Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
Sources2 documents: Cleveland-Cliffs, Steel Construction Institute
Values for
Wrought. Type 304, annealed flat-rolled (Cleveland-Cliffs 304/304L Product Data Bulletin, May 2021); Poisson's ratio from the Nickel Institute/SCI structural stainless design manual
1
304/304L Stainless Steel Product Data Bulletin (2021)Cleveland-CliffsYield strength: typical, annealed, 70 °F (21 °C)Ultimate tensile strength: typical, annealed, 70 °F (21 °C)Elongation at break: typical, annealed, in 2 in. (50.8 mm)Young's modulus (stiffness): typical, in tensionDensity: typicalThermal conductivity: at 100 °CThermal expansion: mean, 0–100 °CSpecific heat: mean, 0–100 °CMelting point: melting rangeMax service temperature: continuous, oxidation (scaling) limit in air
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Design Manual for Structural Stainless Steel, 4th Edition (P413)Steel Construction Institutearchived copyPoisson's ratio: design value (structural stainless steels)
Stainless Steel 304 has a thermal conductivity of 16.2 W/m·K (9.36 BTU/hr·ft·°F). Basis: at 100 °C. Source: Cleveland-Cliffs, 304/304L Stainless Steel Product Data Bulletin (2021).
Specific heat of Stainless Steel 304
The specific heat capacity of Stainless Steel 304 is 500 J/kg·K (0.119 BTU/lb·°F). Basis: mean, 0–100 °C. Source: Cleveland-Cliffs, 304/304L Stainless Steel Product Data Bulletin (2021).
Coefficient of thermal expansion of Stainless Steel 304
Stainless Steel 304 expands 16.9 µm/m·K (9.39 µin/in·°F): a 100 mm part grows 84.5 µm over a 50 °C rise. Basis: mean, 0–100 °C. Source: Cleveland-Cliffs, 304/304L Stainless Steel Product Data Bulletin (2021).
Thermal diffusivity of Stainless Steel 304
Computed from the conductivity, density and specific heat (k / ρc): 4.03 mm²/s, how fast a temperature change spreads through it.
Melting point of Stainless Steel 304
Stainless Steel 304 melts at 1,399–1,454 °C (2,550–2,649 °F). Basis: melting range. Source: Cleveland-Cliffs, 304/304L Stainless Steel Product Data Bulletin (2021).
Maximum service temperature of Stainless Steel 304
The maximum service temperature of Stainless Steel 304 is 899 °C (1,650 °F). Basis: continuous, oxidation (scaling) limit in air. Source: Cleveland-Cliffs, 304/304L Stainless Steel Product Data Bulletin (2021).