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AISI 316N Stainless Steel vs. AISI 420F Stainless Steel

Both AISI 316N stainless steel and AISI 420F stainless steel are iron alloys. They have 81% of their average alloy composition in common.

For each property being compared, the top bar is AISI 316N stainless steel and the bottom bar is AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 350
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.0 to 39
18
Fatigue Strength, MPa 230 to 450
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 420 to 690
460
Tensile Strength: Ultimate (UTS), MPa 620 to 1160
740
Tensile Strength: Yield (Proof), MPa 270 to 870
430

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 940
760
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
7.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.9
2.0
Embodied Energy, MJ/kg 53
28
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 27
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95 to 230
120
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 1880
480
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 41
27
Strength to Weight: Bending, points 20 to 31
23
Thermal Diffusivity, mm2/s 4.1
6.8
Thermal Shock Resistance, points 14 to 26
27

Alloy Composition

Carbon (C), % 0 to 0.080
0.3 to 0.4
Chromium (Cr), % 16 to 18
12 to 14
Iron (Fe), % 61.9 to 71.9
82.4 to 87.6
Manganese (Mn), % 0 to 2.0
0 to 1.3
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.5
Nickel (Ni), % 10 to 14
0
Nitrogen (N), % 0.1 to 0.16
0
Phosphorus (P), % 0 to 0.045
0 to 0.060
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35