Copper Alloy C10800
UNS C10800
C10800 is an oxygen-free, phosphorus-deoxidized copper with phosphorus at the top of the low-P range, part of the wrought C10000–C19999 family, pairing 98 % IACS electrical and 391 W/m·K thermal conductivity with good fusion weldability.
Reference datasheet — C10800 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 OS050 condition
C10800 tempers and conditions
C10800 is supplied in 10 conditions, soft to hard. OS050 is the default FabDigit quotes; the values on this page are for it.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
OS050Default Annealed to 0.050 mm grain size | Softest commercial condition; pick for deep drawing, bending, spinning and maximum conductivity. | 69 | 221 | 45 | 45 HB | 98 % IACS |
Hot rolled and annealed | Thick plate/bar annealed after hot rolling for uniform soft properties and maximum conductivity in heavy sections. | 69 | 221 | 45 | 45 HB | 98 % IACS |
As hot rolled | Mill hot-rolled plate/bar bought for bus-bar and machined blanks where surface finish and light work-hardening are acceptable. | 90 | 235 | 40 | 50 HB | 97 % IACS |
1/8 hard | Slight cold work for flatness and easier handling while retaining most of the annealed ductility. | 170 | 250 | 30 | 60 HB | 97 % IACS |
Light drawn | Light-drawn tube temper: bendable by hand tooling yet stronger than annealed — refrigeration and plumbing tube. | 195 | 255 | 25 | 70 HB | 97 % IACS |
Quarter hard | Good compromise of moderate strength with useful bending ductility for formed electrical parts. | 205 | 262 | 25 | 70 HB | 97 % IACS |
Half hard | Most common stock temper for strip, sheet and bus-bar needing strength plus mild forming. | 250 | 290 | 14 | 85 HB | 96 % IACS |
Hard drawn | Hard-drawn tube and rod for pressure lines and straight runs needing self-support; bend only with proper tooling. | 275 | 315 | 8 | 90 HB | 95 % IACS |
Full hard | Choose where stiffness and strength matter more than formability — flat bus-bar, contacts, machined parts. | 310 | 345 | 6 | 95 HB | 95 % IACS |
Spring hard | Heavily cold-worked strip/wire for springy contacts and clips where copper-level conductivity is required. | 345 | 380 | 4 | 100 HB | 94 % IACS |
What is C10800?
C10800 is an oxygen-free, phosphorus-deoxidized copper with phosphorus at the top of the low-P range, part of the wrought C10000–C19999 family, pairing 98 % IACS electrical and 391 W/m·K thermal conductivity with good fusion weldability. It is specified as tube, strip and rod where copper must be welded or brazed without the hydrogen embrittlement risk of tough-pitch grades; annealed properties are 221 MPa tensile, 69 MPa yield, 45 % elongation and 45 HB. Strength and machinability (28 rating) are low and service is limited to about 250 °C. C12200 (DHP) is the usual lower-cost substitute when maximum conductivity is not required. C10800 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F). C10800 has a yield strength of 69 MPa (10 ksi) and a tensile strength of 221 MPa (32.1 ksi) — weaker than 96% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 117 GPa (17 Msi).
What is C10800 used for?
- Refrigeration and air-conditioning tubing
- Welded conductor assemblies
- Brazed heat-exchanger tube
- Busbar and electrical connector strip
- Welded pressure tubing
- Deep-drawn cups and shells
Advantages
- Conducts heat well — 391 W/m·K (225.9 BTU/hr·ft·°F), better than 98% of copper alloy grades
- High electrical conductivity — 98 % IACS, better than 94% of copper alloy grades
- Forms and bends easily — 95/100, better than 94% of copper alloy grades
- Readily welded — 80/100, better than 93% of copper alloy grades
- Polishes to a fine finish — 85/100, better than 92% of copper alloy grades
Limitations
- Low strength — 69 MPa (10 ksi), worse than 96% of copper alloy grades
C10800 properties
Typical room-temperature values for C10800-OS050; bars are the position among copper alloy grades.
