Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
Sources4 documents: American Institute of Steel Construction, bauforumstahl (ArcelorMittal), Ovako
Values for
Wrought. Generic structural steel, cited as ASTM A992 (the current US structural grade): ASTM A992 W-shapes; Fy/Fu specified minimums from AISC publications (AISC 360-16 Commentary; Modern Steel Construction); elastic constants AISC 360; physical constants from the bauforumstahl structural-steel EPD, which names A992 among covered product standards.
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Updating Standard Shape Material Properties Database for Design and ReliabilityAmerican Institute of Steel Constructionarchived copyYield strength: typical: mean of 20,295 A992 flange mill-test coupons (1998 SSPC survey), as reported by AISCUltimate tensile strength: typical: mean of 20,295 A992 flange mill-test coupons (1998 SSPC survey)Elongation at break: typical: mean of 24,847 A992 mill-test elongations, web and flange (1998 SSPC mill data), as reported by AISC
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ANSI/AISC 360-16 Specification for Structural Steel Buildings, with CommentaryAmerican Institute of Steel Constructionarchived copyYoung's modulus (stiffness): design value (AISC 360-16)Poisson's ratio: design value (AISC 360-16 Commentary)
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Environmental Product Declaration: Structural Steel Sections and Merchant Bars (2023)bauforumstahl (ArcelorMittal)archived copyDensity: nominal (constructional data)Thermal conductivity: nominal at 20 °CThermal expansion: nominal (constructional data, no temperature range stated)
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S275JR Steel GradeOvakoSpecific heat: base material: EN S275JR unalloyed structural steel (the EN counterpart of A36), typical, 50/100 °C
Steel has a thermal conductivity of 48 W/m·K (27.7 BTU/hr·ft·°F). Basis: nominal at 20 °C. Source: bauforumstahl (ArcelorMittal), Environmental Product Declaration: Structural Steel Sections and Merchant Bars (2023)archived copy.
Specific heat of Steel
The specific heat capacity of Steel is 460–480 J/kg·K (0.11–0.115 BTU/lb·°F). Basis: base material: EN S275JR unalloyed structural steel (the EN counterpart of A36), typical, 50/100 °C. Source: Ovako, S275JR Steel Grade.
Coefficient of thermal expansion of Steel
Steel expands 12 µm/m·K (6.67 µin/in·°F): a 100 mm part grows 60 µm over a 50 °C rise. Basis: nominal (constructional data, no temperature range stated). Source: bauforumstahl (ArcelorMittal), Environmental Product Declaration: Structural Steel Sections and Merchant Bars (2023)archived copy.
Thermal diffusivity of Steel
Computed from the conductivity, density and specific heat (k / ρc): 13 mm²/s, how fast a temperature change spreads through it.