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AISI 442 Stainless Steel vs. Grade 200 Maraging Steel

Both AISI 442 stainless steel and grade 200 maraging steel are iron alloys. They have 70% 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 AISI 442 stainless steel and the bottom bar is grade 200 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
9.1 to 18
Poisson's Ratio 0.27
0.3
Shear Modulus, GPa 78
74
Shear Strength, MPa 370
600 to 890
Tensile Strength: Ultimate (UTS), MPa 580
970 to 1500
Tensile Strength: Yield (Proof), MPa 310
690 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 2.3
4.5
Embodied Energy, MJ/kg 32
59
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 21
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 250
1240 to 5740
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 21
33 to 51
Strength to Weight: Bending, points 20
27 to 35
Thermal Shock Resistance, points 20
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 to 0.2
0 to 0.030
Chromium (Cr), % 18 to 23
0
Cobalt (Co), % 0
8.0 to 9.0
Iron (Fe), % 74.1 to 82
67.8 to 71.8
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 0
3.0 to 3.5
Nickel (Ni), % 0 to 0.6
17 to 19
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 1.0
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