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EN 1.4659 Stainless Steel vs. SAE-AISI 1018 Steel

Both EN 1.4659 stainless steel and SAE-AISI 1018 steel are iron alloys. They have 41% 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 1.4659 stainless steel and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 49
17 to 27
Fatigue Strength, MPa 460
180 to 270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 640
280 to 300
Tensile Strength: Ultimate (UTS), MPa 900
430 to 480
Tensile Strength: Yield (Proof), MPa 480
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
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 37
1.8
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 6.5
1.4
Embodied Energy, MJ/kg 89
18
Embodied Water, L/kg 220
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 370
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 550
150 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 31
15 to 17
Strength to Weight: Bending, points 25
16 to 17
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 19
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.020
0.15 to 0.2
Chromium (Cr), % 23 to 25
0
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 35.7 to 45.7
98.8 to 99.25
Manganese (Mn), % 2.0 to 4.0
0.6 to 0.9
Molybdenum (Mo), % 5.5 to 6.5
0
Nickel (Ni), % 21 to 23
0
Nitrogen (N), % 0.35 to 0.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.010
0 to 0.050
Tungsten (W), % 1.5 to 2.5
0