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SAE-AISI 1045 Steel vs. AISI 420F Stainless Steel

Both SAE-AISI 1045 steel and AISI 420F stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 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 AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 13 to 18
18
Fatigue Strength, MPa 220 to 370
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 380 to 410
460
Tensile Strength: Ultimate (UTS), MPa 620 to 680
740
Tensile Strength: Yield (Proof), MPa 330 to 580
430

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
760
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 18
28
Embodied Water, L/kg 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 93
120
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 900
480
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 24
27
Strength to Weight: Bending, points 21 to 22
23
Thermal Diffusivity, mm2/s 14
6.8
Thermal Shock Resistance, points 20 to 22
27

Alloy Composition

Carbon (C), % 0.43 to 0.5
0.3 to 0.4
Chromium (Cr), % 0
12 to 14
Iron (Fe), % 98.5 to 99
82.4 to 87.6
Manganese (Mn), % 0.6 to 0.9
0 to 1.3
Molybdenum (Mo), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0.15 to 0.35