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ASTM A356 Grade 9 vs. SAE-AISI 1008 Steel

Both ASTM A356 grade 9 and SAE-AISI 1008 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 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 9 and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
93 to 100
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
22 to 33
Fatigue Strength, MPa 310
150 to 220
Poisson's Ratio 0.29
0.29
Reduction in Area, % 50
50 to 63
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 670
330 to 370
Tensile Strength: Yield (Proof), MPa 460
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 440
400
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
62
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.6
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.4
1.4
Embodied Energy, MJ/kg 33
18
Embodied Water, L/kg 56
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 570
92 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
12 to 13
Strength to Weight: Bending, points 22
13 to 15
Thermal Diffusivity, mm2/s 11
17
Thermal Shock Resistance, points 19
10 to 12

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.1
Chromium (Cr), % 1.0 to 1.5
0
Iron (Fe), % 95.2 to 97.2
99.31 to 99.7
Manganese (Mn), % 0.5 to 0.9
0.3 to 0.5
Molybdenum (Mo), % 0.9 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.2 to 0.6
0
Sulfur (S), % 0 to 0.030
0 to 0.050
Vanadium (V), % 0.2 to 0.35
0