Copper Alloy C41300-H10
Supply condition
UNS C41300
H10 = extra spring hard
Highest-strength rolled condition — pick only for flat or very lightly formed spring elements.
Values for the H10 condition
Other C41300 tempers and conditions
C41300 is listed in 10 conditions; see the grade overview at C41300.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed to 0.050 mm grain size | Softest commercial temper — pick for deep drawing, severe forming and re-drawn parts. | 117 | 331 | 45 | 65 HB | 29 % IACS |
Annealed to 0.025 mm grain size | Fine-grain anneal — pick when a smooth orange-peel-free surface after forming is required. | 145 | 359 | 38 | 80 HB | 29 % IACS |
1/8 hard | Lightly rolled — pick when flatness/stiffness for handling is needed but the part still sees moderate bending. | 275 | 372 | 28 | 85 HB | 28 % IACS |
Quarter hard | Pick for stamped parts with 90° bends across grain plus moderate spring-back control. | 330 | 400 | 18 | 105 HB | 28 % IACS |
H02Default Half hard | Most stocked general-purpose temper — good balance of strength and bendability for terminals, clips and washers. | 400 | 455 | 8 | 130 HB | 28 % IACS |
Three-quarter hard | Pick when higher yield is needed but full-hard bend cracking must be avoided. | 448 | 496 | 6 | 145 HB | 28 % IACS |
Full hard | Pick for flat stamped springs and contacts with only gentle forming, where high yield matters. | 483 | 524 | 4 | 158 HB | 28 % IACS |
Extra hard | Pick for high-force contact springs where forming is limited to large-radius bends with grain. | 524 | 565 | 3 | 170 HB | 28 % IACS |
Spring hard | Pick for spring contacts and diaphragms needing high elastic limit and low stress relaxation. | 565 | 600 | 3 | 180 HB | 28 % IACS |
H10This page Extra spring hard | Highest-strength rolled condition — pick only for flat or very lightly formed spring elements. | 593 | 634 | 2 | 188 HB | 28 % IACS |
What is C41300-H10?
C41300-H10 is C41300 supplied in the H10 condition — highest-strength rolled condition — pick only for flat or very lightly formed spring elements. C41300-H10 has a yield strength of 593 MPa (86 ksi) and a tensile strength of 634 MPa (92 ksi) — stronger than 94% of copper alloy grades. Elongation at break is 2% and the elastic modulus is 110 GPa (16 Msi). C41300-H10 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,005°C (1,841 °F). H02 is the default condition FabDigit quotes; H10 is available on request or by drawing note.
Advantages
- High strength — 593 MPa (86 ksi), better than 94% of copper alloy grades
Limitations
- Limited ductility — 2%, worse than 98% of copper alloy grades
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
- Limited formability — 12/100, worse than 85% of copper alloy grades
C41300-H10 properties
Typical room-temperature values for C41300-H10; 12 are specific to this condition. Other listed values are C41300 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C41300-H10 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,005°C (1,841 °F).
Mechanical12
C41300-H10 has a yield strength of 593 MPa (86 ksi) and a tensile strength of 634 MPa (92 ksi) — stronger than 94% of copper alloy grades. Elongation at break is 2% and the elastic modulus is 110 GPa (16 Msi).
Thermal6
C41300-H10 is rated for continuous service to 150°C (302 °F). It conducts heat at 120 W/m·K (69.3 BTU/hr·ft·°F), better than 66% of copper alloy grades. Thermal expansion is 18.4 µm/m·K (10.2 µin/in·°F).
Electrical3
C41300-H10 conducts electricity at 28 % IACS, better than 69% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C41300-H10 takes about 55 MJ of energy and emits 3.9 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 40%.
Manufacturability7
C41300-H10's machinability is poor (30/100, worse than 67% of copper alloy grades); weldability good (55/100); formability not recommended (12/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C41300-H10
Is C41300 easy to machine?
Unleaded tin brass — gummy, long chips; rate ≈30% of free-cutting brass, use sharp positive-rake tools, high speed and good lubrication.
Can C41300 be welded?
Excellent for soft soldering and brazing; resistance welding good, GTAW/GMAW only fair because of zinc fuming — vent and use Cu-Si or Cu-Sn filler.
Can C41300 be formed, bent or molded?
Excellent cold formability in OS tempers (deep draws, tight bends); in H04 and harder bend with grain and generous radii, and stress-relieve at ~250–275 °C to avoid ammonia SCC.
What surface finishes work on C41300?
Takes bright polish, tin, nickel, silver and gold plating readily; no anodizing — use lacquer or benzotriazole passivation to prevent tarnish.
C41300 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 |
|---|---|---|
| CuCu + named elements ≥ 99.7% (Ag countable as Cu) | 89 – 93 | 91 |
| Sn | 0.7 – 1.3 | 1 |
| Pbimpurity limit | ≤ 0.1 | — |
| Feimpurity limit | ≤ 0.05 | — |
| Znremainder, nominally ~8% | balance | — |
C41300-H10 — frequently asked
What is C41300-H10 used for?
C41300-H10 is typically used for electrical connectors, springs and terminals. In short: tin brass connector strip; formable at 400 MPa yield; not free-cutting.
What is the yield strength of C41300-H10?
C41300-H10 has a typical yield strength of 593 MPa (86 ksi) and a tensile strength of 634 MPa (92 ksi) — stronger than 94% of copper alloy grades. Strength varies by condition: see the 10 listed tempers.
Is C41300-H10 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 67% of copper alloy grades). Unleaded tin brass — gummy, long chips; rate ≈30% of free-cutting brass, use sharp positive-rake tools, high speed and good lubrication.
Can C41300-H10 be welded?
Yes — weldability is rated good (55/100). Excellent for soft soldering and brazing; resistance welding good, GTAW/GMAW only fair because of zinc fuming — vent and use Cu-Si or Cu-Sn filler.
What surface finishes work on C41300-H10?
Takes bright polish, tin, nickel, silver and gold plating readily; no anodizing — use lacquer or benzotriazole passivation to prevent tarnish.
Can C41300-H10 be formed, bent or molded?
Excellent cold formability in OS tempers (deep draws, tight bends); in H04 and harder bend with grain and generous radii, and stress-relieve at ~250–275 °C to avoid ammonia SCC.
What is the maximum service temperature of C41300-H10?
C41300-H10 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C41300-H02 and C41300-OS050?
H02 is the default condition — most stocked general-purpose temper — good balance of strength and bendability for terminals, clips and washers. OS050: softest commercial temper — pick for deep drawing, severe forming and re-drawn parts. Yield strength is 400 MPa in H02 versus 117 MPa in OS050.
Sources
- ASTM B36/B36M — Brass Plate, Sheet, Strip, and Rolled Bar — ASTM International (2018)
- ASTM B587 — Welded Brass Tube — ASTM International (2020)
- CDA Alloy Database — C41300 tin brass — Copper Development Association (2023)
- 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.