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SAE-AISI M50 Steel vs. ACI-ASTM CC50 Steel

Both SAE-AISI M50 steel and ACI-ASTM CC50 steel are iron alloys. They have 74% of their average alloy composition in common. There are 24 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 SAE-AISI M50 steel and the bottom bar is ACI-ASTM CC50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 720 to 2250
430

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1480
1420
Melting Onset (Solidus), °C 1440
1370
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 35
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
14
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 5.1
2.7
Embodied Energy, MJ/kg 74
39
Embodied Water, L/kg 83
170

Common Calculations

PREN (Pitting Resistance) 19
28
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 26 to 80
16
Strength to Weight: Bending, points 23 to 49
17
Thermal Diffusivity, mm2/s 9.7
4.5
Thermal Shock Resistance, points 21 to 66
14

Alloy Composition

Carbon (C), % 0.78 to 0.88
0 to 0.5
Chromium (Cr), % 3.8 to 4.5
26 to 30
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.4
62.9 to 74
Manganese (Mn), % 0.15 to 0.45
0 to 1.0
Molybdenum (Mo), % 3.9 to 4.8
0
Nickel (Ni), % 0 to 0.3
0 to 4.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.8 to 1.3
0