Copper Alloy C36700-H02
Supply condition
UNS C36700 · ASTM B121
H02 = half hard
Choose for straight, stiff bar and strip needing the highest strength available in this alloy.
Values for the H02 condition
Other C36700 tempers and conditions
C36700 is listed in 6 conditions; see the grade overview at C36700.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Use when maximum ductility for bending, expanding or rolling-in of tubes is needed. | 125 | 360 | 50 | 90 HB | 28 % IACS |
As hot extruded | Pick for extruded bar, architectural shapes and forging stock where machining follows. | 140 | 370 | 48 | 100 HB | 28 % IACS |
As hot forged and air cooled | Condition of hot-forged valve bodies and hardware bodies straight off the press. | 140 | 370 | 45 | 100 HB | 28 % IACS |
M20Default As hot rolled | Standard condition for ASTM B171 condenser tube sheets and heavy plate; best combination of strength and machinability. | 145 | 380 | 45 | 105 HB | 28 % IACS |
Quarter hard | Light cold work for higher yield strength in flat products while keeping some bendability. | 275 | 425 | 25 | 125 HB | 27 % IACS |
H02This page Half hard | Choose for straight, stiff bar and strip needing the highest strength available in this alloy. | 345 | 470 | 18 | 145 HB | 27 % IACS |
What is C36700-H02?
C36700-H02 is C36700 supplied in the H02 condition — choose for straight, stiff bar and strip needing the highest strength available in this alloy. C36700-H02 has a yield strength of 345 MPa (50 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 73% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi). C36700-H02 has a density of 8.41 g/cm³ (0.304 lb/in³), lighter than 72% of copper alloy grades. It melts at 885°C (1,625 °F). M20 is the default condition FabDigit quotes; H02 is available on request or by drawing note.
Advantages
- Easy to machine — 65/100, better than 76% of copper alloy grades
Limitations
- Needs corrosion protection — 45/100, worse than 98% of copper alloy grades
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C36700-H02 properties
Typical room-temperature values for C36700-H02; 21 are specific to this condition. Other listed values are C36700 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C36700-H02 has a density of 8.41 g/cm³ (0.304 lb/in³), lighter than 72% of copper alloy grades. It melts at 885°C (1,625 °F).
Mechanical15
C36700-H02 has a yield strength of 345 MPa (50 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 73% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal6
C36700-H02 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 20.8 µm/m·K (11.6 µin/in·°F).
Electrical3
C36700-H02 conducts electricity at 27 % IACS, better than 67% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 98% of copper alloy grades.
Sustainability4
Producing a kilogram of C36700-H02 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 70%.
Manufacturability7
C36700-H02's machinability is good (65/100, better than 76% of copper alloy grades); weldability poor (25/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C36700-H02
Is C36700 easy to machine?
Free-cutting at ~60 % of C36000 — use sharp, high-rake carbide or HSS tools, light feeds and flood coolant; chips break well thanks to the lead.
Can C36700 be welded?
Arc and gas welding are not recommended (lead cracking, zinc fume); join by soft soldering or silver brazing with good ventilation.
Can C36700 be formed, bent or molded?
Excellent hot working at 620–760 °C (forging, extrusion, hot rolling); cold formability is limited by the β phase — anneal at 425–600 °C between severe operations.
What surface finishes work on C36700?
Takes a bright mechanical polish and standard brass lacquer, chromate or Ni/Cr plating; stress-relieve at ~275 °C before service in ammonia-bearing atmospheres.
C36700 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 |
|---|---|---|
| Cuincludes Ag when reported | 58 – 61 | 59.5 |
| Pbfree-machining addition | 0.25 – 0.7 | 0.5 |
| Fe | ≤ 0.15 | 0.05 |
| Sbdezincification inhibitor (antimonial grade) | 0.02 – 0.1 | 0.05 |
| Zn≈ 39–41 % | balance | — |
C36700-H02 — frequently asked
What is C36700-H02 used for?
C36700-H02 is typically used for architectural fittings, valve components and decorative extrusions. In short: mid-lead Muntz metal; free-cutting 60/40 brass; good hot forging alloy.
What is the yield strength of C36700-H02?
C36700-H02 has a typical yield strength of 345 MPa (50 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 73% of copper alloy grades. Strength varies by condition: see the 6 listed tempers.
Is C36700-H02 easy to machine?
Reasonably — machinability is rated good (65/100, better than 76% of copper alloy grades). Free-cutting at ~60 % of C36000 — use sharp, high-rake carbide or HSS tools, light feeds and flood coolant; chips break well thanks to the lead.
Can C36700-H02 be welded?
Not readily — weldability is rated poor (25/100). Arc and gas welding are not recommended (lead cracking, zinc fume); join by soft soldering or silver brazing with good ventilation.
What surface finishes work on C36700-H02?
Takes a bright mechanical polish and standard brass lacquer, chromate or Ni/Cr plating; stress-relieve at ~275 °C before service in ammonia-bearing atmospheres.
Can C36700-H02 be formed, bent or molded?
Excellent hot working at 620–760 °C (forging, extrusion, hot rolling); cold formability is limited by the β phase — anneal at 425–600 °C between severe operations.
What is the maximum service temperature of C36700-H02?
C36700-H02 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 C36700-M20 and C36700-H02?
M20 is the default condition — standard condition for ASTM B171 condenser tube sheets and heavy plate; best combination of strength and machinability. H02: choose for straight, stiff bar and strip needing the highest strength available in this alloy. Yield strength is 145 MPa in M20 versus 345 MPa in H02.
Sources
- ASTM B171/B171M — Copper-Alloy Plate and Sheet for Pressure Vessels, Condensers and Heat Exchangers — ASTM International (2018)
- ASTM B121/B121M — Leaded Brass Plate, Sheet, Strip and Rolled Bar — ASTM International (2020)
- CDA Alloy Database, C36500–C36800 leaded Muntz metal — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (copper alloys) — 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.