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S81921 Stainless Steel vs. AISI 202 Stainless Steel

Both S81921 stainless steel and AISI 202 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S81921 stainless steel and the bottom bar is AISI 202 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
14 to 45
Fatigue Strength, MPa 370
290 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 460
490 to 590
Tensile Strength: Ultimate (UTS), MPa 710
700 to 980
Tensile Strength: Yield (Proof), MPa 500
310 to 580

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 990
910
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1390
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.8
Embodied Energy, MJ/kg 41
40
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 28
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 630
250 to 840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
25 to 35
Strength to Weight: Bending, points 23
23 to 29
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 20
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 19 to 22
17 to 19
Iron (Fe), % 66.7 to 75.9
63.5 to 71.5
Manganese (Mn), % 2.0 to 4.0
7.5 to 10
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 2.0 to 4.0
4.0 to 6.0
Nitrogen (N), % 0.14 to 0.2
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030