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ASTM A356 Grade 2 vs. S32808 Stainless Steel

Both ASTM A356 grade 2 and S32808 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 2 and the bottom bar is S32808 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 25
17
Fatigue Strength, MPa 200
350
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 510
780
Tensile Strength: Yield (Proof), MPa 270
570

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
14
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
24
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.5
4.0
Embodied Energy, MJ/kg 20
57
Embodied Water, L/kg 47
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18
27
Strength to Weight: Bending, points 18
24
Thermal Diffusivity, mm2/s 14
3.8
Thermal Shock Resistance, points 15
21

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.030
Chromium (Cr), % 0
27 to 27.9
Iron (Fe), % 97.7 to 99.55
58.1 to 62.8
Manganese (Mn), % 0 to 0.7
0 to 1.1
Molybdenum (Mo), % 0.45 to 0.65
0.8 to 1.2
Nickel (Ni), % 0
7.0 to 8.2
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
2.1 to 2.5