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ACI-ASTM CK20 Steel vs. SAE-AISI M10 Steel

Both ACI-ASTM CK20 steel and SAE-AISI M10 steel are iron alloys. They have 58% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is SAE-AISI M10 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 530
740 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1400
1520
Melting Onset (Solidus), °C 1430
1470
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 14
31
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
14
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.4
8.3
Embodied Energy, MJ/kg 62
120
Embodied Water, L/kg 190
100

Common Calculations

PREN (Pitting Resistance) 26
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
26 to 76
Strength to Weight: Bending, points 19
23 to 47
Thermal Diffusivity, mm2/s 3.7
8.5
Thermal Shock Resistance, points 13
23 to 68

Alloy Composition

Carbon (C), % 0 to 0.2
0.84 to 1.1
Chromium (Cr), % 23 to 27
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 46.7 to 58
82.3 to 85.6
Manganese (Mn), % 0 to 2.0
0.1 to 0.4
Molybdenum (Mo), % 0 to 0.5
7.8 to 8.5
Nickel (Ni), % 19 to 22
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.2 to 0.45
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2