work on C17300?
Not anodizable; electroless Ni, Ni/Au or Ag plating, passivation or bright polishing are standard — avoid ammonia-based cleaners to prevent stress-corrosion cracking.
C17300 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 |
|---|---|---|
| BeASTM B196 C17300 | 1.8 – 2 | 1.9 |
| Pbfree-machining addition | 0.2 – 0.6 | 0.4 |
| Ni+Co0.20 % minimum | ≥ 0.2 | 0.3 |
| Ni+Co+Fe0.6 % maximum combined | ≤ 0.6 | — |
| Curemainder, ~97.3 % | balance | — |
C17300-TD01 — frequently asked
What is C17300-TD01 used for?
C17300-TD01 is typically used for automatic-lathe pins and plungers, machined electrical contacts, miniature connector sockets, valve components, mould and die inserts and non-sparking safety tools. In short: high-strength copper; conductive.
What is the yield strength of C17300-TD01?
C17300-TD01 has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 560 MPa (81.2 ksi) — stronger than 86% of copper alloy grades. Strength varies by condition: see the 9 listed tempers.
Is C17300-TD01 easy to machine?
Reasonably — machinability is rated good (55/100, better than 71% of copper alloy grades). Lead makes it the easiest BeCu to turn (~60 % of AISI 1212); machine in Condition A or TD tempers, use carbide, flood coolant and wet dust control — beryllium-containing swarf and dust must be captured.
Can C17300-TD01 be welded?
Not readily — weldability is rated poor (15/100). Fusion welding is not recommended because of the lead; use resistance/spot welding, mechanical joints, or silver brazing with careful flux and post-braze re-ageing.
What surface finishes work on C17300-TD01?
Not anodizable; electroless Ni, Ni/Au or Ag plating, passivation or bright polishing are standard — avoid ammonia-based cleaners to prevent stress-corrosion cracking.
Can C17300-TD01 be formed, bent or molded?
Form, bend and thread only in Condition A or 1/4–1/2 hard; age at ~315 °C for 2–3 h afterwards, allowing ~0.1–0.2 % dimensional shrinkage.
What is the maximum service temperature of C17300-TD01?
C17300-TD01 is rated for continuous use to about 100°C (212 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C17300-A and C17300-TH04?
A is the default condition — soft, most-stocked supply condition for machining or forming before customer ageing. TH04: peak strength and hardness condition; choose for maximum wear/bearing loads, ductility is minimal. Yield strength is 220 MPa in A versus 1,240 MPa in TH04.
Can FabDigit make parts in C17300-TD01?
Yes — C17300-TD01 is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B196/B196M — Copper-Beryllium Alloy Rod and Bar — ASTM International (2018)
- ASTM B441 — Copper-Cobalt-Beryllium and Copper-Beryllium Rod/Bar (related tempers) — ASTM International (2019)
- CDA Alloy C17300 property sheet — Copper Development Association (2023)
- Alloy 25 / Alloy M25 technical data — Materion Brush Performance Alloys (2022)
- ASM Handbook Vol. 2 — Properties of Nonferrous 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.