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S32750 Stainless Steel vs. SAE-AISI 1045 Steel

Both S32750 stainless steel and SAE-AISI 1045 steel are iron alloys. They have 63% 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 S32750 stainless steel and the bottom bar is SAE-AISI 1045 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 17
13 to 18
Fatigue Strength, MPa 360
220 to 370
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
72
Shear Strength, MPa 530
380 to 410
Tensile Strength: Ultimate (UTS), MPa 860
620 to 680
Tensile Strength: Yield (Proof), MPa 590
330 to 580

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 12
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 21
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.1
1.4
Embodied Energy, MJ/kg 56
18
Embodied Water, L/kg 180
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
84 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 860
300 to 900
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31
22 to 24
Strength to Weight: Bending, points 26
21 to 22
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 25
20 to 22

Alloy Composition

Carbon (C), % 0 to 0.030
0.43 to 0.5
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 58.1 to 66.8
98.5 to 99
Manganese (Mn), % 0 to 1.2
0.6 to 0.9
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0
Sulfur (S), % 0 to 0.020
0 to 0.050