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SAE-AISI M48 Steel vs. ACI-ASTM CG12 Steel

Both SAE-AISI M48 steel and ACI-ASTM CG12 steel are iron alloys. They have 70% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M48 steel and the bottom bar is ACI-ASTM CG12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 890 to 2390
550

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1670
1410
Melting Onset (Solidus), °C 1620
1370
Specific Heat Capacity, J/kg-K 420
480
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 48
18
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 13
3.3
Embodied Energy, MJ/kg 190
48
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 37
22
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 28 to 76
20
Strength to Weight: Bending, points 23 to 45
19
Thermal Shock Resistance, points 26 to 71
12

Alloy Composition

Carbon (C), % 1.4 to 1.5
0 to 0.12
Chromium (Cr), % 3.5 to 4.0
20 to 23
Cobalt (Co), % 8.0 to 10
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 63.8 to 69.8
60.3 to 70
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.8 to 5.5
0
Nickel (Ni), % 0 to 0.3
10 to 13
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 9.5 to 10.5
0
Vanadium (V), % 2.8 to 3.3
0