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AISI 321 Stainless Steel vs. EN 1.4911 Stainless Steel

Both AISI 321 stainless steel and EN 1.4911 stainless steel are iron alloys. They have 82% 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 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 50
11
Fatigue Strength, MPa 220 to 270
530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 420 to 460
640
Tensile Strength: Ultimate (UTS), MPa 590 to 690
1070
Tensile Strength: Yield (Proof), MPa 220 to 350
970

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 480
430
Maximum Temperature: Mechanical, °C 870
700
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
20
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 16
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
3.4
Embodied Energy, MJ/kg 45
49
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 19
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
120
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
2410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
38
Strength to Weight: Bending, points 20 to 22
30
Thermal Diffusivity, mm2/s 4.1
5.4
Thermal Shock Resistance, points 13 to 15
37

Alloy Composition

Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0 to 0.080
0.050 to 0.12
Chromium (Cr), % 17 to 19
9.8 to 11.2
Cobalt (Co), % 0
5.0 to 7.0
Iron (Fe), % 65.3 to 74
75.7 to 83.8
Manganese (Mn), % 0 to 2.0
0.3 to 1.3
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 9.0 to 12
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0 to 0.1
0 to 0.035
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0.1 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0 to 0.7
0
Tungsten (W), % 0
0 to 0.7
Vanadium (V), % 0
0.1 to 0.4