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EN 1.4740 Stainless Steel vs. Grade 300 Maraging Steel

Both EN 1.4740 stainless steel and grade 300 maraging steel are iron alloys. They have 68% of their average alloy composition in common. There are 17 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is EN 1.4740 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, % 22
6.5 to 18
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
75

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 490
450
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
34
Density, g/cm3 7.6
8.2
Embodied Carbon, kg CO2/kg material 2.3
5.1
Embodied Energy, MJ/kg 32
68
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 18
16
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23

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), % 0.3 to 0.5
0 to 0.030
Chromium (Cr), % 16 to 19
0
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 75.4 to 82.7
65 to 68.4
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 0 to 0.5
4.6 to 5.2
Nickel (Ni), % 0 to 1.0
18 to 19
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 1.0 to 2.5
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