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AISI 418 Stainless Steel vs. EN 1.8507 Steel

Both AISI 418 stainless steel and EN 1.8507 steel are iron alloys. They have 83% of their average alloy composition in common. There are 31 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 AISI 418 stainless steel and the bottom bar is EN 1.8507 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
270
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
16
Fatigue Strength, MPa 520
440
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 680
550
Tensile Strength: Ultimate (UTS), MPa 1100
900
Tensile Strength: Yield (Proof), MPa 850
670

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 770
430
Melting Completion (Liquidus), °C 1500
1450
Melting Onset (Solidus), °C 1460
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 25
41
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.6
Embodied Energy, MJ/kg 41
21
Embodied Water, L/kg 110
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
1210
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 38
32
Strength to Weight: Bending, points 29
27
Thermal Diffusivity, mm2/s 6.7
11
Thermal Shock Resistance, points 40
26

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.15 to 0.2
0.3 to 0.37
Chromium (Cr), % 12 to 14
1.0 to 1.3
Iron (Fe), % 78.5 to 83.6
96.1 to 97.7
Manganese (Mn), % 0 to 0.5
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.5
0.15 to 0.25
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 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Tungsten (W), % 2.5 to 3.5
0