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AISI 420 Stainless Steel vs. AISI 416 Stainless Steel

Both AISI 420 stainless steel and AISI 416 stainless steel are iron alloys. Their average alloy composition is basically identical. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 420 stainless steel and the bottom bar is AISI 416 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
230 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.0 to 15
13 to 31
Fatigue Strength, MPa 220 to 670
230 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 420 to 1010
340 to 480
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
510 to 800
Tensile Strength: Yield (Proof), MPa 380 to 1310
290 to 600

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 620
680
Melting Completion (Liquidus), °C 1510
1530
Melting Onset (Solidus), °C 1450
1480
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
30
Thermal Expansion, µm/m-K 10
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
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 88 to 130
98 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
220 to 940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 62
18 to 29
Strength to Weight: Bending, points 22 to 41
18 to 25
Thermal Diffusivity, mm2/s 7.3
8.1
Thermal Shock Resistance, points 25 to 62
19 to 30

Alloy Composition

Carbon (C), % 0.15 to 0.4
0 to 0.15
Chromium (Cr), % 12 to 14
12 to 14
Iron (Fe), % 82.3 to 87.9
83.2 to 87.9
Manganese (Mn), % 0 to 1.0
0 to 1.3
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35

Comparable Variants