Physical3
C10800 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Mechanical12
C10800 has a yield strength of 69 MPa (10 ksi) and a tensile strength of 221 MPa (32.1 ksi) — weaker than 96% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C10800 is rated for continuous service to 250°C (482 °F). It conducts heat at 391 W/m·K (225.9 BTU/hr·ft·°F), better than 98% of copper alloy grades. Thermal expansion is 17.7 µm/m·K (9.83 µin/in·°F).
Electrical3
C10800 conducts electricity at 98 % IACS, better than 94% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C10800 takes about 57 MJ of energy and emits 3.6 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 15%.
Manufacturability7
C10800's machinability is poor (28/100, worse than 78% of copper alloy grades); weldability very good (80/100); formability excellent (95/100).
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. C10800 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C10800
Is C10800 easy to machine?
Gummy and stringy — use sharp, high-rake tools, high speed, generous coolant; work in H02/H04 temper for cleaner chips, and expect ~20% of AISI 1212 rates.
Can C10800 be welded?
GTAW/GMAW readily with preheat on thick sections; phosphorus deoxidation avoids the hydrogen embrittlement seen in tough-pitch copper, but high conductivity demands high heat input.
Can C10800 be formed, bent or molded?
Excellent cold formability in OS050/O25 (deep draw, spin, tube bend); interanneal at 400–600 °C when cumulative reduction exceeds ~60%.
C10800 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 |
|---|---|---|
| PPhosphorus deoxidized, low-residual range | 0.01 | 0.01 |
| CuCu + Ag, min 99.95% including the P content per CDA/ASTM registration; oxygen-free | ≥ 99.95 (balance) |
What surface finishes work on C10800?
Not anodizable — bright-dip/pickle then lacquer, or electroplate tin, nickel or silver for tarnish and contact resistance control; takes a high polish easily.
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 C10800 cost?
C10800 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.
C10800 — frequently asked
What is C10800 used for?
C10800 is typically used for refrigeration and air-conditioning tubing, welded conductor assemblies, brazed heat-exchanger tube, busbar and electrical connector strip, welded pressure tubing and deep-drawn cups and shells. In short: weldable high-conductivity copper; low-phosphorus oxygen-free grade; excellent deep-draw formability.
What is the yield strength of C10800?
C10800 has a typical yield strength of 69 MPa (10 ksi) and a tensile strength of 221 MPa (32.1 ksi) — weaker than 96% of copper alloy grades. Strength varies by condition: see the 10 listed tempers.
Is C10800 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 78% of copper alloy grades). Gummy and stringy — use sharp, high-rake tools, high speed, generous coolant; work in H02/H04 temper for cleaner chips, and expect ~20% of AISI 1212 rates.
Can C10800 be welded?
Yes — weldability is rated very good (80/100). GTAW/GMAW readily with preheat on thick sections; phosphorus deoxidation avoids the hydrogen embrittlement seen in tough-pitch copper, but high conductivity demands high heat input.
What surface finishes work on C10800?
Not anodizable — bright-dip/pickle then lacquer, or electroplate tin, nickel or silver for tarnish and contact resistance control; takes a high polish easily.
Can C10800 be formed, bent or molded?
Excellent cold formability in OS050/O25 (deep draw, spin, tube bend); interanneal at 400–600 °C when cumulative reduction exceeds ~60%.
What is the maximum service temperature of C10800?
C10800 is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C10800-OS050 and C10800-H08?
OS050 is the default condition — softest commercial condition; pick for deep drawing, bending, spinning and maximum conductivity. H08: heavily cold-worked strip/wire for springy contacts and clips where copper-level conductivity is required. Yield strength is 69 MPa in OS050 versus 345 MPa in H08.
How much does C10800 cost?
C10800 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 B152/B152M — Copper Sheet, Strip, Plate and Rolled Bar — ASTM International (2019)
- ASTM B280 — Seamless Copper Tube for ACR Field Service — ASTM International (2020)
- CDA Alloy Database — C10800 (oxygen-free, low phosphorus copper) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- GB/T 5231 — (TU1/TUP equivalents) — SAC (2022)
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.