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AISI 418 Stainless Steel vs. EN 1.4361 Stainless Steel

Both AISI 418 stainless steel and EN 1.4361 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 33 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 1.4361 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
43
Fatigue Strength, MPa 520
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 680
440
Tensile Strength: Ultimate (UTS), MPa 1100
630
Tensile Strength: Yield (Proof), MPa 850
250

Thermal Properties

Latent Heat of Fusion, J/g 270
350
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 770
940
Melting Completion (Liquidus), °C 1500
1370
Melting Onset (Solidus), °C 1460
1330
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 25
14
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 2.9
3.6
Embodied Energy, MJ/kg 41
52
Embodied Water, L/kg 110
150

Common Calculations

PREN (Pitting Resistance) 19
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 38
23
Strength to Weight: Bending, points 29
21
Thermal Diffusivity, mm2/s 6.7
3.7
Thermal Shock Resistance, points 40
15

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.015
Chromium (Cr), % 12 to 14
16.5 to 18.5
Iron (Fe), % 78.5 to 83.6
58.7 to 65.8
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.2
Nickel (Ni), % 1.8 to 2.2
14 to 16
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.5
3.7 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 2.5 to 3.5
0