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AISI 316 Stainless Steel vs. AISI 420 Stainless Steel

Both AISI 316 stainless steel and AISI 420 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 34 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 AISI 316 stainless steel and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 360
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 8.0 to 55
8.0 to 15
Fatigue Strength, MPa 210 to 430
220 to 670
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 80
84
Shear Modulus, GPa 78
76
Shear Strength, MPa 350 to 690
420 to 1010
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
690 to 1720
Tensile Strength: Yield (Proof), MPa 230 to 850
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 590
620
Melting Completion (Liquidus), °C 1400
1510
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
27
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
7.5
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) 26
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 260
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 1820
380 to 4410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 41
25 to 62
Strength to Weight: Bending, points 18 to 31
22 to 41
Thermal Diffusivity, mm2/s 4.1
7.3
Thermal Shock Resistance, points 11 to 26
25 to 62

Alloy Composition

Carbon (C), % 0 to 0.080
0.15 to 0.4
Chromium (Cr), % 16 to 18
12 to 14
Iron (Fe), % 62 to 72
82.3 to 87.9
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.5
Nickel (Ni), % 10 to 14
0 to 0.75
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants