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AISI 309 Stainless Steel vs. ASTM A216 Cast Steel

Both AISI 309 stainless steel and ASTM A216 cast steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 309 stainless steel and the bottom bar is ASTM A216 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34 to 47
25 to 27
Fatigue Strength, MPa 250 to 280
170 to 230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 600 to 710
500 to 570
Tensile Strength: Yield (Proof), MPa 260 to 350
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1450
1450 to 1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
49 to 52
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.1 to 7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.4
Embodied Energy, MJ/kg 51
18
Embodied Water, L/kg 170
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
140 to 250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 25
18 to 20
Strength to Weight: Bending, points 20 to 23
18 to 20
Thermal Diffusivity, mm2/s 4.3
13 to 14
Thermal Shock Resistance, points 14 to 16
16 to 18