Copper Alloy C19410-O60
Temper
UNS C19410
O60 = soft annealed
Pick for deep drawing, severe forming or when maximum conductivity and ductility matter more than strength.
Values for the O60 condition
Other C19410 tempers and conditions
C19410 is listed in 9 conditions; see the grade overview at C19410.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
O60This page 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-O60?
C19410-O60 is C19410 in the O60 temper — pick for deep drawing, severe forming or when maximum conductivity and ductility matter more than strength. C19410-O60 has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 77% of copper alloy grades. Elongation at break is 32% and the elastic modulus is 120 GPa (17.4 Msi). C19410-O60 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). H02 is the default condition FabDigit quotes; O60 is available on request or by drawing note.
Advantages
- Forms and bends easily — 90/100, better than 89% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Conducts heat well — 262 W/m·K (151.4 BTU/hr·ft·°F), better than 82% of copper alloy grades
- High electrical conductivity — 65 % IACS, better than 82% of copper alloy grades
- Readily welded — 65/100, better than 80% of copper alloy grades
Limitations
- Difficult to machine — 18/100, worse than 100% of copper alloy grades
- Low strength — 130 MPa (18.9 ksi), worse than 77% of copper alloy grades
C19410-O60 properties
Typical room-temperature values for C19410-O60; 19 are specific to this condition. Other listed values are C19410 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C19410-O60 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-O60 has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 77% of copper alloy grades. Elongation at break is 32% and the elastic modulus is 120 GPa (17.4 Msi).
Thermal6
C19410-O60 is rated for continuous service to 300°C (572 °F). It conducts heat at 262 W/m·K (151.4 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-O60 conducts electricity at 65 % 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-O60 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-O60's machinability is poor (18/100, worse than 100% of copper alloy grades); weldability good (65/100); formability excellent (90/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C19410-O60
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.
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.
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) | — |
C19410-O60 — frequently asked
What is C19410-O60 used for?
C19410-O60 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-O60?
C19410-O60 has a typical yield strength of 130 MPa (18.9 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 77% of copper alloy grades. Strength varies by condition: see the 9 listed tempers.
Is C19410-O60 easy to machine?
Not especially — machinability is rated poor (18/100, worse than 100% 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-O60 be welded?
Yes — weldability is rated good (65/100). 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-O60?
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-O60 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-O60?
C19410-O60 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 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.