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EN 1.4421 Stainless Steel vs. AISI 314 Stainless Steel

Both EN 1.4421 stainless steel and AISI 314 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
45
Fatigue Strength, MPa 380 to 520
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
590
Tensile Strength: Yield (Proof), MPa 620 to 950
230

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1400
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
4.3
Embodied Energy, MJ/kg 36
62
Embodied Water, L/kg 130
190

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
210
Resilience: Unit (Modulus of Resilience), kJ/m3 960 to 2270
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 39
21
Strength to Weight: Bending, points 26 to 30
20
Thermal Diffusivity, mm2/s 4.4
3.9
Thermal Shock Resistance, points 31 to 39
14

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.25
Chromium (Cr), % 15.5 to 17.5
23 to 26
Iron (Fe), % 74.4 to 80.5
46.7 to 56.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 4.0 to 5.5
19 to 22
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.8
1.5 to 3.0
Sulfur (S), % 0 to 0.020
0 to 0.030