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EN 1.4874 Stainless Steel vs. EN 1.7240 Steel

Both EN 1.4874 stainless steel and EN 1.7240 steel are iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4874 stainless steel and the bottom bar is EN 1.7240 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 480
Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 480
670 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1150
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
44
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.4
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.5
Embodied Energy, MJ/kg 110
20
Embodied Water, L/kg 290
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
24 to 71
Strength to Weight: Bending, points 16
22 to 45
Thermal Diffusivity, mm2/s 3.3
12
Thermal Shock Resistance, points 11
20 to 59

Alloy Composition

Carbon (C), % 0.35 to 0.65
0.56 to 0.64
Chromium (Cr), % 19 to 22
0.7 to 1.0
Cobalt (Co), % 18.5 to 22
0
Iron (Fe), % 23 to 38.9
96.7 to 97.9
Manganese (Mn), % 0 to 2.0
0.7 to 1.0
Molybdenum (Mo), % 2.5 to 3.0
0.15 to 0.25
Nickel (Ni), % 18 to 22
0
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 2.0 to 3.0
0