Nickel-chromium alloy, NICHROME V, annealed Page 1 of 3 (resistance alloy) Identification Designation ASTM Standard B344: "80Ni, 20Cr Alloy" (UNS No. N06003) EN name NiCr80 20 EN number 2.4869 UNS number N06003 Tradenames NICHROME V

General Properties Density 8.3e3 - 8.5e3 kg/m^3 Price * 22.2 - 24.5 EUR/kg

Composition overview Composition (summary) Ni/19-21Cr/<2.5Mn/.75-1.75Si/<1Fe/<.15C/<.01S Base Ni (Nickel)

Composition detail (metals, ceramics and glasses) C (carbon) 0 - 0.15 % Cr (chromium) 19 - 21 % Fe (iron) 0-1% Mn (manganese) 0-2.5% Ni (nickel) 73.6 - 80.3 % S (sulfur) 0 - 0.01 % Si (silicon) 0.75 - 1.75 %

Mechanical properties Young's modulus 205 - 220 GPa Flexural modulus * 205 - 220 GPa Shear modulus 70 - 82 GPa Bulk modulus * 155 - 185 GPa Poisson's ratio *0.28 - 0.3 Shape factor 27 Yield strength (elastic limit) 365 - 460 MPa Tensile strength 615 - 760 MPa Compressive strength * 365 - 460 MPa Flexural strength (modulus of rupture) * 365 - 460 MPa Elongation 20 - 35 % strain Hardness - Vickers 160 - 200 HV Hardness - Rockwell B *82 - 92 Hardness - Rockwell C *1 - 11 Hardness - Brinell * 156 - 193 MPa Fatigue strength at 10^7 cycles * 245 - 380 MPa Fatigue strength model (stress range) * 169 - 260 MPa Parameters: Stress Ratio = 0, Number of Cycles = 1e7 Fracture toughness * 120 - 150 MPa.m^0.5 Mechanical loss coefficient (tan delta) * 4e-4 - 6e-4

Thermal properties Melting point 1.39e3 - 1.43e3 °C Maximum service temperature * 937 - 1.15e3 °C

Values marked * are estimates. Granta Design provides no warranty for the accuracy of this data Nickel-chromium alloy, NICHROME V, annealed Page 2 of 3 (resistance alloy)

Minimum service temperature -273 °C Thermal conductivity 9-15W/m.°C Specific heat capacity 430 - 450 J/kg.°C Thermal expansion coefficient 12 - 14 µstrain/°C Latent heat of fusion * 275 - 300 kJ/kg

Processing properties Cold forming Good Hot forming Good Weldability - MIG Fair Weldability - plasma Fair Weldability - SAW Fair Weldability - TIG Fair

Electrical properties Electrical resistivity 102 - 114 µohm.cm Galvanic potential * -0.16 - -0.08 V

Magnetic properties (ambient temperature) Ferromagnetic?

Optical properties Transparency Opaque

Durability: flammability Flammability Non-flammable

Durability: fluids and sunlight Water (fresh) Excellent Water (salt) Excellent Weak acids Excellent Strong acids Acceptable Weak alkalis Excellent Strong alkalis Excellent Organic solvents Excellent UV radiation (sunlight) Excellent Oxidation at 500C Excellent

Corrosion resistance (relative to other metals) Pitting resistance equivalent number (PREN) 19 - 21 Pitting and crevice corrosion Medium (20-30) Intergranular (weld line) corrosion Restricted

Primary material production: energy, CO2 and water Embodied energy, primary production * 185 - 205 MJ/kg CO2 footprint, primary production * 11.6 - 12.8 kg/kg Water usage * 265 - 292 l/kg

Material processing: energy Casting energy * 10.4 - 11.5 MJ/kg Rough rolling, forging energy * 3.37 - 3.73 MJ/kg Extrusion, foil rolling energy * 6.46 - 7.14 MJ/kg Wire drawing energy * 23.5 - 25.9 MJ/kg Metal powder forming energy * 34.7 - 38.4 MJ/kg Vaporization energy * 1.15e4 - 1.27e4 MJ/kg Coarse machining energy (per unit wt removed) * 0.938 - 1.04 MJ/kg Fine machining energy (per unit wt removed) * 5.11 - 5.65 MJ/kg

Values marked * are estimates. Granta Design provides no warranty for the accuracy of this data Nickel-chromium alloy, NICHROME V, annealed Page 3 of 3 (resistance alloy)

Grinding energy (per unit wt removed) *9.74-10.8MJ/kg Non-conventional machining energy (per unit wt removed) * 115 - 127 MJ/kg

Material processing: CO2 footprint Casting CO2 * 0.783 - 0.866 kg/kg Rough rolling, forging CO2 * 0.253 - 0.28 kg/kg Extrusion, foil rolling CO2 * 0.485 - 0.536 kg/kg Wire drawing CO2 * 1.76 - 1.94 kg/kg Metal powder forming CO2 * 2.78 - 3.07 kg/kg Vaporization CO2 * 860 - 950 kg/kg Coarse machining CO2 (per unit wt removed) * 0.0704 - 0.0778 kg/kg Fine machining CO2 (per unit wt removed) * 0.383 - 0.424 kg/kg Grinding CO2 (per unit wt removed) * 0.731 - 0.808 kg/kg Non-conventional machining CO2 (per unit wt removed) * 8.6 - 9.5 kg/kg

Material recycling: energy, CO2 and recycle fraction Recycle Embodied energy, recycling * 31.7 - 35.1 MJ/kg CO2 footprint, recycling * 2.5 - 2.76 kg/kg Recycle fraction in current supply 28.9 - 31.9 % Downcycle Combust for energy recovery Landfill Biodegrade A renewable resource?

Notes Typical uses Heating elements; Resistors; Electronic parts; Warning All nickel compounds should be regarded as toxic. Some can cause cancer and/or fetal abnormalities. Reference sources Data compiled from multiple sources. See links to the References table. Standards with similar compositions ASTM B344(92) 80Ni-20Cr (USA)

Links ProcessUniverse Producers Reference Shape

Values marked * are estimates. Granta Design provides no warranty for the accuracy of this data