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AISI 420 Stainless Steel vs. S32808 Stainless Steel

Both AISI 420 stainless steel and S32808 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 33 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 AISI 420 stainless steel and the bottom bar is S32808 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 8.0 to 15
17
Fatigue Strength, MPa 220 to 670
350
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
81
Shear Strength, MPa 420 to 1010
480
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
780
Tensile Strength: Yield (Proof), MPa 380 to 1310
570

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 620
1100
Melting Completion (Liquidus), °C 1510
1470
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
14
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
24
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
4.0
Embodied Energy, MJ/kg 28
57
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 14
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 62
27
Strength to Weight: Bending, points 22 to 41
24
Thermal Diffusivity, mm2/s 7.3
3.8
Thermal Shock Resistance, points 25 to 62
21

Alloy Composition

Carbon (C), % 0.15 to 0.4
0 to 0.030
Chromium (Cr), % 12 to 14
27 to 27.9
Iron (Fe), % 82.3 to 87.9
58.1 to 62.8
Manganese (Mn), % 0 to 1.0
0 to 1.1
Molybdenum (Mo), % 0 to 0.5
0.8 to 1.2
Nickel (Ni), % 0 to 0.75
7.0 to 8.2
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
2.1 to 2.5