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AISI 201 Stainless Steel vs. SAE-AISI 50B50 Steel

Both AISI 201 stainless steel and SAE-AISI 50B50 steel are iron alloys. They have 73% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 201 stainless steel and the bottom bar is SAE-AISI 50B50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 440
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 4.6 to 51
22
Fatigue Strength, MPa 280 to 600
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 840
370
Tensile Strength: Ultimate (UTS), MPa 650 to 1450
590
Tensile Strength: Yield (Proof), MPa 300 to 1080
370

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
410
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
45
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 38
19
Embodied Water, L/kg 140
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61 to 340
110
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 2970
370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23 to 52
21
Strength to Weight: Bending, points 22 to 37
20
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 14 to 32
17

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0 to 0.15
0.48 to 0.53
Chromium (Cr), % 16 to 18
0.4 to 0.6
Iron (Fe), % 67.5 to 75
97.4 to 98.2
Manganese (Mn), % 5.5 to 7.5
0.75 to 1.0
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.060
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040