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ASTM A36 Carbon Steel vs. S30815 Stainless Steel

Both ASTM A36 carbon steel and S30815 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 31 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 ASTM A36 carbon steel and the bottom bar is S30815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22
45
Fatigue Strength, MPa 200
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 300
480
Tensile Strength: Ultimate (UTS), MPa 480
680
Tensile Strength: Yield (Proof), MPa 290
350

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1020
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 50
15
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 14
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.3
Embodied Energy, MJ/kg 18
47
Embodied Water, L/kg 44
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
260
Resilience: Unit (Modulus of Resilience), kJ/m3 220
310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.26
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
20 to 22
Iron (Fe), % 99.25 to 100
62.8 to 68.4
Manganese (Mn), % 0
0 to 0.8
Nickel (Ni), % 0
10 to 12
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.4
1.4 to 2.0
Sulfur (S), % 0 to 0.050
0 to 0.030