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SAE-AISI M50 Steel vs. AISI 205 Stainless Steel

Both SAE-AISI M50 steel and AISI 205 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M50 steel and the bottom bar is AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 720 to 2250
800 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1480
1380
Melting Onset (Solidus), °C 1440
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 5.1
2.6
Embodied Energy, MJ/kg 74
37
Embodied Water, L/kg 83
150

Common Calculations

PREN (Pitting Resistance) 19
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 26 to 80
29 to 52
Strength to Weight: Bending, points 23 to 49
25 to 37
Thermal Shock Resistance, points 21 to 66
16 to 29

Alloy Composition

Carbon (C), % 0.78 to 0.88
0.12 to 0.25
Chromium (Cr), % 3.8 to 4.5
16.5 to 18.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.4
62.6 to 68.1
Manganese (Mn), % 0.15 to 0.45
14 to 15.5
Molybdenum (Mo), % 3.9 to 4.8
0
Nickel (Ni), % 0 to 0.3
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.060
Silicon (Si), % 0.2 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.8 to 1.3
0

Comparable Variants