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EN 1.4550 Stainless Steel vs. AISI 314 Stainless Steel

Both EN 1.4550 stainless steel and AISI 314 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4550 stainless steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
45
Fatigue Strength, MPa 210
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 430
410
Tensile Strength: Ultimate (UTS), MPa 620
590
Tensile Strength: Yield (Proof), MPa 230
230

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Corrosion, °C 480
440
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1390
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 18
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
4.3
Embodied Energy, MJ/kg 51
62
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
210
Resilience: Unit (Modulus of Resilience), kJ/m3 140
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.25
Chromium (Cr), % 17 to 19
23 to 26
Iron (Fe), % 64.9 to 74
46.7 to 56.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 9.0 to 12
19 to 22
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
1.5 to 3.0
Sulfur (S), % 0 to 0.015
0 to 0.030