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AISI 321 Stainless Steel vs. EN 1.4123 Stainless Steel

Both AISI 321 stainless steel and EN 1.4123 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
220 to 250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 590 to 690
720 to 810

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 480
390
Maximum Temperature: Mechanical, °C 870
840
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
23
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 16
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.2
4.2
Embodied Energy, MJ/kg 45
62
Embodied Water, L/kg 140
120

Common Calculations

PREN (Pitting Resistance) 19
24
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
26 to 29
Strength to Weight: Bending, points 20 to 22
23 to 25
Thermal Diffusivity, mm2/s 4.1
6.3
Thermal Shock Resistance, points 13 to 15
26 to 29

Alloy Composition

Carbon (C), % 0 to 0.080
0.35 to 0.5
Chromium (Cr), % 17 to 19
14 to 16.5
Iron (Fe), % 65.3 to 74
76.7 to 84.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 9.0 to 12
0 to 0.5
Nitrogen (N), % 0 to 0.1
0.1 to 0.3
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 0.030
Titanium (Ti), % 0 to 0.7
0
Vanadium (V), % 0
0 to 1.5