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SAE-AISI M6 Steel vs. ACI-ASTM CA15M Steel

Both SAE-AISI M6 steel and ACI-ASTM CA15M steel are iron alloys. They have 77% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M6 steel and the bottom bar is ACI-ASTM CA15M 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 77
76
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
690

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1560
1450
Melting Onset (Solidus), °C 1510
1410
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 17
27
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 39
7.5
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.1
Embodied Energy, MJ/kg 120
29
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 28
15
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
25
Strength to Weight: Bending, points 24 to 45
22
Thermal Diffusivity, mm2/s 4.7
7.2
Thermal Shock Resistance, points 26 to 68
25

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
11.5 to 14
Cobalt (Co), % 11 to 13
0
Iron (Fe), % 68.8 to 74.6
82.1 to 88.4
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
0.15 to 1.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 0.65
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0