AISCAISC 360-22
Tables4 structural design for fire conditions

Mechanical Properties of Structural Steel, Hot-Rolled Reinforcing Steel, and Concrete at Elevated Temperatures

PDF page 302 · AISC 360-22

3 tables appear under this heading.

1. PDF page 302

Steel Temperature,
ºF (ºC)
kE = E(T)/E = G(T)/Gkp = Fp(T)/Fyky = Fy(T)/Fy
68 (20)1.001.001.00
200 (93)1.001.001.00
400 (200)0.900.801.00
600 (320)0.780.581.00
750 (400)0.700.421.00
800 (430)0.670.400.94
1000 (540)0.490.290.66
1200 (650)0.220.130.35
1400 (760)0.110.060.16
1600 (870)0.070.040.07
1800 (980)0.050.030.04
2000 (1100)0.020.010.02
2200 (1200)0.000.000.00

2. PDF page 304

Concrete
Temperature,
°F (°C)
k c = f c ′( T ) f c ′k Ec = E c ( T ) E cε cu ( T ), in./in.
(mm/mm)
Normal Weight
Concrete
Lightweight
Concrete
Normal Weight
Concrete
68 (20)1.001.001.000.0025
200 (93)0.951.000.930.0034
400 (200)0.901.000.750.0046
550 (290)0.861.000.610.0058
600 (320)0.830.980.570.0062
800 (430)0.710.850.380.0080
1000 (540)0.540.710.200.0106
1200 (650)0.380.580.0920.0132
1400 (760)0.210.450.0730.0143
1600 (870)0.100.310.0550.0149
1800 (980)0.050.180.0360.0150
2000 (1100)0.010.050.0180.0150
2200 (1200)0.000.000.0000.0000

3. PDF page 305

Bolt Temperature,
°F (°C)
kb = Fnt (T)/Fnt = Fnv (T)/Fnv
68 (20)1.00
200 (93)0.97
300 (150)0.95
400 (200)0.93
600 (320)0.88
800 (430)0.71
900 (480)0.59
1000 (540)0.42
1200 (650)0.16
1400 (760)0.08
1600 (870)0.04
1800 (980)0.01
2000 (1100)0.00

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