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ASTM A572 Grade 50 vs. SAE-AISI 1008 Steel

Both ASTM A572 grade 50 and SAE-AISI 1008 steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A572 grade 50 and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
93 to 100
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
22 to 33
Fatigue Strength, MPa 280
150 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 320
220 to 230
Tensile Strength: Ultimate (UTS), MPa 500
330 to 370
Tensile Strength: Yield (Proof), MPa 390
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
62
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 22
18
Embodied Water, L/kg 47
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 410
92 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
12 to 13
Strength to Weight: Bending, points 18
13 to 15
Thermal Diffusivity, mm2/s 14
17
Thermal Shock Resistance, points 15
10 to 12

Alloy Composition

Carbon (C), % 0 to 0.23
0 to 0.1
Iron (Fe), % 97.4 to 99.5
99.31 to 99.7
Manganese (Mn), % 0.5 to 1.6
0.3 to 0.5
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.050
0 to 0.050
Titanium (Ti), % 0 to 0.040
0
Vanadium (V), % 0 to 0.15
0