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EN 1.7117 Steel vs. EN 1.4874 Stainless Steel

Both EN 1.7117 steel and EN 1.4874 stainless 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 1.7117 steel and the bottom bar is EN 1.4874 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 480
140
Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 660 to 1930
480

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 420
1150
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 43
13
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
70
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 1.5
7.6
Embodied Energy, MJ/kg 21
110
Embodied Water, L/kg 51
290

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 69
16
Strength to Weight: Bending, points 22 to 44
16
Thermal Diffusivity, mm2/s 12
3.3
Thermal Shock Resistance, points 20 to 58
11

Alloy Composition

Carbon (C), % 0.49 to 0.56
0.35 to 0.65
Chromium (Cr), % 0.7 to 1.0
19 to 22
Cobalt (Co), % 0
18.5 to 22
Iron (Fe), % 95.2 to 96.4
23 to 38.9
Manganese (Mn), % 0.7 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0.5 to 0.7
18 to 22
Niobium (Nb), % 0
0.75 to 1.3
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 1.2 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0
2.0 to 3.0