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ASTM A356 Grade 8 vs. ASTM A216 Cast Steel

Both ASTM A356 grade 8 and ASTM A216 cast steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 8 and the bottom bar is ASTM A216 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
25 to 27
Fatigue Strength, MPa 270
170 to 230
Poisson's Ratio 0.29
0.29
Reduction in Area, % 50
39
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 630
500 to 570
Tensile Strength: Yield (Proof), MPa 390
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 440
400
Melting Completion (Liquidus), °C 1470
1450 to 1460
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 38
49 to 52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.1 to 7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 26
18
Embodied Water, L/kg 55
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 390
140 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
18 to 20
Strength to Weight: Bending, points 21
18 to 20
Thermal Diffusivity, mm2/s 10
13 to 14
Thermal Shock Resistance, points 18
16 to 18