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S38815 Stainless Steel vs. ASTM A302 Alloy Steel

Both S38815 stainless steel and ASTM A302 alloy steel are iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S38815 stainless steel and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 34
20 to 23
Fatigue Strength, MPa 230
250 to 280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 410
370 to 390
Tensile Strength: Ultimate (UTS), MPa 610
590 to 620
Tensile Strength: Yield (Proof), MPa 290
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 860
410
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.4 to 3.0
Density, g/cm3 7.5
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 3.8
1.5 to 1.6
Embodied Energy, MJ/kg 54
20 to 21
Embodied Water, L/kg 140
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 220
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
21 to 22
Strength to Weight: Bending, points 21
20 to 21
Thermal Shock Resistance, points 15
17 to 18