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AISI 420 Stainless Steel vs. N08332 Stainless Steel

Both AISI 420 stainless steel and N08332 stainless steel are iron alloys. They have 58% of their average alloy composition in common.

For each property being compared, the top bar is AISI 420 stainless steel and the bottom bar is N08332 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0 to 15
34
Fatigue Strength, MPa 220 to 670
170
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
77
Shear Modulus, GPa 76
76
Shear Strength, MPa 420 to 1010
350
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
520
Tensile Strength: Yield (Proof), MPa 380 to 1310
210

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 620
1050
Melting Completion (Liquidus), °C 1510
1390
Melting Onset (Solidus), °C 1450
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
32
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.0
5.4
Embodied Energy, MJ/kg 28
77
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 62
18
Strength to Weight: Bending, points 22 to 41
18
Thermal Diffusivity, mm2/s 7.3
3.1
Thermal Shock Resistance, points 25 to 62
12

Alloy Composition

Carbon (C), % 0.15 to 0.4
0.050 to 0.1
Chromium (Cr), % 12 to 14
17 to 20
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 82.3 to 87.9
38.3 to 48.2
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.75
34 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.75 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tin (Sn), % 0
0 to 0.025