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AISI 420 Stainless Steel vs. S21600 Stainless Steel

Both AISI 420 stainless steel and S21600 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 420 stainless steel and the bottom bar is S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0 to 15
46
Fatigue Strength, MPa 220 to 670
360
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
86
Shear Modulus, GPa 76
79
Shear Strength, MPa 420 to 1010
500
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
710
Tensile Strength: Yield (Proof), MPa 380 to 1310
390

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 620
990
Melting Completion (Liquidus), °C 1510
1420
Melting Onset (Solidus), °C 1450
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
17
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.6
Embodied Energy, MJ/kg 28
50
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 14
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
270
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 62
25
Strength to Weight: Bending, points 22 to 41
23
Thermal Shock Resistance, points 25 to 62
15

Alloy Composition

Carbon (C), % 0.15 to 0.4
0 to 0.080
Chromium (Cr), % 12 to 14
17.5 to 22
Iron (Fe), % 82.3 to 87.9
57.6 to 67.8
Manganese (Mn), % 0 to 1.0
7.5 to 9.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 0 to 0.75
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030