Steel designation
Density (kg/m3)
Minimum 0.2% proof strength or yield strength (N/mm2)
Modulus of elasticity (kN/mm2)
Thermal expansion 20 - 100°C (10-6/°C)
Thermal conductivity at 20°C (W/m°C)
Heat capacity at 20°C (J/kg°C)
Austenitic stainless steel
1.4301 (304)
7900
210-2301)
200
16.0
15.0
500
1.4401 (316)
8000
220-2401)
Duplex stainless steel
1.4362 (2304)
7800
400-4201)
13.0
1.4462 (2205)
460-4801)
Other materials
Carbon steel (grade 275)
7850
2752)
210
12.2
51.97)
486
Aluminium (grade 5251)
2690
60.03) 2154)
70.0
24.0
155
850-900
Timber (European beech)
65.05) ('green' condition)
9.80 ('green' condition)
5.006) (along grain)
0.30 (along grain)
720 (12% moisture)
1185) (12% moisture)
12.6 (12% moisture)
40.06) (across grain)
0.10-0.20 (across grain)
10.0-20.0
Notes:
1) The higher value is applicable to thicknesses up to 6 mm. The lower value is applicable for thicknesses up to 75 mm.
2) Nominal thickness, t ≤ 16 mm.
3) Annealed condition
4) Temper designation H28 to BS 1470
5) Average bending strength from tests on small clear specimens
6) At 0°C
7) In the temperature range 20 - 100°C
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