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AISI 384 Stainless Steel vs. Grade 250 Maraging Steel

Both AISI 384 stainless steel and grade 250 maraging steel are iron alloys. They have 83% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AISI 384 stainless steel and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 480
970 to 1800

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 20
32
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 3.7
4.9
Embodied Energy, MJ/kg 52
65
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 16
16
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 17
33 to 61
Strength to Weight: Bending, points 17
26 to 40
Thermal Shock Resistance, points 11
29 to 54

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 to 0.040
0 to 0.030
Chromium (Cr), % 15 to 17
0
Cobalt (Co), % 0
7.0 to 8.5
Iron (Fe), % 60.9 to 68
66.3 to 71.1
Manganese (Mn), % 0 to 2.0
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 17 to 19
17 to 19
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.3 to 0.5
Zirconium (Zr), % 0
0 to 0.020