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ASTM A356 Grade 8 vs. SAE-AISI 5160 Steel

Both ASTM A356 grade 8 and SAE-AISI 5160 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 8 and the bottom bar is SAE-AISI 5160 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200 to 340
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
12 to 18
Fatigue Strength, MPa 270
180 to 650
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 630
660 to 1150
Tensile Strength: Yield (Proof), MPa 390
280 to 1010

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 440
420
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 38
43
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 26
19
Embodied Water, L/kg 55
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
73 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 390
200 to 2700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
23 to 41
Strength to Weight: Bending, points 21
22 to 31
Thermal Diffusivity, mm2/s 10
12
Thermal Shock Resistance, points 18
19 to 34

Alloy Composition

Carbon (C), % 0 to 0.2
0.56 to 0.61
Chromium (Cr), % 1.0 to 1.5
0.7 to 0.9
Iron (Fe), % 95.4 to 97.4
97.1 to 97.8
Manganese (Mn), % 0.5 to 0.9
0.75 to 1.0
Molybdenum (Mo), % 0.9 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.2 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.050 to 0.15
0