Copper Alloy C19100
UNS C19100
C19100 is a copper alloyed with nickel and tellurium: the tellurium gives free-cutting behaviour while the nickel provides age-hardening strength, so the alloy machines well and still holds 45 % IACS and 180 W/m·K.
Reference datasheet — C19100 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 TF00 condition
C19100 tempers and conditions
C19100 is supplied in 8 conditions, soft to hard. TF00 is the default FabDigit quotes; the values on this page are for it.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed to 0.050 mm grain size | Fully soft annealed rod/wire for maximum ductility before heading, upsetting or deep bending. | 105 | 275 | 40 | 65 HB | 46 % IACS |
As forged and quenched | Softest, most formable supply condition — Ni-P held in solution so the part can be coined/bent and then aged to full strength. | 140 | 310 | 35 | 72 HB | 35 % IACS |
As hot forged and air cooled | Standard delivery state of forgings and extrusions where partial in-process ageing gives a useful strength/conductivity balance without extra heat treatment. | 215 | 350 | 25 | 90 HB | 42 % IACS |
Quarter hard, drawn and stress relieved | Usual screw-machine rod condition: straight, low-residual-stress bar with mid-range strength and clean chip breaking. | 340 | 415 | 16 | 120 HB | 44 % IACS |
Half hard | Cold-drawn bar/wire when higher strength is wanted without an ageing cycle. | 380 | 450 | 12 | 130 HB | 43 % IACS |
TF00Default Solution heat treated and precipitation hardened | Pick for maximum strength plus recovered conductivity and best softening resistance in machined electrical parts. | 400 | 470 | 15 | 140 HB | 45 % IACS |
Full hard | Highest as-drawn strength and stiffness for pins, studs and spring-loaded contact stems; limited bending. | 450 | 500 | 8 | 150 HB | 42 % IACS |
TD04 and precipitation hardened | Maximum available strength: hard drawing followed by ageing, for highly loaded machined electrical hardware. | 500 | 550 | 8 | 165 HB | 44 % IACS |
What is C19100?
C19100 is a copper alloyed with nickel and tellurium: the tellurium gives free-cutting behaviour while the nickel provides age-hardening strength, so the alloy machines well and still holds 45 % IACS and 180 W/m·K. Default properties are 400 MPa yield, 470 MPa tensile, 15 % elongation and 140 HB (75 HRB), with a maximum service temperature of 300 °C — the highest in this lightly alloyed copper group. It is stocked as rod and bar in TF00, M10, M11, HR01, OS050, H02, H04 and TH04 for screw-machine work. Fusion welding is restricted by tellurium hot cracking and formability rates only 40; C14500 tellurium copper is the alternative when strength is less important than conductivity. C19100 has a density of 8.86 g/cm³ (0.32 lb/in³), heavier than 68% of copper alloy grades. It melts at 1,035°C (1,895 °F). C19100 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 80% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 121 GPa (17.5 Msi).
What is C19100 used for?
- precision machined electrical parts
- connectors
- switch components
Advantages
- Easy to machine — 82/100, better than 90% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- High strength — 400 MPa (58 ksi), better than 80% of copper alloy grades
- High electrical conductivity — 45 % IACS, better than 77% of copper alloy grades
- Conducts heat well — 180 W/m·K (104 BTU/hr·ft·°F), better than 75% of copper alloy grades
Limitations
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C19100 properties
Typical room-temperature values for C19100-TF00; bars are the position among copper alloy grades.
Physical3
C19100 has a density of 8.86 g/cm³ (0.32 lb/in³), heavier than 68% of copper alloy grades. It melts at 1,035°C (1,895 °F).
Mechanical13
C19100 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 80% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 121 GPa (17.5 Msi).
Thermal6
C19100 is rated for continuous service to 300°C (572 °F). It conducts heat at 180 W/m·K (104 BTU/hr·ft·°F), better than 75% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
C19100 conducts electricity at 45 % IACS, better than 77% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C19100 takes about 57 MJ of energy and emits 3.8 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 30%.
Manufacturability7
C19100's machinability is very good (82/100, better than 90% of copper alloy grades); weldability poor (25/100); formability fair (40/100).
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. C19100 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C19100
Is C19100 easy to machine?
Excellent free-cutting behaviour (~80 % of free-cutting brass): use sharp positive-rake carbide or HSS tools, high speed, light feeds and soluble-oil coolant; tellurium gives short chips without lead.
Can C19100 be welded?
Fusion welding is generally avoided — tellurium promotes hot cracking; join by silver brazing, soldering or resistance/friction welding, or use mechanical fastening.
Can C19100 be formed, bent or molded?
Hot forge/extrude at about 750–875 °C then air cool (M10) or quench (M11); cold bending and heading are best done in the quenched or annealed state, followed by 425–500 °C ageing for strength.
C19100 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 |
|---|---|---|
| Niwith Co counted as Ni in some registrations | 0.6 – 1.2 | 0.9 |
| Tefree-machining chip breaker | 0.35 – 0.7 | 0.5 |
| Pforms Ni-P precipitates | 0.15 – 0.35 | 0.25 |
| Pb | ≤ 0.2 | |
| Zn | ≤ 0.5 | |
| Fe | ≤ 0.1 | |
| Cu98.4 % min including Ni, Te, P per CDA registration | balance |
What surface finishes work on C19100?
Not anodisable; readily electroplated with Ni, Ag or Sn after cyanide-free acid activation, and takes a bright mechanical polish. Tellurium-bearing turnings should be segregated for recycling.
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).
How much does C19100 cost?
C19100 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.
C19100 — frequently asked
What is C19100 used for?
C19100 is typically used for precision machined electrical parts, connectors and switch components. In short: free-cutting conductive copper; 300 °C service temperature; age-hardenable machining grade.
What is the yield strength of C19100?
C19100 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 80% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C19100 easy to machine?
Yes — machinability is rated very good (82/100, better than 90% of copper alloy grades). Excellent free-cutting behaviour (~80 % of free-cutting brass): use sharp positive-rake carbide or HSS tools, high speed, light feeds and soluble-oil coolant; tellurium gives short chips without lead.
Can C19100 be welded?
Not readily — weldability is rated poor (25/100). Fusion welding is generally avoided — tellurium promotes hot cracking; join by silver brazing, soldering or resistance/friction welding, or use mechanical fastening.
What surface finishes work on C19100?
Not anodisable; readily electroplated with Ni, Ag or Sn after cyanide-free acid activation, and takes a bright mechanical polish. Tellurium-bearing turnings should be segregated for recycling.
Can C19100 be formed, bent or molded?
Hot forge/extrude at about 750–875 °C then air cool (M10) or quench (M11); cold bending and heading are best done in the quenched or annealed state, followed by 425–500 °C ageing for strength.
What is the maximum service temperature of C19100?
C19100 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 C19100-TF00 and C19100-OS050?
TF00 is the default condition — pick for maximum strength plus recovered conductivity and best softening resistance in machined electrical parts. OS050: fully soft annealed rod/wire for maximum ductility before heading, upsetting or deep bending. Yield strength is 400 MPa in TF00 versus 105 MPa in OS050.
How much does C19100 cost?
C19100 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
- Copper Alloy C19100 datasheet (composition, properties, temper table) — Copper Development Association (2024)
- ASTM B301 / B441 — Free-Cutting and Tellurium/Nickel-Bearing Copper Rod and Bar — ASTM International (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
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.