Copper Alloy C19410
UNS C19410
C19410 is a zinc-modified variant of the C19400 iron-bearing copper strip family, with composition adjusted for improved solderability while keeping useful stamping strength.
Reference datasheet — C19410 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 H02 condition
C19410 tempers and conditions
C19410 is supplied in 9 conditions, soft to hard. H02 is the default FabDigit quotes; the values on this page are for it.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Pick for deep drawing, severe forming or when maximum conductivity and ductility matter more than strength. | 130 | 310 | 32 | 66 HB | 65 % IACS |
1/8 hard | Light temper for parts needing tight bends with slightly higher strength than annealed. | 240 | 340 | 20 | 90 HB | 64 % IACS |
Quarter hard | Balanced temper for stamped shields and terminals with 90° bends transverse and longitudinal. | 305 | 365 | 14 | 104 HB | 63 % IACS |
H02Default Half hard | Most widely stocked lead-frame / connector strip temper: good stamping and bend performance at ~415 MPa. | 370 | 415 | 8 | 118 HB | 62 % IACS |
H04 + stress relieved | Use when flatness after stamping and improved stress-relaxation resistance at 100–150 °C are required. | 410 | 440 | 7 | 128 HB | 63 % IACS |
Full hard | Standard temper for high-speed stamped contacts and lead frames needing higher yield and flat-part stiffness. | 420 | 450 | 5 | 132 HB | 61 % IACS |
Extra hard | For flat springs and contacts where higher yield and stress-relaxation resistance are needed and bends are shallow. | 455 | 480 | 3 | 140 HB | 61 % IACS |
Spring hard | Spring temper strip for contact fingers; bending must follow the rolling direction, expect springback. | 490 | 510 | 2 | 146 HB | 60 % IACS |
Extra spring hard | Maximum cold-rolled strength for thin spring contacts; very limited formability. | 520 | 540 | 2 | 152 HB | 60 % IACS |
What is C19410?
C19410 is a zinc-modified variant of the C19400 iron-bearing copper strip family, with composition adjusted for improved solderability while keeping useful stamping strength. It is used for high-volume progressive-die work such as lead frames and connector contacts, and is supplied as cold-rolled strip and coil in tempers O60 through H10 plus H04-SR. The default temper gives 370 MPa yield, 415 MPa tensile and 8 % elongation at 62 % IACS, so it trades conductivity against C19210. Service is limited to about 200 °C and cold-worked tempers soften if fusion welded. C19410 has a density of 8.91 g/cm³ (0.322 lb/in³), heavier than 80% of copper alloy grades. It melts at 1,085°C (1,985 °F). C19410 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 415 MPa (60.2 ksi) — stronger than 75% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 121 GPa (17.5 Msi).
What is C19410 used for?
- lead frames
- connector terminals
- fuse clips
- switch contacts
Advantages
- Conducts heat well — 260 W/m·K (150.2 BTU/hr·ft·°F), better than 82% of copper alloy grades
- High electrical conductivity — 62 % IACS, better than 82% of copper alloy grades
- Forms and bends easily — 65/100, better than 78% of copper alloy grades
- High strength — 370 MPa (53.7 ksi), better than 75% of copper alloy grades
Limitations
- Difficult to machine — 22/100, worse than 94% of copper alloy grades
- Limited ductility — 8%, worse than 83% of copper alloy grades
C19410 properties
Typical room-temperature values for C19410-H02; bars are the position among copper alloy grades.
Physical3
C19410 has a density of 8.91 g/cm³ (0.322 lb/in³), heavier than 80% of copper alloy grades. It melts at 1,085°C (1,985 °F).
Mechanical13
C19410 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 415 MPa (60.2 ksi) — stronger than 75% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 121 GPa (17.5 Msi).
Thermal6
C19410 is rated for continuous service to 200°C (392 °F). It conducts heat at 260 W/m·K (150.2 BTU/hr·ft·°F), better than 82% of copper alloy grades. Thermal expansion is 16.6 µm/m·K (9.22 µin/in·°F).
