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S20910 Stainless Steel vs. AISI 420 Stainless Steel

Both S20910 stainless steel and AISI 420 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 S20910 stainless steel and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 39
8.0 to 15
Fatigue Strength, MPa 310 to 460
220 to 670
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 500 to 570
420 to 1010
Tensile Strength: Ultimate (UTS), MPa 780 to 940
690 to 1720
Tensile Strength: Yield (Proof), MPa 430 to 810
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
390
Maximum Temperature: Mechanical, °C 1080
620
Melting Completion (Liquidus), °C 1420
1510
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
27
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 22
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.0
Embodied Energy, MJ/kg 68
28
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 34
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
380 to 4410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 33
25 to 62
Strength to Weight: Bending, points 24 to 27
22 to 41
Thermal Diffusivity, mm2/s 3.6
7.3
Thermal Shock Resistance, points 17 to 21
25 to 62

Alloy Composition

Carbon (C), % 0 to 0.060
0.15 to 0.4
Chromium (Cr), % 20.5 to 23.5
12 to 14
Iron (Fe), % 52.1 to 62.1
82.3 to 87.9
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0 to 0.5
Nickel (Ni), % 11.5 to 13.5
0 to 0.75
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0

Comparable Variants