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EN 1.4611 Stainless Steel vs. AISI 418 Stainless Steel

Both EN 1.4611 stainless steel and AISI 418 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4611 stainless steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
17
Fatigue Strength, MPa 180
520
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 330
680
Tensile Strength: Ultimate (UTS), MPa 530
1100
Tensile Strength: Yield (Proof), MPa 280
850

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 530
390
Maximum Temperature: Mechanical, °C 970
770
Melting Completion (Liquidus), °C 1440
1500
Melting Onset (Solidus), °C 1390
1460
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.5
2.9
Embodied Energy, MJ/kg 36
41
Embodied Water, L/kg 140
110

Common Calculations

PREN (Pitting Resistance) 21
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
170
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
38
Strength to Weight: Bending, points 19
29
Thermal Diffusivity, mm2/s 5.7
6.7
Thermal Shock Resistance, points 18
40

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0.15 to 0.2
Chromium (Cr), % 19 to 22
12 to 14
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 73.3 to 80.8
78.5 to 83.6
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 0 to 0.5
1.8 to 2.2
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.030
Titanium (Ti), % 0.2 to 1.0
0
Tungsten (W), % 0
2.5 to 3.5