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AISI 420F Stainless Steel vs. EN 1.4000 Stainless Steel

Both AISI 420F stainless steel and EN 1.4000 stainless steel are iron alloys. Both are furnished in the annealed condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is AISI 420F stainless steel and the bottom bar is EN 1.4000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
22
Fatigue Strength, MPa 270
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 460
320
Tensile Strength: Ultimate (UTS), MPa 740
500
Tensile Strength: Yield (Proof), MPa 430
260

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 760
760
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
30
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
1.9
Embodied Energy, MJ/kg 28
27
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 14
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
91
Resilience: Unit (Modulus of Resilience), kJ/m3 480
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 6.8
8.1
Thermal Shock Resistance, points 27
18

Alloy Composition

Carbon (C), % 0.3 to 0.4
0 to 0.080
Chromium (Cr), % 12 to 14
12 to 14
Iron (Fe), % 82.4 to 87.6
83.9 to 88
Manganese (Mn), % 0 to 1.3
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.015