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Grade 250 Maraging Steel vs. S44800 Stainless Steel

Both grade 250 maraging steel and S44800 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 25 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 grade 250 maraging steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 7.3 to 17
23
Poisson's Ratio 0.3
0.27
Rockwell C Hardness 30 to 53
18
Shear Modulus, GPa 75
82
Shear Strength, MPa 600 to 1060
370
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
590
Tensile Strength: Yield (Proof), MPa 660 to 1740
450

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 32
19
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 4.9
3.8
Embodied Energy, MJ/kg 65
52
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 16
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
120
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 33 to 61
21
Strength to Weight: Bending, points 26 to 40
20
Thermal Shock Resistance, points 29 to 54
19

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
0 to 0.010
Chromium (Cr), % 0
28 to 30
Cobalt (Co), % 7.0 to 8.5
0
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 66.3 to 71.1
62.6 to 66.5
Manganese (Mn), % 0 to 0.1
0 to 0.3
Molybdenum (Mo), % 4.6 to 5.2
3.5 to 4.2
Nickel (Ni), % 17 to 19
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.2
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0.3 to 0.5
0
Zirconium (Zr), % 0 to 0.020
0