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Grade 300 Maraging Steel vs. SAE-AISI M4 Steel

Both grade 300 maraging steel and SAE-AISI M4 steel are iron alloys. They have 72% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 300 maraging steel and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1480
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 450
440
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 34
25
Density, g/cm3 8.2
8.3
Embodied Carbon, kg CO2/kg material 5.1
14
Embodied Energy, MJ/kg 68
210
Embodied Water, L/kg 150
110

Common Calculations

PREN (Pitting Resistance) 16
30
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 35 to 68
26 to 72
Strength to Weight: Bending, points 28 to 43
23 to 45
Thermal Shock Resistance, points 31 to 62
24 to 68

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Cobalt (Co), % 8.5 to 9.5
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 65 to 68.4
75.9 to 81.4
Manganese (Mn), % 0 to 0.1
0.15 to 0.4
Molybdenum (Mo), % 4.6 to 5.2
4.3 to 5.5
Nickel (Ni), % 18 to 19
0 to 0.3
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.1
0.2 to 0.45
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.5 to 0.8
0
Tungsten (W), % 0
5.3 to 6.5
Vanadium (V), % 0
3.8 to 4.5
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants