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AISI 420F Stainless Steel vs. S38815 Stainless Steel

Both AISI 420F stainless steel and S38815 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 76% of their average alloy composition in common. There are 29 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 AISI 420F stainless steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
34
Fatigue Strength, MPa 270
230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 460
410
Tensile Strength: Ultimate (UTS), MPa 740
610
Tensile Strength: Yield (Proof), MPa 430
290

Thermal Properties

Latent Heat of Fusion, J/g 270
370
Maximum Temperature: Corrosion, °C 390
400
Maximum Temperature: Mechanical, °C 760
860
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1390
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
19
Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 2.0
3.8
Embodied Energy, MJ/kg 28
54
Embodied Water, L/kg 100
140

Common Calculations

PREN (Pitting Resistance) 14
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 480
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 23
21
Thermal Shock Resistance, points 27
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.3 to 0.4
0 to 0.030
Chromium (Cr), % 12 to 14
13 to 15
Copper (Cu), % 0
0.75 to 1.5
Iron (Fe), % 82.4 to 87.6
56.1 to 67
Manganese (Mn), % 0 to 1.3
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0.75 to 1.5
Nickel (Ni), % 0
13 to 17
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
5.5 to 6.5
Sulfur (S), % 0.15 to 0.35
0 to 0.020