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ASTM A356 Grade 10 vs. SAE-AISI 4320 Steel

Both ASTM A356 grade 10 and SAE-AISI 4320 steel are iron alloys. They have a very high 97% 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 10 and the bottom bar is SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
160 to 240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
21 to 29
Fatigue Strength, MPa 300
320
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 670
570 to 790
Tensile Strength: Yield (Proof), MPa 430
430 to 460

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 460
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
46
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
3.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.8
1.7
Embodied Energy, MJ/kg 23
22
Embodied Water, L/kg 59
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 480
480 to 560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
20 to 28
Strength to Weight: Bending, points 22
19 to 24
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 19
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.2
0.17 to 0.22
Chromium (Cr), % 2.0 to 2.8
0.4 to 0.6
Iron (Fe), % 94.4 to 96.6
95.8 to 97
Manganese (Mn), % 0.5 to 0.8
0.45 to 0.65
Molybdenum (Mo), % 0.9 to 1.2
0.2 to 0.3
Nickel (Ni), % 0
1.7 to 2.0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040