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AISI 312 Stainless Steel vs. Grade 300 Maraging Steel

Both AISI 312 stainless steel and grade 300 maraging steel are iron alloys. They have 73% 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 312 stainless steel and the bottom bar is grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
6.5 to 18
Poisson's Ratio 0.27
0.3
Rockwell C Hardness 27
31 to 56
Shear Modulus, GPa 80
75
Shear Strength, MPa 510
640 to 1190
Tensile Strength: Ultimate (UTS), MPa 780
1030 to 2030
Tensile Strength: Yield (Proof), MPa 510
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1430
1480
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
34
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 3.4
5.1
Embodied Energy, MJ/kg 48
68
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 33
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130 to 170
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 28
35 to 68
Strength to Weight: Bending, points 24
28 to 43
Thermal Shock Resistance, points 21
31 to 62

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 0.030
0 to 0.030
Chromium (Cr), % 24 to 26
0
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 62.2 to 69.2
65 to 68.4
Manganese (Mn), % 0 to 2.0
0 to 0.1
Molybdenum (Mo), % 1.2 to 2.0
4.6 to 5.2
Nickel (Ni), % 5.5 to 6.5
18 to 19
Nitrogen (N), % 0.14 to 0.2
0
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
0.5 to 0.8
Zirconium (Zr), % 0
0 to 0.020