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

Both ACI-ASTM CC50 steel and SAE-AISI M50 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 ACI-ASTM CC50 steel and the bottom bar is SAE-AISI M50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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