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AISI 321 Stainless Steel vs. EN 1.4122 Stainless Steel

Both AISI 321 stainless steel and EN 1.4122 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 32 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 AISI 321 stainless steel and the bottom bar is EN 1.4122 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 50
14
Fatigue Strength, MPa 220 to 270
260 to 360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 420 to 460
480 to 520
Tensile Strength: Ultimate (UTS), MPa 590 to 690
790 to 850
Tensile Strength: Yield (Proof), MPa 220 to 350
450 to 630

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 480
400
Maximum Temperature: Mechanical, °C 870
870
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.2
2.4
Embodied Energy, MJ/kg 45
33
Embodied Water, L/kg 140
120

Common Calculations

PREN (Pitting Resistance) 19
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
93 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
520 to 1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
28 to 31
Strength to Weight: Bending, points 20 to 22
25 to 26
Thermal Diffusivity, mm2/s 4.1
4.0
Thermal Shock Resistance, points 13 to 15
28 to 30

Alloy Composition

Carbon (C), % 0 to 0.080
0.33 to 0.45
Chromium (Cr), % 17 to 19
15.5 to 17.5
Iron (Fe), % 65.3 to 74
77.2 to 83.4
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0.8 to 1.3
Nickel (Ni), % 9.0 to 12
0 to 1.0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0 to 0.7
0