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EN 1.4986 Stainless Steel vs. SAE-AISI 50B50 Steel

Both EN 1.4986 stainless steel and SAE-AISI 50B50 steel are iron alloys. They have 65% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4986 stainless steel and the bottom bar is SAE-AISI 50B50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
22
Fatigue Strength, MPa 350
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 460
370
Tensile Strength: Ultimate (UTS), MPa 750
590
Tensile Strength: Yield (Proof), MPa 560
370

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
410
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
45
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.4
Embodied Energy, MJ/kg 67
19
Embodied Water, L/kg 150
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 16
17

Alloy Composition

Boron (B), % 0.050 to 0.1
0.00050 to 0.0030
Carbon (C), % 0.040 to 0.1
0.48 to 0.53
Chromium (Cr), % 15.5 to 17.5
0.4 to 0.6
Iron (Fe), % 59.4 to 66.6
97.4 to 98.2
Manganese (Mn), % 0 to 1.5
0.75 to 1.0
Molybdenum (Mo), % 1.6 to 2.0
0
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0.3 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040