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EN 1.7117 Steel vs. S21800 Stainless Steel

Both EN 1.7117 steel and S21800 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is EN 1.7117 steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 480
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 660 to 1930
740

Thermal Properties

Latent Heat of Fusion, J/g 270
340
Maximum Temperature: Mechanical, °C 420
900
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
15
Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 1.5
3.1
Embodied Energy, MJ/kg 21
45
Embodied Water, L/kg 51
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 24 to 69
27
Strength to Weight: Bending, points 22 to 44
24
Thermal Shock Resistance, points 20 to 58
17

Alloy Composition

Carbon (C), % 0.49 to 0.56
0 to 0.1
Chromium (Cr), % 0.7 to 1.0
16 to 18
Iron (Fe), % 95.2 to 96.4
59.1 to 65.4
Manganese (Mn), % 0.7 to 1.0
7.0 to 9.0
Nickel (Ni), % 0.5 to 0.7
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 1.2 to 1.5
3.5 to 4.5
Sulfur (S), % 0 to 0.025
0 to 0.030