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ASTM A356 Grade 8 vs. S28200 Stainless Steel

Both ASTM A356 grade 8 and S28200 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 28 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 ASTM A356 grade 8 and the bottom bar is S28200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
45
Fatigue Strength, MPa 270
430
Poisson's Ratio 0.29
0.28
Reduction in Area, % 50
57
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 630
870
Tensile Strength: Yield (Proof), MPa 390
460

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 440
900
Melting Completion (Liquidus), °C 1470
1380
Melting Onset (Solidus), °C 1430
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
12
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 2.0
2.8
Embodied Energy, MJ/kg 26
41
Embodied Water, L/kg 55
160

Common Calculations

PREN (Pitting Resistance) 4.7
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
330
Resilience: Unit (Modulus of Resilience), kJ/m3 390
540
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 22
32
Strength to Weight: Bending, points 21
27
Thermal Shock Resistance, points 18
17

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.15
Chromium (Cr), % 1.0 to 1.5
17 to 19
Copper (Cu), % 0
0.75 to 1.3
Iron (Fe), % 95.4 to 97.4
57.7 to 64.1
Manganese (Mn), % 0.5 to 0.9
17 to 19
Molybdenum (Mo), % 0.9 to 1.2
0.75 to 1.3
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.2 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.050 to 0.15
0