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EN 1.4986 Stainless Steel vs. SAE-AISI 1118 Steel

Both EN 1.4986 stainless steel and SAE-AISI 1118 steel are iron alloys. They have 64% of their average alloy composition in common. There are 31 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 EN 1.4986 stainless steel and the bottom bar is SAE-AISI 1118 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
13
Fatigue Strength, MPa 350
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 460
300
Tensile Strength: Ultimate (UTS), MPa 750
490
Tensile Strength: Yield (Proof), MPa 560
410

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 25
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.4
Embodied Energy, MJ/kg 67
19
Embodied Water, L/kg 150
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
61
Resilience: Unit (Modulus of Resilience), kJ/m3 790
450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 16
15

Alloy Composition

Boron (B), % 0.050 to 0.1
0
Carbon (C), % 0.040 to 0.1
0.14 to 0.2
Chromium (Cr), % 15.5 to 17.5
0
Iron (Fe), % 59.4 to 66.6
98 to 98.5
Manganese (Mn), % 0 to 1.5
1.3 to 1.6
Molybdenum (Mo), % 1.6 to 2.0
0
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0 to 0.030
0.080 to 0.13