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AISI 420F Stainless Steel vs. ASTM A285 Carbon Steel

Both AISI 420F stainless steel and ASTM A285 carbon steel are iron alloys. There are 31 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 420F stainless steel and the bottom bar is ASTM A285 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
110 to 130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
30 to 34
Fatigue Strength, MPa 270
150 to 180
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 460
250 to 290
Tensile Strength: Ultimate (UTS), MPa 740
380 to 450
Tensile Strength: Yield (Proof), MPa 430
190 to 230

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 760
400
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1390
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
53
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
18
Embodied Water, L/kg 100
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 480
94 to 150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
13 to 16
Strength to Weight: Bending, points 23
15 to 17
Thermal Diffusivity, mm2/s 6.8
14
Thermal Shock Resistance, points 27
12 to 14