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SAE-AISI 1008 Steel vs. AISI 403 Stainless Steel

Both SAE-AISI 1008 steel and AISI 403 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 32 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 SAE-AISI 1008 steel and the bottom bar is AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 93 to 100
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22 to 33
16 to 25
Fatigue Strength, MPa 150 to 220
200 to 340
Poisson's Ratio 0.29
0.28
Reduction in Area, % 50 to 63
47 to 50
Shear Modulus, GPa 73
76
Shear Strength, MPa 220 to 230
340 to 480
Tensile Strength: Ultimate (UTS), MPa 330 to 370
530 to 780
Tensile Strength: Yield (Proof), MPa 190 to 310
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
740
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 62
28
Thermal Expansion, µm/m-K 12
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.9
Embodied Energy, MJ/kg 18
27
Embodied Water, L/kg 45
99

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 91
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 260
210 to 840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 12 to 13
19 to 28
Strength to Weight: Bending, points 13 to 15
19 to 24
Thermal Diffusivity, mm2/s 17
7.6
Thermal Shock Resistance, points 10 to 12
20 to 29

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 0
11.5 to 13
Iron (Fe), % 99.31 to 99.7
84.7 to 88.5
Manganese (Mn), % 0.3 to 0.5
0 to 1.0
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.030