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AISI 420F Stainless Steel vs. SAE-AISI D2 Steel

Both AISI 420F stainless steel and SAE-AISI D2 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 30 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 AISI 420F stainless steel and the bottom bar is SAE-AISI D2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
5.0 to 16
Fatigue Strength, MPa 270
310 to 860
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 460
460 to 1160
Tensile Strength: Ultimate (UTS), MPa 740
760 to 2000
Tensile Strength: Yield (Proof), MPa 430
470 to 1510

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
31
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
4.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
8.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.4
Embodied Energy, MJ/kg 28
50
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 14
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
92 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 480
570 to 5940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
27 to 72
Strength to Weight: Bending, points 23
24 to 46
Thermal Diffusivity, mm2/s 6.8
8.3
Thermal Shock Resistance, points 27
25 to 67

Alloy Composition

Carbon (C), % 0.3 to 0.4
1.4 to 1.6
Chromium (Cr), % 12 to 14
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 82.4 to 87.6
81.3 to 86.9
Manganese (Mn), % 0 to 1.3
0 to 0.6
Molybdenum (Mo), % 0 to 0.5
0.7 to 1.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0.15 to 0.35
0 to 0.030
Vanadium (V), % 0
0 to 1.1