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S66286 Stainless Steel vs. ASTM A302 Alloy Steel

Both S66286 stainless steel and ASTM A302 alloy 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 S66286 stainless steel and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 40
20 to 23
Fatigue Strength, MPa 240 to 410
250 to 280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 420 to 630
370 to 390
Tensile Strength: Ultimate (UTS), MPa 620 to 1020
590 to 620
Tensile Strength: Yield (Proof), MPa 280 to 670
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 920
410
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
39 to 51
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 26
2.4 to 3.0
Density, g/cm3 7.9
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 6.0
1.5 to 1.6
Embodied Energy, MJ/kg 87
20 to 21
Embodied Water, L/kg 170
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 200
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 1150
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 36
21 to 22
Strength to Weight: Bending, points 20 to 28
20 to 21
Thermal Diffusivity, mm2/s 4.0
10 to 14
Thermal Shock Resistance, points 13 to 22
17 to 18