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ASTM A302 Alloy Steel vs. S30435 Stainless Steel

Both ASTM A302 alloy steel and S30435 stainless steel are iron alloys. There are 31 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 A302 alloy steel and the bottom bar is S30435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 23
51
Fatigue Strength, MPa 250 to 280
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 370 to 390
370
Tensile Strength: Ultimate (UTS), MPa 590 to 620
510
Tensile Strength: Yield (Proof), MPa 350 to 390
170

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 410
900
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39 to 51
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
14
Density, g/cm3 7.8 to 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
2.9
Embodied Energy, MJ/kg 20 to 21
40
Embodied Water, L/kg 48 to 50
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
210
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
77
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 22
18
Strength to Weight: Bending, points 20 to 21
18
Thermal Diffusivity, mm2/s 10 to 14
4.2
Thermal Shock Resistance, points 17 to 18
12