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EN 1.4421 Stainless Steel vs. S20161 Stainless Steel

Both EN 1.4421 stainless steel and S20161 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4421 stainless steel and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 17
46
Fatigue Strength, MPa 380 to 520
360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
980
Tensile Strength: Yield (Proof), MPa 620 to 950
390

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 870
870
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 36
39
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 18
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
360
Resilience: Unit (Modulus of Resilience), kJ/m3 960 to 2270
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 31 to 39
36
Strength to Weight: Bending, points 26 to 30
29
Thermal Diffusivity, mm2/s 4.4
4.0
Thermal Shock Resistance, points 31 to 39
22

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.15
Chromium (Cr), % 15.5 to 17.5
15 to 18
Iron (Fe), % 74.4 to 80.5
65.6 to 73.9
Manganese (Mn), % 0 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 4.0 to 5.5
4.0 to 6.0
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
3.0 to 4.0
Sulfur (S), % 0 to 0.020
0 to 0.040