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EN 1.3955 Stainless Steel vs. Grade 300 Maraging Steel

Both EN 1.3955 stainless steel and grade 300 maraging steel are iron alloys. They have 78% of their average alloy composition in common. There are 23 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 EN 1.3955 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, % 23
6.5 to 18
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 520
1030 to 2030
Tensile Strength: Yield (Proof), MPa 220
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1430
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 16
34
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 3.2
5.1
Embodied Energy, MJ/kg 45
68
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 19
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 18
35 to 68
Strength to Weight: Bending, points 18
28 to 43
Thermal Shock Resistance, points 15
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 0.15
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
0
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 65.5 to 73.5
65 to 68.4
Manganese (Mn), % 0 to 2.0
0 to 0.1
Molybdenum (Mo), % 0 to 0.75
4.6 to 5.2
Nickel (Ni), % 10 to 12
18 to 19
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