Copper Alloy C97600-M07
Heat-treated state
UNS C97600
M07 = as continuous cast
Continuous-cast bar/tube stock for screw-machine parts: finest structure, highest strength and best machined surface.
Values for the M07 condition
Other C97600 tempers and conditions
C97600 is listed in 4 conditions; see the grade overview at C97600.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01Default As sand cast | Standard ASTM B584 sand-cast condition for valve bodies, fittings and food-machinery parts. | 165 | 310 | 20 | 80 HB | 4.5 % IACS |
As pressure die cast | Permanent-mold pours for repeat small parts needing tighter tolerances than sand casting. | 175 | 325 | 18 | 85 HB | 4.5 % IACS |
As centrifugally cast | Pick for dense, porosity-free bushings, sleeves and rings; slightly higher strength than sand cast. | 180 | 330 | 18 | 85 HB | 4.5 % IACS |
M07This page As continuous cast | Continuous-cast bar/tube stock for screw-machine parts: finest structure, highest strength and best machined surface. | 195 | 345 | 15 | 90 HB | 4.5 % IACS |
What is C97600-M07?
C97600-M07 is C97600 heat treated to M07 — continuous-cast bar/tube stock for screw-machine parts: finest structure, highest strength and best machined surface. C97600-M07 has a yield strength of 195 MPa (28.3 ksi) and a tensile strength of 345 MPa (50 ksi) — weaker than 56% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 138 GPa (20 Msi). C97600-M07 has a density of 8.86 g/cm³ (0.32 lb/in³), heavier than 68% of copper alloy grades. It melts at 1,108°C (2,026 °F). M01 is the default condition FabDigit quotes; M07 is available on request or by drawing note.
Advantages
- Stiff — 138 GPa (20 Msi), better than 95% of copper alloy grades
- Easy to machine — 72/100, better than 79% of copper alloy grades
- High service temperature — 260°C (500 °F), better than 75% of copper alloy grades
Limitations
- Poor heat conductor — 26 W/m·K (15 BTU/hr·ft·°F), worse than 98% of copper alloy grades
- Low electrical conductivity — 4.5 % IACS, worse than 98% of copper alloy grades
- Limited formability — 10/100, worse than 89% of copper alloy grades
- High embodied carbon — 5.5 kg CO₂/kg, worse than 89% of copper alloy grades
- Difficult to weld — 25/100, worse than 78% of copper alloy grades
C97600-M07 properties
Typical room-temperature values for C97600-M07; 21 are specific to this condition. Other listed values are C97600 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C97600-M07 has a density of 8.86 g/cm³ (0.32 lb/in³), heavier than 68% of copper alloy grades. It melts at 1,108°C (2,026 °F).
Mechanical13
C97600-M07 has a yield strength of 195 MPa (28.3 ksi) and a tensile strength of 345 MPa (50 ksi) — weaker than 56% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 138 GPa (20 Msi).
Thermal6
C97600-M07 is rated for continuous service to 260°C (500 °F). It conducts heat at 26 W/m·K (15 BTU/hr·ft·°F), worse than 98% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C97600-M07 conducts electricity at 4.5 % IACS, worse than 98% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of C97600-M07 takes about 78 MJ of energy and emits 5.5 kg of CO₂ — more than 90% of copper alloy grades. Typical recycled content is 45%.
Manufacturability7
C97600-M07's machinability is very good (72/100, better than 79% of copper alloy grades); weldability poor (25/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C97600-M07
Is C97600 easy to machine?
Free-machining thanks to 3–5 % Pb — rating ~70 % of C36000; use sharp positive-rake tools, moderate speeds and good chip breaking; continuous-cast stock gives the best finish.
Can C97600 be welded?
Fusion welding is not recommended (lead causes hot cracking and porosity); join by soft soldering or silver brazing, and preheat/repair-braze castings rather than arc weld.
Can C97600 be formed, bent or molded?
Casting alloy only — wide freezing range needs good gating, risers and directional solidification; sand, permanent-mold, centrifugal and continuous casting are all practised.
What surface finishes work on C97600?
Takes a bright silver-white polish and accepts nickel/chrome or tin plating; passivation is unnecessary, and pickling should avoid strong oxidising acids that leach lead.
C97600 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 |
|---|---|---|
| Cu | 63 – 67 | 65 |
| Niincludes Co | 19 – 21.5 | 20 |
| Sn | 3.5 – 4.5 | 4 |
| Pbfree-machining phase; restricted in modern potable-water/food uses | 3 – 5 | 4 |
| Zn | 3 – 9 | 5 |
| Fe | ≤ 1.5 | — |
| Mn | ≤ 1 | — |
| Sb | ≤ 0.25 | — |
| Si | ≤ 0.15 | — |
| S | ≤ 0.08 | — |
| P | ≤ 0.05 | — |
| Al | ≤ 0.01 | — |
C97600-M07 — frequently asked
What is C97600-M07 used for?
C97600-M07 is typically used for dairy and food processing fittings, pump housings for food equipment, valve components and decorative hardware. In short: original "Dairy Metal" grade; food-acid resistant casting; 70 machinability rating.
What is the yield strength of C97600-M07?
C97600-M07 has a typical yield strength of 195 MPa (28.3 ksi) and a tensile strength of 345 MPa (50 ksi) — weaker than 56% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C97600-M07 easy to machine?
Yes — machinability is rated very good (72/100, better than 79% of copper alloy grades). Free-machining thanks to 3–5 % Pb — rating ~70 % of C36000; use sharp positive-rake tools, moderate speeds and good chip breaking; continuous-cast stock gives the best finish.
Can C97600-M07 be welded?
Not readily — weldability is rated poor (25/100). Fusion welding is not recommended (lead causes hot cracking and porosity); join by soft soldering or silver brazing, and preheat/repair-braze castings rather than arc weld.
What surface finishes work on C97600-M07?
Takes a bright silver-white polish and accepts nickel/chrome or tin plating; passivation is unnecessary, and pickling should avoid strong oxidising acids that leach lead.
Can C97600-M07 be formed, bent or molded?
Casting alloy only — wide freezing range needs good gating, risers and directional solidification; sand, permanent-mold, centrifugal and continuous casting are all practised.
What is the maximum service temperature of C97600-M07?
C97600-M07 is rated for continuous use to about 260°C (500 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C97600-M01 and C97600-M07?
M01 is the default condition — standard ASTM B584 sand-cast condition for valve bodies, fittings and food-machinery parts. M07: continuous-cast bar/tube stock for screw-machine parts: finest structure, highest strength and best machined surface. Yield strength is 165 MPa in M01 versus 195 MPa in M07.
Sources
- ASTM B584 — Standard Specification for 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)
- CDA Alloy Data Sheet C97600 (leaded nickel bronze / nickel silver) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials (cast copper 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.