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EN 1.4122 Stainless Steel vs. EN 1.8201 Steel

Both EN 1.4122 stainless steel and EN 1.8201 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 (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4122 stainless steel and the bottom bar is EN 1.8201 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14
20
Fatigue Strength, MPa 260 to 360
310
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 480 to 520
390
Tensile Strength: Ultimate (UTS), MPa 790 to 850
630
Tensile Strength: Yield (Proof), MPa 450 to 630
450

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
450
Melting Completion (Liquidus), °C 1440
1500
Melting Onset (Solidus), °C 1400
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.0
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.4
2.5
Embodied Energy, MJ/kg 33
36
Embodied Water, L/kg 120
59

Common Calculations

PREN (Pitting Resistance) 20
5.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 31
22
Strength to Weight: Bending, points 25 to 26
20
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 28 to 30
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.030
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.33 to 0.45
0.040 to 0.1
Chromium (Cr), % 15.5 to 17.5
1.9 to 2.6
Iron (Fe), % 77.2 to 83.4
93.6 to 96.2
Manganese (Mn), % 0 to 1.5
0.1 to 0.6
Molybdenum (Mo), % 0.8 to 1.3
0.050 to 0.3
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0
0.020 to 0.080
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0.0050 to 0.060
Tungsten (W), % 0
1.5 to 1.8
Vanadium (V), % 0
0.2 to 0.3