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SAE-AISI 4718 Steel vs. Grade 200 Maraging Steel

Both SAE-AISI 4718 steel and grade 200 maraging steel are iron alloys. They have 71% of their average alloy composition in common. There are 24 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 SAE-AISI 4718 steel and the bottom bar is grade 200 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
9.1 to 18
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
74
Shear Strength, MPa 330
600 to 890
Tensile Strength: Ultimate (UTS), MPa 510
970 to 1500
Tensile Strength: Yield (Proof), MPa 370
690 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
31
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.6
4.5
Embodied Energy, MJ/kg 21
59
Embodied Water, L/kg 51
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1240 to 5740
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18
33 to 51
Strength to Weight: Bending, points 18
27 to 35
Thermal Shock Resistance, points 17
29 to 45

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0.16 to 0.21
0 to 0.030
Chromium (Cr), % 0.35 to 0.55
0
Cobalt (Co), % 0
8.0 to 9.0
Iron (Fe), % 96.3 to 97.4
67.8 to 71.8
Manganese (Mn), % 0.7 to 0.9
0 to 0.1
Molybdenum (Mo), % 0.3 to 0.4
3.0 to 3.5
Nickel (Ni), % 0.9 to 1.2
17 to 19
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0.15 to 0.35
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.020