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SAE-AISI 1108 Steel vs. S39274 Stainless Steel

Both SAE-AISI 1108 steel and S39274 stainless steel are iron alloys. They have 62% 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 1108 steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 140
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 23 to 34
17
Fatigue Strength, MPa 170 to 260
380
Poisson's Ratio 0.29
0.27
Reduction in Area, % 45 to 57
34
Shear Modulus, GPa 73
81
Shear Strength, MPa 250 to 280
560
Tensile Strength: Ultimate (UTS), MPa 380 to 440
900
Tensile Strength: Yield (Proof), MPa 220 to 360
620

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
16
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.4
4.3
Embodied Energy, MJ/kg 18
60
Embodied Water, L/kg 46
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95 to 110
140
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 340
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 16
32
Strength to Weight: Bending, points 15 to 16
26
Thermal Diffusivity, mm2/s 14
4.2
Thermal Shock Resistance, points 12 to 14
25

Alloy Composition

Carbon (C), % 0.080 to 0.13
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 98.9 to 99.24
57 to 65.6
Manganese (Mn), % 0.6 to 0.8
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0.080 to 0.13
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5