Copper Alloy C22000-H10
Supply condition
UNS C22000 · ASTM B36 · EN CW501L, CuZn10 · JIS C2200 · GB H90
H10 = extra spring hard
Maximum cold-worked strength available in thin strip; only flat or very gentle radii.
Values for the H10 condition
Other C22000 tempers and conditions
C22000 is listed in 9 conditions; see the grade overview at C22000.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Pick for deep drawing, spinning, stamping of complex decorative parts and for maximum ductility. | 83 | 275 | 45 | 48 HB | 44 % IACS |
As hot rolled | Mill temper of hot-rolled plate and bar; essentially recrystallized soft condition with low strength and high ductility. | 85 | 260 | 45 | 52 HB | 44 % IACS |
Quarter hard | Use when moderate forming is still required but annealed material is too soft/limp. | 215 | 305 | 35 | 90 HB | 44 % IACS |
Half hard | General-purpose stock temper: balances bendability with useful strength for hardware and nameplates. | 280 | 340 | 25 | 105 HB | 43 % IACS |
Three-quarter hard | Cold-rolled to roughly 29% reduction, giving strength between half-hard and full-hard with limited remaining bend ductility. | 310 | 370 | 8 | 115 HB | 43 % IACS |
Full hard | Choose for flat springs, clips and parts needing stiffness with only simple bends. | 350 | 400 | 6 | 130 HB | 42 % IACS |
Extra hard | For flat parts needing higher strength than full hard with essentially no forming. | 390 | 435 | 5 | 145 HB | 42 % IACS |
Spring hard | Spring strip/wire temper for contacts and light springs where color and solderability matter. | 420 | 470 | 4 | 155 HB | 42 % IACS |
H10This page Extra spring hard | Maximum cold-worked strength available in thin strip; only flat or very gentle radii. | 450 | 495 | 3 | 163 HB | 42 % IACS |
What is C22000-H10?
C22000-H10 is C22000 supplied in the H10 condition — maximum cold-worked strength available in thin strip; only flat or very gentle radii. C22000-H10 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 495 MPa (71.8 ksi) — stronger than 86% of copper alloy grades. Elongation at break is 3% and the elastic modulus is 117 GPa (17 Msi). C22000-H10 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,020°C (1,868 °F). O is the default condition FabDigit quotes; H10 is available on request or by drawing note.
Advantages
- Polishes to a fine finish — 85/100, better than 92% of copper alloy grades
- High strength — 450 MPa (65.3 ksi), better than 86% of copper alloy grades
- Conducts heat well — 180 W/m·K (104 BTU/hr·ft·°F), better than 75% of copper alloy grades
- High electrical conductivity — 42 % IACS, better than 75% of copper alloy grades
Limitations
- Limited ductility — 3%, worse than 97% of copper alloy grades
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
- Limited formability — 18/100, worse than 75% of copper alloy grades
C22000-H10 properties
Typical room-temperature values for C22000-H10; 20 are specific to this condition. Other listed values are C22000 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C22000-H10 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,020°C (1,868 °F).
Mechanical11
C22000-H10 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 495 MPa (71.8 ksi) — stronger than 86% of copper alloy grades. Elongation at break is 3% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C22000-H10 is rated for continuous service to 150°C (302 °F). It conducts heat at 180 W/m·K (104 BTU/hr·ft·°F), better than 75% of copper alloy grades. Thermal expansion is 18.4 µm/m·K (10.2 µin/in·°F).
Electrical3
C22000-H10 conducts electricity at 42 % IACS, better than 75% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 68% of copper alloy grades.
Sustainability4
Producing a kilogram of C22000-H10 takes about 57 MJ of energy and emits 3.9 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 40%.
Manufacturability7
C22000-H10's machinability is fair (42/100, better than 59% of copper alloy grades); weldability fair (40/100); formability poor (18/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C22000-H10
Is C22000 easy to machine?
Gummy single-phase alpha brass (≈20% of free-cutting brass): use sharp positive-rake tools, high speed, light feed and generous coolant; expect long stringy chips.
Can C22000 be welded?
Best joined by brazing or soldering; resistance and GTAW/GMAW welding are fair with matched or silicon-bronze filler, oxyacetylene welding is not recommended due to zinc fume loss.
Can C22000 be formed, bent or molded?
Excellent cold formability — deep draws, spinning and severe bends in O temper; interanneal ~425–650 °C and stress-relieve cold-worked parts (~275 °C) to avoid ammonia SCC.
What surface finishes work on C22000?
Takes a bright gilding-gold polish; commonly lacquered, clear-coated, chemically patinated, or electroplated with Ni/Cr/Au — anodizing does not apply.
C22000 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 ≥ 99.8 | 89 – 91 | 90 |
| Pbimpurity limit | ≤ 0.05 | — |
| Feimpurity limit | ≤ 0.05 | — |
| Zn | balance | — |
C22000-H10 — frequently asked
What is C22000-H10 used for?
C22000-H10 is typically used for jewelry components, decorative metalwork and trim, badges and nameplates, builders' hardware, electrical terminals and contacts and flexible metal hose. In short: ductile commercial bronze.
What is the yield strength of C22000-H10?
C22000-H10 has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 495 MPa (71.8 ksi) — stronger than 86% of copper alloy grades. Strength varies by condition: see the 9 listed tempers.
Is C22000-H10 easy to machine?
Not especially — machinability is rated fair (42/100, better than 59% of copper alloy grades). Gummy single-phase alpha brass (≈20% of free-cutting brass): use sharp positive-rake tools, high speed, light feed and generous coolant; expect long stringy chips.
Can C22000-H10 be welded?
With care — weldability is rated fair (40/100). Best joined by brazing or soldering; resistance and GTAW/GMAW welding are fair with matched or silicon-bronze filler, oxyacetylene welding is not recommended due to zinc fume loss.
What surface finishes work on C22000-H10?
Takes a bright gilding-gold polish; commonly lacquered, clear-coated, chemically patinated, or electroplated with Ni/Cr/Au — anodizing does not apply.
Can C22000-H10 be formed, bent or molded?
Excellent cold formability — deep draws, spinning and severe bends in O temper; interanneal ~425–650 °C and stress-relieve cold-worked parts (~275 °C) to avoid ammonia SCC.
What is the maximum service temperature of C22000-H10?
C22000-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 C22000-O and C22000-H10?
O is the default condition — pick for deep drawing, spinning, stamping of complex decorative parts and for maximum ductility. H10: maximum cold-worked strength available in thin strip; only flat or very gentle radii. Yield strength is 83 MPa in O versus 450 MPa in H10.
Can FabDigit make parts in C22000-H10?
Yes — C22000-H10 is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B36/B36M Brass Plate, Sheet, Strip and Rolled Bar — ASTM International (2018)
- ASTM B134/B134M Brass Wire — ASTM International (2015)
- CDA Alloy Database — C22000 Commercial Bronze 90% — 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.