Copper Alloy C22600-H02
Supply condition · default condition
UNS C22600
H02 = half hard
Default stock condition: good balance of stiffness for stamped/blanked decorative parts with useful residual ductility.
Values for the H02 condition
Other C22600 tempers and conditions
C22600 is listed in 8 conditions; see the grade overview at C22600.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for deep drawing, coining, spinning and heavy bending of jewelry blanks. | 100 | 290 | 45 | 58 HB | 41 % IACS |
Quarter hard | Pick when moderate bending or shallow forming is still needed but annealed material is too limp. | 276 | 359 | 25 | 90 HB | 40 % IACS |
H02DefaultThis page Half hard | Default stock condition: good balance of stiffness for stamped/blanked decorative parts with useful residual ductility. | 330 | 400 | 12 | 105 HB | 40 % IACS |
Three-quarter hard | Pick for flat stamped hardware needing higher yield strength with only light forming. | 359 | 435 | 8 | 118 HB | 40 % IACS |
Full hard | Pick for flat or lightly formed parts needing maximum strength with acceptable blanking behavior. | 400 | 462 | 5 | 130 HB | 39 % IACS |
Extra hard | Pick for stiff decorative strip, clips and light spring-like flat parts made without forming. | 448 | 517 | 4 | 145 HB | 39 % IACS |
Spring hard | Pick for flat springs, contacts and snap features where the gold color must be retained. | 483 | 552 | 3 | 155 HB | 38 % IACS |
Extra spring hard | Pick for the highest strength/stiffness available in this alloy; essentially no forming capability. | 503 | 579 | 3 | 162 HB | 38 % IACS |
What is C22600-H02?
C22600-H02 is C22600 supplied in the H02 condition — default stock condition: good balance of stiffness for stamped/blanked decorative parts with useful residual ductility. C22600-H02 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 12% and the elastic modulus is 117 GPa (17 Msi). C22600-H02 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).
Advantages
- Polishes to a fine finish — 90/100, better than 99% of copper alloy grades
- Forms and bends easily — 72/100, better than 82% of copper alloy grades
C22600-H02 properties
Typical room-temperature values for C22600-H02; 11 are specific to this condition. Other listed values are C22600 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C22600-H02 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).
Mechanical11
C22600-H02 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 12% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
C22600-H02 is rated for continuous service to 200°C (392 °F). It conducts heat at 172 W/m·K (99.4 BTU/hr·ft·°F), better than 74% of copper alloy grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
C22600-H02 conducts electricity at 40 % IACS, better than 74% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C22600-H02 takes about 58 MJ of energy and emits 3.8 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 50%.
Manufacturability8
C22600-H02's machinability is poor (32/100, worse than 57% of copper alloy grades); weldability good (55/100); formability very good (72/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C22600-H02
Is C22600 easy to machine?
Gummy, unleaded alpha brass — use sharp positive-rake tools, high speed, light feed and generous lubricant; expect roughly 30 % of free-cutting brass throughput.
Can C22600 be welded?
Solders and brazes superbly and resistance-welds well; fusion welding (GTAW) is only fair due to zinc fume/porosity, so mechanical or brazed joints are preferred.
Can C22600 be formed, bent or molded?
Excellent cold formability in O61/H01 — deep draws, coins, spins and stamps cleanly; interanneal near 425–650 °C and stress-relieve heavily worked parts to avoid ammonia SCC.
What surface finishes work on C22600?
Buffs to a bright warm-gold luster; not anodizable — protect with clear lacquer, or nickel/gold/rhodium electroplate, or chemically patinate for antique effects.
C22600 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 may include Ag | 86 – 89 | 87.5 |
| Pbimpurity limit | ≤ 0.05 | — |
| Feimpurity limit | ≤ 0.05 | — |
| Zn | balance | — |
C22600-H02 — frequently asked
What is C22600-H02 used for?
C22600-H02 is typically used for jewelry, decorative hardware and name plates. In short: warm gold-tone brass; excellent deep-draw formability; poor machining rating.
What is the yield strength of C22600-H02?
C22600-H02 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 69% of copper alloy grades. Strength varies by condition: see the 8 listed tempers.
Is C22600-H02 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 57% of copper alloy grades). Gummy, unleaded alpha brass — use sharp positive-rake tools, high speed, light feed and generous lubricant; expect roughly 30 % of free-cutting brass throughput.
Can C22600-H02 be welded?
Yes — weldability is rated good (55/100). Solders and brazes superbly and resistance-welds well; fusion welding (GTAW) is only fair due to zinc fume/porosity, so mechanical or brazed joints are preferred.
What surface finishes work on C22600-H02?
Buffs to a bright warm-gold luster; not anodizable — protect with clear lacquer, or nickel/gold/rhodium electroplate, or chemically patinate for antique effects.
Can C22600-H02 be formed, bent or molded?
Excellent cold formability in O61/H01 — deep draws, coins, spins and stamps cleanly; interanneal near 425–650 °C and stress-relieve heavily worked parts to avoid ammonia SCC.
What is the maximum service temperature of C22600-H02?
C22600-H02 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 C22600-H02 and C22600-O61?
H02 is the default condition — default stock condition: good balance of stiffness for stamped/blanked decorative parts with useful residual ductility. O61: pick for deep drawing, coining, spinning and heavy bending of jewelry blanks. Yield strength is 330 MPa in H02 versus 100 MPa in O61.
Sources
- C22600 Jewelry Bronze alloy data (properties, tempers, fabrication ratings) — Copper Development Association (copper.org) (2023)
- ASTM B36/B36M — Brass Plate, Sheet, Strip and Rolled Bar — ASTM International (2018)
- ASTM B134/B134M — Brass Wire — ASTM International (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.