Uns C72900 C729 -

| Property | Value | |----------|-------| | Density | 0.318 lb/in³ (8.80 g/cm³) | | Electrical Conductivity | 6–10% IACS | | Thermal Conductivity | 25–35 W/m·K (at 20°C) | | Modulus of Elasticity | 18–19 Msi (124–131 GPa) | | Melting Range | 1900–2050°F (1040–1120°C) | | Magnetic Permeability | < 1.01 (non-magnetic) |

| Property | Typical Value (annealed) | Typical Value (H900) | |----------|--------------------------|----------------------| | Tensile strength | 620 MPa (90 ksi) | 1 380 MPa (200 ksi) | | Yield strength (0.2 % offset) | 415 MPa (60 ksi) | 1 240 MPa (180 ksi) | | Elongation (A) | 30 % | 10 % | | Hardness (HRB) | 70 HRB | 44‑48 HRC | | Modulus of elasticity | ~200 GPa (29 Msi) | – | | Density | 7.75 g/cm³ (0.28 lb/in³) | – | | Corrosion resistance | Comparable to 304/316 in many environments, superior in chlorides when properly aged | Similar, but higher strength may reduce ductility in aggressive media | uns c72900 c729

Not recommended for strong oxidizing acids (e.g., nitric) or ammonia-rich environments. | Property | Value | |----------|-------| | Density | 0

C729, ToughMet 3, Cu-15Ni-8Sn.