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AISI 440A Stainless Steel vs. ASTM A266 Carbon Steel

Both AISI 440A stainless steel and ASTM A266 carbon steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is ASTM A266 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.0 to 20
21 to 26
Fatigue Strength, MPa 270 to 790
170 to 200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 1040
320 to 380
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
500 to 600
Tensile Strength: Yield (Proof), MPa 420 to 1650
230 to 290

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 760
400
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
51 to 52
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
18 to 19
Embodied Water, L/kg 120
46 to 47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
18 to 21
Strength to Weight: Bending, points 23 to 43
18 to 20
Thermal Diffusivity, mm2/s 6.2
14
Thermal Shock Resistance, points 26 to 65
16 to 19