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Grade 350 Maraging Steel vs. AISI 347 Stainless Steel

Both grade 350 maraging steel and AISI 347 stainless steel are iron alloys. They have 74% 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 347 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.1 to 18
34 to 46
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 710 to 1400
430 to 460
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
610 to 690
Tensile Strength: Yield (Proof), MPa 830 to 2300
240 to 350

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1470
1430
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
19
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.6
3.6
Embodied Energy, MJ/kg 74
52
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 16
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
190 to 220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 38 to 82
22 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 0.080
Chromium (Cr), % 0
17 to 19
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
64.1 to 74
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
9.0 to 13
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.010
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 1.3 to 1.6
0
Zirconium (Zr), % 0 to 0.020
0