Electrical3
C19410 conducts electricity at 62 % IACS, better than 82% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of C19410 takes about 62 MJ of energy and emits 3.8 kg of CO₂ — more than 76% of copper alloy grades. Typical recycled content is 35%.
Manufacturability7
C19410's machinability is poor (22/100, worse than 94% of copper alloy grades); weldability good (55/100); formability good (65/100).
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. C19410 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C19410
Is C19410 easy to machine?
Poor chip-breaking, gummy like most high-copper alloys (≈20 % of free-cutting brass) — use sharp positive-rake tools, high speed, flood coolant; prefer stamping/etching over milling.
Can C19410 be welded?
Resistance and laser welding are practical on thin strip; fusion welding with filler is rarely used because heat softens the cold-worked temper — soldering and brazing are the normal joining routes.
Can C19410 be formed, bent or molded?
Excellent progressive-die stamping stock; specify H01/H02 for 90° bends across the rolling direction and H06–H10 only for shallow forms, allowing for springback.
C19410 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 |
|---|---|---|
| Fedispersed Fe-rich phase gives strength and softening resistance | 1.8 – 2.3 | 2.05 |
| Prange per CDA registration; verify against mill certificate | 0.05 – 0.2 | 0.12 |
| ZnZn addition aids solder/tin-plate behaviour | 0.05 – 0.2 | 0.12 |
| Pbimpurity limit | ≤ 0.03 | |
| Curemainder, Cu + named elements ≥ 99.5 % | ≥ 97 (balance) |
What surface finishes work on C19410?
Not anodizable; standard finishes are hot-dip/reflow tin, matte tin, nickel underplate with Ag/Au flash for contacts, and it can be bright-rolled or chemically brightened.
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 C19410 cost?
C19410 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.
C19410 — frequently asked
What is C19410 used for?
C19410 is typically used for lead frames, connector terminals, fuse clips and switch contacts. In short: solderable connector strip; zinc-modified C19400 variant; strength over conductivity.
What is the yield strength of C19410?
C19410 has a typical yield strength of 370 MPa (53.7 ksi) and a tensile strength of 415 MPa (60.2 ksi) — stronger than 75% of copper alloy grades. Strength varies by condition: see the 9 listed tempers.
Is C19410 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 94% of copper alloy grades). Poor chip-breaking, gummy like most high-copper alloys (≈20 % of free-cutting brass) — use sharp positive-rake tools, high speed, flood coolant; prefer stamping/etching over milling.
Can C19410 be welded?
Yes — weldability is rated good (55/100). Resistance and laser welding are practical on thin strip; fusion welding with filler is rarely used because heat softens the cold-worked temper — soldering and brazing are the normal joining routes.
What surface finishes work on C19410?
Not anodizable; standard finishes are hot-dip/reflow tin, matte tin, nickel underplate with Ag/Au flash for contacts, and it can be bright-rolled or chemically brightened.
Can C19410 be formed, bent or molded?
Excellent progressive-die stamping stock; specify H01/H02 for 90° bends across the rolling direction and H06–H10 only for shallow forms, allowing for springback.
What is the maximum service temperature of C19410?
C19410 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 C19410-H02 and C19410-O60?
H02 is the default condition — most widely stocked lead-frame / connector strip temper: good stamping and bend performance at ~415 MPa. O60: pick for deep drawing, severe forming or when maximum conductivity and ductility matter more than strength. Yield strength is 370 MPa in H02 versus 130 MPa in O60.
How much does C19410 cost?
C19410 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
- ASTM B465 — Copper-Iron Alloy Plate, Sheet, Strip and Rolled Bar — ASTM International (2020)
- CDA Alloy Database — C19400/C19410 high-copper iron alloys — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- High-performance copper strip for lead frames and connectors (194-type) — Copper strip producers (e.g. Wieland, Olin/Global Brass, Ningbo Xingye) (2023)
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.