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EN 1.5522 Steel vs. AISI 418 Stainless Steel

Both EN 1.5522 steel and AISI 418 stainless 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 EN 1.5522 steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 190
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
17
Fatigue Strength, MPa 210 to 330
520
Poisson's Ratio 0.29
0.28
Reduction in Area, % 59 to 69
50
Shear Modulus, GPa 73
77
Shear Strength, MPa 320 to 380
680
Tensile Strength: Ultimate (UTS), MPa 450 to 1490
1100
Tensile Strength: Yield (Proof), MPa 300 to 520
850

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
770
Melting Completion (Liquidus), °C 1460
1500
Melting Onset (Solidus), °C 1420
1460
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 45 to 250
170
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 720
1830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 53
38
Strength to Weight: Bending, points 17 to 37
29
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 13 to 44
40

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.2 to 0.24
0.15 to 0.2
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 98 to 98.9
78.5 to 83.6
Manganese (Mn), % 0.9 to 1.2
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
1.8 to 2.2
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0
2.5 to 3.5