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SAE-AISI 1045 Steel vs. S32205 Stainless Steel

Both SAE-AISI 1045 steel and S32205 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 (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1045 steel and the bottom bar is S32205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13 to 18
28
Fatigue Strength, MPa 220 to 370
370
Poisson's Ratio 0.29
0.27
Reduction in Area, % 40 to 51
51
Shear Modulus, GPa 72
80
Shear Strength, MPa 380 to 410
480
Tensile Strength: Ultimate (UTS), MPa 620 to 680
740
Tensile Strength: Yield (Proof), MPa 330 to 580
510

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1070
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.7
Embodied Energy, MJ/kg 18
50
Embodied Water, L/kg 46
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 93
190
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 900
630
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 24
26
Strength to Weight: Bending, points 21 to 22
23
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 20 to 22
20

Alloy Composition

Carbon (C), % 0.43 to 0.5
0 to 0.030
Chromium (Cr), % 0
22 to 23
Iron (Fe), % 98.5 to 99
63.7 to 70.4
Manganese (Mn), % 0.6 to 0.9
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 3.5
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.020