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SAE-AISI 1146 Steel vs. EN 1.4981 Stainless Steel

Both SAE-AISI 1146 steel and EN 1.4981 stainless 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 SAE-AISI 1146 steel and the bottom bar is EN 1.4981 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13 to 17
39
Fatigue Strength, MPa 240 to 400
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 410 to 440
420
Tensile Strength: Ultimate (UTS), MPa 670 to 730
610
Tensile Strength: Yield (Proof), MPa 360 to 630
240

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
940
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
25
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
4.8
Embodied Energy, MJ/kg 18
67
Embodied Water, L/kg 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 97
190
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1050
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 26
21
Strength to Weight: Bending, points 22 to 23
20
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 20 to 22
14

Alloy Composition

Carbon (C), % 0.42 to 0.49
0.040 to 0.1
Chromium (Cr), % 0
15.5 to 17.5
Iron (Fe), % 98.3 to 98.8
59.6 to 66.7
Manganese (Mn), % 0.7 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
1.6 to 2.0
Nickel (Ni), % 0
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0.3 to 0.6
Sulfur (S), % 0.080 to 0.13
0 to 0.015