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EN 1.8818 Steel vs. EN 1.4409 Stainless Steel

Both EN 1.8818 steel and EN 1.4409 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.8818 steel and the bottom bar is EN 1.4409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
34
Fatigue Strength, MPa 200
180
Impact Strength: V-Notched Charpy, J 48
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 440
490
Tensile Strength: Yield (Proof), MPa 270
220

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
990
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.7
Embodied Energy, MJ/kg 21
52
Embodied Water, L/kg 49
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
140
Resilience: Unit (Modulus of Resilience), kJ/m3 200
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16
17
Strength to Weight: Bending, points 16
18
Thermal Diffusivity, mm2/s 13
4.1
Thermal Shock Resistance, points 13
11

Alloy Composition

Aluminum (Al), % 0.015 to 0.034
0
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 0 to 0.35
18 to 20
Copper (Cu), % 0 to 0.6
0
Iron (Fe), % 95.9 to 99.985
61.7 to 71
Manganese (Mn), % 0 to 1.6
0 to 2.0
Molybdenum (Mo), % 0 to 0.13
2.0 to 2.5
Nickel (Ni), % 0 to 0.35
9.0 to 12
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.017
0 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.55
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0 to 0.060
0
Vanadium (V), % 0 to 0.1
0