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EN 1.8201 Steel vs. AISI 418 Stainless Steel

Both EN 1.8201 steel and AISI 418 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.8201 steel and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 310
520
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 390
680
Tensile Strength: Ultimate (UTS), MPa 630
1100
Tensile Strength: Yield (Proof), MPa 450
850

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 450
770
Melting Completion (Liquidus), °C 1500
1500
Melting Onset (Solidus), °C 1450
1460
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
15
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 2.5
2.9
Embodied Energy, MJ/kg 36
41
Embodied Water, L/kg 59
110

Common Calculations

PREN (Pitting Resistance) 5.7
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
170
Resilience: Unit (Modulus of Resilience), kJ/m3 530
1830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
38
Strength to Weight: Bending, points 20
29
Thermal Diffusivity, mm2/s 11
6.7
Thermal Shock Resistance, points 18
40

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.040 to 0.1
0.15 to 0.2
Chromium (Cr), % 1.9 to 2.6
12 to 14
Iron (Fe), % 93.6 to 96.2
78.5 to 83.6
Manganese (Mn), % 0.1 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.050 to 0.3
0 to 0.5
Nickel (Ni), % 0
1.8 to 2.2
Niobium (Nb), % 0.020 to 0.080
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.0050 to 0.060
0
Tungsten (W), % 1.5 to 1.8
2.5 to 3.5
Vanadium (V), % 0.2 to 0.3
0