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SAE-AISI M50 Steel vs. EN 1.4011 Stainless Steel

Both SAE-AISI M50 steel and EN 1.4011 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 24 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 M50 steel and the bottom bar is EN 1.4011 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 720 to 2250
700

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1440
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 35
25
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 10
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
2.0
Embodied Energy, MJ/kg 74
28
Embodied Water, L/kg 83
100

Common Calculations

PREN (Pitting Resistance) 19
13
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 80
25
Strength to Weight: Bending, points 23 to 49
23
Thermal Diffusivity, mm2/s 9.7
6.7
Thermal Shock Resistance, points 21 to 66
24

Alloy Composition

Carbon (C), % 0.78 to 0.88
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
11.5 to 13.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.4
82.8 to 88.5
Manganese (Mn), % 0.15 to 0.45
0 to 1.0
Molybdenum (Mo), % 3.9 to 4.8
0 to 0.5
Nickel (Ni), % 0 to 0.3
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.8 to 1.3
0