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S17400 Stainless Steel vs. EN 1.8818 Steel

Both S17400 stainless steel and EN 1.8818 steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S17400 stainless steel and the bottom bar is EN 1.8818 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 21
27
Fatigue Strength, MPa 380 to 670
200
Impact Strength: V-Notched Charpy, J 7.6 to 86
48
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 570 to 830
280
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
440
Tensile Strength: Yield (Proof), MPa 580 to 1250
270

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 850
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
48
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.6
Embodied Energy, MJ/kg 39
21
Embodied Water, L/kg 130
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 49
16
Strength to Weight: Bending, points 27 to 35
16
Thermal Diffusivity, mm2/s 4.5
13
Thermal Shock Resistance, points 30 to 46
13

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.034
Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 15 to 17
0 to 0.35
Copper (Cu), % 3.0 to 5.0
0 to 0.6
Iron (Fe), % 70.4 to 78.9
95.9 to 99.985
Manganese (Mn), % 0 to 1.0
0 to 1.6
Molybdenum (Mo), % 0
0 to 0.13
Nickel (Ni), % 3.0 to 5.0
0 to 0.35
Niobium (Nb), % 0.15 to 0.45
0 to 0.060
Nitrogen (N), % 0
0 to 0.017
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.1