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SAE-AISI 50B60 Steel vs. S21603 Stainless Steel

Both SAE-AISI 50B60 steel and S21603 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 50B60 steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 20
45
Fatigue Strength, MPa 240 to 330
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
79
Shear Strength, MPa 380
490
Tensile Strength: Ultimate (UTS), MPa 610 to 630
690
Tensile Strength: Yield (Proof), MPa 350 to 530
390

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 410
990
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.6
Embodied Energy, MJ/kg 19
50
Embodied Water, L/kg 48
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 100
270
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 750
380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 23
25
Strength to Weight: Bending, points 20 to 21
22
Thermal Shock Resistance, points 20
15

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.56 to 0.64
0 to 0.030
Chromium (Cr), % 0.4 to 0.6
17.5 to 22
Iron (Fe), % 97.3 to 98.1
57.6 to 67.8
Manganese (Mn), % 0.75 to 1.0
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030