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SAE-AISI 1008 Steel vs. S38100 Stainless Steel

Both SAE-AISI 1008 steel and S38100 stainless steel are iron alloys. They have 61% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1008 steel and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 93 to 100
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22 to 33
45
Fatigue Strength, MPa 150 to 220
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 220 to 230
400
Tensile Strength: Ultimate (UTS), MPa 330 to 370
580
Tensile Strength: Yield (Proof), MPa 190 to 310
230

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
970
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1430
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 62
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
20
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.8
Embodied Energy, MJ/kg 18
54
Embodied Water, L/kg 45
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 91
210
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 260
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 12 to 13
21
Strength to Weight: Bending, points 13 to 15
20
Thermal Diffusivity, mm2/s 17
4.0
Thermal Shock Resistance, points 10 to 12
13

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 0
17 to 19
Iron (Fe), % 99.31 to 99.7
57.9 to 64
Manganese (Mn), % 0.3 to 0.5
0 to 2.0
Nickel (Ni), % 0
17.5 to 18.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
1.5 to 2.5
Sulfur (S), % 0 to 0.050
0 to 0.030