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S30815 Stainless Steel vs. SAE-AISI 1018 Steel

Both S30815 stainless steel and SAE-AISI 1018 steel are iron alloys. They have 66% of their average alloy composition in common. There are 32 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 S30815 stainless steel and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
17 to 27
Fatigue Strength, MPa 320
180 to 270
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
45 to 57
Shear Modulus, GPa 77
73
Shear Strength, MPa 480
280 to 300
Tensile Strength: Ultimate (UTS), MPa 680
430 to 480
Tensile Strength: Yield (Proof), MPa 350
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1020
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 17
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.3
1.4
Embodied Energy, MJ/kg 47
18
Embodied Water, L/kg 160
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 310
150 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
15 to 17
Strength to Weight: Bending, points 22
16 to 17
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 15
14 to 15

Alloy Composition

Carbon (C), % 0.050 to 0.1
0.15 to 0.2
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
0
Iron (Fe), % 62.8 to 68.4
98.8 to 99.25
Manganese (Mn), % 0 to 0.8
0.6 to 0.9
Nickel (Ni), % 10 to 12
0
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.4 to 2.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050