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SAE-AISI 1548 Steel vs. AISI 308L Stainless Steel

Both SAE-AISI 1548 steel and AISI 308L stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1548 steel and the bottom bar is AISI 308L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 16
34
Fatigue Strength, MPa 270 to 430
180
Poisson's Ratio 0.29
0.28
Reduction in Area, % 31 to 39
46
Shear Modulus, GPa 72
78
Shear Strength, MPa 440 to 500
380
Tensile Strength: Ultimate (UTS), MPa 730 to 830
580
Tensile Strength: Yield (Proof), MPa 420 to 690
230

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1010
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.2
Embodied Energy, MJ/kg 19
45
Embodied Water, L/kg 47
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 99
160
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 1280
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 30
21
Strength to Weight: Bending, points 23 to 25
20
Thermal Diffusivity, mm2/s 14
4.1
Thermal Shock Resistance, points 23 to 27
13

Alloy Composition

Carbon (C), % 0.44 to 0.52
0 to 0.080
Chromium (Cr), % 0
19.5 to 22
Iron (Fe), % 98 to 98.5
63.8 to 70.5
Manganese (Mn), % 1.1 to 1.4
1.0 to 2.5
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0.25 to 0.6
Sulfur (S), % 0 to 0.050
0 to 0.030