Copper Alloy C83600-M07
Heat-treated state
UNS C83600 · AISI/SAE 40
M07 = as continuous cast
Continuous-cast solid or hollow bar for machined bushings, glands and screw-machine parts — highest soundness, lowest porosity.
Values for the M07 condition
Other C83600 tempers and conditions
C83600 is listed in 5 conditions; see the grade overview at C83600.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As investment cast | For intricate near-net valve internals and hardware where dimensional accuracy beats maximum strength. | 110 | 241 | 25 | 58 HB | 15 % IACS |
M01Default As sand cast | Default condition: general-purpose sand-cast valve bodies, fittings and pump parts to ASTM B584. | 117 | 255 | 30 | 60 HB | 15 % IACS |
As centrifugally cast | Choose for rings, bushings, sleeves and flange blanks where a dense, sound-walled hollow shape is needed. | 124 | 262 | 28 | 62 HB | 15 % IACS |
As plaster cast | Higher-volume small fittings; faster chilling gives finer grain and slightly higher strength than sand cast. | 138 | 269 | 25 | 65 HB | 15 % IACS |
M07This page As continuous cast | Continuous-cast solid or hollow bar for machined bushings, glands and screw-machine parts — highest soundness, lowest porosity. | 138 | 248 | 20 | 62 HB | 15 % IACS |
What is C83600-M07?
C83600-M07 is C83600 heat treated to M07 — continuous-cast solid or hollow bar for machined bushings, glands and screw-machine parts — highest soundness, lowest porosity. C83600-M07 has a yield strength of 138 MPa (20 ksi) and a tensile strength of 248 MPa (36 ksi) — weaker than 76% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 83 GPa (12 Msi). C83600-M07 has a density of 8.83 g/cm³ (0.319 lb/in³), heavier than 65% of copper alloy grades. It melts at 854°C (1,569 °F). M01 is the default condition FabDigit quotes; M07 is available on request or by drawing note.
Advantages
- Easy to machine — 86/100, better than 95% of copper alloy grades
Limitations
- Low stiffness — 83 GPa (12 Msi), worse than 96% of copper alloy grades
- Difficult to weld — 20/100, worse than 88% of copper alloy grades
- Low strength — 138 MPa (20 ksi), worse than 76% of copper alloy grades
C83600-M07 properties
Typical room-temperature values for C83600-M07; 21 are specific to this condition. Other listed values are C83600 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C83600-M07 has a density of 8.83 g/cm³ (0.319 lb/in³), heavier than 65% of copper alloy grades. It melts at 854°C (1,569 °F).
Mechanical12
C83600-M07 has a yield strength of 138 MPa (20 ksi) and a tensile strength of 248 MPa (36 ksi) — weaker than 76% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 83 GPa (12 Msi).
Thermal6
C83600-M07 is rated for continuous service to 200°C (392 °F). It conducts heat at 72 W/m·K (41.6 BTU/hr·ft·°F), worse than 52% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
C83600-M07 conducts electricity at 15 % IACS, worse than 54% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 68% of copper alloy grades.
Sustainability4
Producing a kilogram of C83600-M07 takes about 50 MJ of energy and emits 3.6 kg of CO₂ — less than 89% of copper alloy grades. Typical recycled content is 85%.
Manufacturability7
C83600-M07's machinability is excellent (86/100, better than 95% of copper alloy grades); weldability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C83600-M07
Is C83600 easy to machine?
Free-cutting thanks to the lead phase (~84 % of C36000): use sharp positive-rake carbide or HSS, high speed, light feed, and expect short chips and excellent thread/bore finish.
Can C83600 be welded?
Not weldable in practice — lead causes hot cracking and porosity; join by soldering (excellent), silver brazing (good) or mechanical/threaded joints, and repair defects with braze filler rather than arc welding.
Can C83600 be formed, bent or molded?
Casting-only alloy with excellent fluidity and pressure tightness in green sand, no-bake, permanent mould, investment and continuous casting; use generous risers to avoid interdendritic shrinkage in heavy sections.
What surface finishes work on C83600?
Takes bright nickel/chrome and tin plating well after thorough degreasing and Pb-smear removal; can be buffed, chemically or thermally patinated, and is usually lacquered or benzotriazole-passivated rather than anodized.
C83600 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 ≥ 99.3 % | 84 – 86 | 85 |
| Sn | 4 – 6 | 5 |
| Pbfree-machining phase; excludes potable-water use under low-lead rules | 4 – 6 | 5 |
| Fe | ≤ 0.3 | — |
| Sb | ≤ 0.25 | — |
| Niincl. Co | ≤ 1 | — |
| S | ≤ 0.08 | — |
| P | ≤ 0.05 | — |
| Al | ≤ 0.01 | — |
| Si | ≤ 0.01 | — |
| Zn | ≥ 4 (balance) | — |
C83600-M07 — frequently asked
What is C83600-M07 used for?
C83600-M07 is typically used for water valves, pump bodies, plumbing fittings and meter housings. In short: industry-standard red brass; 85-5-5-5 valve alloy; excellent pressure tightness.
What is the yield strength of C83600-M07?
C83600-M07 has a typical yield strength of 138 MPa (20 ksi) and a tensile strength of 248 MPa (36 ksi) — weaker than 76% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is C83600-M07 easy to machine?
Yes — machinability is rated excellent (86/100, better than 95% of copper alloy grades). Free-cutting thanks to the lead phase (~84 % of C36000): use sharp positive-rake carbide or HSS, high speed, light feed, and expect short chips and excellent thread/bore finish.
Can C83600-M07 be welded?
Not readily — weldability is rated poor (20/100). Not weldable in practice — lead causes hot cracking and porosity; join by soldering (excellent), silver brazing (good) or mechanical/threaded joints, and repair defects with braze filler rather than arc welding.
What surface finishes work on C83600-M07?
Takes bright nickel/chrome and tin plating well after thorough degreasing and Pb-smear removal; can be buffed, chemically or thermally patinated, and is usually lacquered or benzotriazole-passivated rather than anodized.
Can C83600-M07 be formed, bent or molded?
Casting-only alloy with excellent fluidity and pressure tightness in green sand, no-bake, permanent mould, investment and continuous casting; use generous risers to avoid interdendritic shrinkage in heavy sections.
What is the maximum service temperature of C83600-M07?
C83600-M07 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 C83600-M01 and C83600-M05?
M01 is the default condition — default condition: general-purpose sand-cast valve bodies, fittings and pump parts to ASTM B584. M05: higher-volume small fittings; faster chilling gives finer grain and slightly higher strength than sand cast. Yield strength is 117 MPa in M01 versus 138 MPa in M05.
Sources
- ASTM B584 — Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM International (2018)
- ASTM B271 — Copper-Base Alloy Centrifugal Castings — ASTM International (2020)
- ASTM B763 — Copper Alloy Sand Castings for Valve Applications / B763 investment castings — ASTM International (2020)
- CDA Alloy Datasheet C83600 (copper.org) — Copper Development Association (2024)
- ASM Handbook Vol.2 — Properties of Copper and Copper Alloys — ASM International (1990)
- GB/T 1176 — (ZCuSn5Pb5Zn5) — SAC (2013)
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.