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EN 1.4618 Stainless Steel vs. SAE-AISI 1018 Steel

Both EN 1.4618 stainless steel and SAE-AISI 1018 steel are iron alloys. They have 68% 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 EN 1.4618 stainless steel and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
17 to 27
Fatigue Strength, MPa 240 to 250
180 to 270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 480 to 500
280 to 300
Tensile Strength: Ultimate (UTS), MPa 680 to 700
430 to 480
Tensile Strength: Yield (Proof), MPa 250 to 260
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 900
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.7
1.4
Embodied Energy, MJ/kg 39
18
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
150 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 25
15 to 17
Strength to Weight: Bending, points 22 to 23
16 to 17
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 15 to 16
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.1
0.15 to 0.2
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
98.8 to 99.25
Manganese (Mn), % 5.5 to 9.5
0.6 to 0.9
Nickel (Ni), % 4.5 to 5.5
0
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0 to 0.050

Comparable Variants