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ASTM A414 Steel vs. S66286 Stainless Steel

Both ASTM A414 steel and S66286 stainless steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A414 steel and the bottom bar is S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 26
17 to 40
Fatigue Strength, MPa 140 to 260
240 to 410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
75
Shear Strength, MPa 230 to 370
420 to 630
Tensile Strength: Ultimate (UTS), MPa 360 to 590
620 to 1020
Tensile Strength: Yield (Proof), MPa 190 to 350
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
920
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49 to 50
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3 to 8.4
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
26
Density, g/cm3 7.8 to 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
6.0
Embodied Energy, MJ/kg 20 to 22
87
Embodied Water, L/kg 48
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69 to 130
150 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 330
190 to 1150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13 to 21
22 to 36
Strength to Weight: Bending, points 14 to 20
20 to 28
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 11 to 17
13 to 22