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AISI 418 Stainless Steel vs. EN 1.5502 Steel

Both AISI 418 stainless steel and EN 1.5502 steel are iron alloys. They have 82% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is EN 1.5502 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
120 to 160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
12 to 20
Fatigue Strength, MPa 520
190 to 290
Poisson's Ratio 0.28
0.29
Reduction in Area, % 50
62 to 76
Shear Modulus, GPa 77
73
Shear Strength, MPa 680
280 to 330
Tensile Strength: Ultimate (UTS), MPa 1100
400 to 1380
Tensile Strength: Yield (Proof), MPa 850
270 to 440

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 770
400
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1460
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 25
52
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
1.9
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.4
Embodied Energy, MJ/kg 41
19
Embodied Water, L/kg 110
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
41 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
200 to 520
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 38
14 to 49
Strength to Weight: Bending, points 29
15 to 35
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 40
12 to 40

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.15 to 0.2
0.15 to 0.2
Chromium (Cr), % 12 to 14
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 78.5 to 83.6
98 to 99.249
Manganese (Mn), % 0 to 0.5
0.6 to 0.9
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 2.5 to 3.5
0