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Grade 350 Maraging Steel vs. AISI 303 Stainless Steel

Both grade 350 maraging steel and AISI 303 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is AISI 303 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.1 to 18
40 to 51
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 710 to 1400
430 to 470
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
600 to 690
Tensile Strength: Yield (Proof), MPa 830 to 2300
230 to 420

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 39
15
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.6
3.0
Embodied Energy, MJ/kg 74
42
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 16
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 38 to 82
21 to 25
Strength to Weight: Bending, points 29 to 49
20 to 22
Thermal Shock Resistance, points 35 to 74
13 to 15

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 0.15
Chromium (Cr), % 0
17 to 19
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
67.3 to 74.9
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
8.0 to 10
Phosphorus (P), % 0 to 0.010
0 to 0.2
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.010
0.15 to 0.35
Titanium (Ti), % 1.3 to 1.6
0
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants