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AISI 440A Stainless Steel vs. ASTM A414 Steel

Both AISI 440A stainless steel and ASTM A414 steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 A414 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.0 to 20
15 to 26
Fatigue Strength, MPa 270 to 790
140 to 260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 1040
230 to 370
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
360 to 590
Tensile Strength: Yield (Proof), MPa 420 to 1650
190 to 350

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
49 to 50
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.2 to 7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.3 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.2
Density, g/cm3 7.7
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 2.2
1.5 to 1.6
Embodied Energy, MJ/kg 31
20 to 22
Embodied Water, L/kg 120
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
69 to 130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
13 to 21
Strength to Weight: Bending, points 23 to 43
14 to 20
Thermal Diffusivity, mm2/s 6.2
13
Thermal Shock Resistance, points 26 to 65
11 to 17