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S82121 Stainless Steel vs. Grade VDSiCrV Steel

Both S82121 stainless steel and grade VDSiCrV steel are iron alloys. They have 73% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S82121 stainless steel and the bottom bar is grade VDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
630
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 730
2100

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 1020
420
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.3
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.8
1.9
Embodied Energy, MJ/kg 40
26
Embodied Water, L/kg 150
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
75
Strength to Weight: Bending, points 23
47
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 20
63

Alloy Composition

Carbon (C), % 0 to 0.035
0.5 to 0.7
Chromium (Cr), % 21 to 23
0.5 to 1.0
Copper (Cu), % 0.2 to 1.2
0 to 0.060
Iron (Fe), % 66.7 to 75.4
96.1 to 97.8
Manganese (Mn), % 1.0 to 2.5
0.4 to 0.9
Molybdenum (Mo), % 0.3 to 1.3
0
Nickel (Ni), % 2.0 to 4.0
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
1.2 to 1.7
Sulfur (S), % 0 to 0.010
0 to 0.020
Vanadium (V), % 0
0.1 to 0.25