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S35140 Stainless Steel vs. SAE-AISI 1018 Steel

Both S35140 stainless steel and SAE-AISI 1018 steel are iron alloys. They have 49% 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 S35140 stainless steel and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
17 to 27
Fatigue Strength, MPa 250
180 to 270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 460
280 to 300
Tensile Strength: Ultimate (UTS), MPa 690
430 to 480
Tensile Strength: Yield (Proof), MPa 310
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
52
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
1.8
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.5
1.4
Embodied Energy, MJ/kg 78
18
Embodied Water, L/kg 190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 250
150 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
15 to 17
Strength to Weight: Bending, points 22
16 to 17
Thermal Diffusivity, mm2/s 3.7
14
Thermal Shock Resistance, points 16
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.1
0.15 to 0.2
Chromium (Cr), % 20 to 22
0
Iron (Fe), % 44.1 to 52.7
98.8 to 99.25
Manganese (Mn), % 1.0 to 3.0
0.6 to 0.9
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 25 to 27
0
Niobium (Nb), % 0.25 to 0.75
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0 to 0.050