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SAE-AISI 8740 Steel vs. K93050 Alloy

Both SAE-AISI 8740 steel and K93050 alloy are iron alloys. They have 64% of their average alloy composition in common. There are 19 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 8740 steel and the bottom bar is K93050 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 580 to 670
500 to 680

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
26
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.5
4.7
Embodied Energy, MJ/kg 20
65
Embodied Water, L/kg 50
120

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 20 to 24
17 to 23
Strength to Weight: Bending, points 20 to 22
17 to 21
Thermal Shock Resistance, points 17 to 20
16 to 21

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.15
Chromium (Cr), % 0.4 to 0.6
0 to 0.25
Cobalt (Co), % 0
0 to 0.5
Iron (Fe), % 96.5 to 97.7
61.4 to 63.9
Manganese (Mn), % 0.75 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 0.4 to 0.7
36
Phosphorus (P), % 0 to 0.035
0 to 0.020
Selenium (Se), % 0
0.15 to 0.3
Silicon (Si), % 0.15 to 0.35
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.020

Comparable Variants