Copper Alloy C35600-H02
Supply condition · default condition
UNS C35600
H02 = half hard
The general-purpose stocked temper: balanced strength, adequate bendability and top-rated screw-machine behaviour.
Values for the H02 condition
Other C35600 tempers and conditions
C35600 is listed in 7 conditions; see the grade overview at C35600.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Pick for maximum ductility when parts are deep-formed, staked or heavily bent after blanking. | 115 | 340 | 50 | 42 HRB | 26 % IACS |
Quarter hard | Use when moderate bending is still required but annealed strip is too soft to feed and blank cleanly. | 270 | 395 | 25 | 62 HRB | — |
H02DefaultThis page Half hard | The general-purpose stocked temper: balanced strength, adequate bendability and top-rated screw-machine behaviour. | 340 | 425 | 15 | 70 HRB | — |
Full hard | Choose for flat parts and washers needing high strength and stiffness with only gentle forming. | 415 | 490 | 7 | 80 HRB | — |
Extra hard | For stamped contacts and clips that must hold shape with minimal deflection; bending only with generous radii. | 450 | 540 | 5 | 84 HRB | — |
Spring hard | Spring-quality strip for leaf contacts and retaining members where elastic limit matters more than ductility. | 470 | 570 | 4 | 87 HRB | — |
Extra spring hard | Highest-strength strip temper; specify only for flat or very lightly formed spring parts, as bendability is nearly exhausted. | 490 | 595 | 3 | 89 HRB | — |
What is C35600-H02?
C35600-H02 is C35600 supplied in the H02 condition — the general-purpose stocked temper: balanced strength, adequate bendability and top-rated screw-machine behaviour. C35600-H02 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 425 MPa (61.6 ksi) — stronger than 71% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 97 GPa (14.1 Msi). C35600-H02 has a density of 8.47 g/cm³ (0.306 lb/in³), lighter than 68% of copper alloy grades. It melts at 885°C (1,625 °F).
Advantages
- Easy to machine — 100/100, better than 100% of copper alloy grades
Limitations
- Needs corrosion protection — 45/100, worse than 98% of copper alloy grades
- Low stiffness — 97 GPa (14.1 Msi), worse than 88% of copper alloy grades
- Difficult to weld — 20/100, worse than 88% of copper alloy grades
C35600-H02 properties
Typical room-temperature values for C35600-H02; 10 are specific to this condition. Other listed values are C35600 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C35600-H02 has a density of 8.47 g/cm³ (0.306 lb/in³), lighter than 68% of copper alloy grades. It melts at 885°C (1,625 °F).
Mechanical12
C35600-H02 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 425 MPa (61.6 ksi) — stronger than 71% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 97 GPa (14.1 Msi).
Thermal6
C35600-H02 is rated for continuous service to 180°C (356 °F). It conducts heat at 115 W/m·K (66.4 BTU/hr·ft·°F), better than 61% of copper alloy grades. Thermal expansion is 20.5 µm/m·K (11.4 µin/in·°F).
Electrical3
C35600-H02 conducts electricity at 26 % IACS, better than 63% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 98% of copper alloy grades.
Sustainability4
Producing a kilogram of C35600-H02 takes about 58 MJ of energy and emits 3.6 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 70%.
Manufacturability8
C35600-H02's machinability is excellent (100/100, better than 100% of copper alloy grades); weldability poor (20/100); formability fair (45/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C35600-H02
Is C35600 easy to machine?
Benchmark free-cutting behaviour — 100% rating, high speeds with neutral-to-negative rake tooling, short chips, minimal tool wear.
Can C35600 be welded?
Not recommended for fusion welding (lead causes hot cracking); join by soft soldering (excellent) or silver brazing with care.
Can C35600 be formed, bent or molded?
Cold bend in the O60/H01 tempers along or across grain with radii ≥1t; hard tempers crack easily and hot working is prohibited by the lead phase.
What surface finishes work on C35600?
Takes bright dip, benzotriazole/lacquer, nickel-chrome or tin plating well; polish to a satin-bright finish, mirror finish limited by lead inclusions.
C35600 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 |
|---|---|---|
| Cumay include Ag | 60 – 63 | 61.5 |
| Pbfree-machining phase | 2 – 3 | 2.5 |
| Fe | ≤ 0.15 | — |
| Zn | balance | — |
C35600-H02 — frequently asked
What is C35600-H02 used for?
C35600-H02 is typically used for precision machined parts, fittings and small fasteners. In short: benchmark free-cutting brass; high-volume screw-machine grade; not fusion weldable.
What is the yield strength of C35600-H02?
C35600-H02 has a typical yield strength of 340 MPa (49.3 ksi) and a tensile strength of 425 MPa (61.6 ksi) — stronger than 71% of copper alloy grades. Strength varies by condition: see the 7 listed tempers.
Is C35600-H02 easy to machine?
Yes — machinability is rated excellent (100/100, better than 100% of copper alloy grades). Benchmark free-cutting behaviour — 100% rating, high speeds with neutral-to-negative rake tooling, short chips, minimal tool wear.
Can C35600-H02 be welded?
Not readily — weldability is rated poor (20/100). Not recommended for fusion welding (lead causes hot cracking); join by soft soldering (excellent) or silver brazing with care.
What surface finishes work on C35600-H02?
Takes bright dip, benzotriazole/lacquer, nickel-chrome or tin plating well; polish to a satin-bright finish, mirror finish limited by lead inclusions.
Can C35600-H02 be formed, bent or molded?
Cold bend in the O60/H01 tempers along or across grain with radii ≥1t; hard tempers crack easily and hot working is prohibited by the lead phase.
What is the maximum service temperature of C35600-H02?
C35600-H02 is rated for continuous use to about 180°C (356 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C35600-H02 and C35600-O60?
H02 is the default condition — the general-purpose stocked temper: balanced strength, adequate bendability and top-rated screw-machine behaviour. O60: pick for maximum ductility when parts are deep-formed, staked or heavily bent after blanking. Yield strength is 340 MPa in H02 versus 115 MPa in O60.
Sources
- ASTM B36/B36M — Brass Plate, Sheet, Strip and Rolled Bar — ASTM International (2018)
- ASTM B121/B121M — Leaded Brass Plate, Sheet, Strip and Rolled Bar — ASTM International (2020)
- CDA Alloy Database — C35600 Extra-High-Leaded Brass — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- GB/T 2040 / GB/T 2059 — SAC (2017)
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.