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EN 1.4446 Stainless Steel vs. SAE-AISI 1040 Steel

Both EN 1.4446 stainless steel and SAE-AISI 1040 steel are iron alloys. They have 64% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4446 stainless steel and the bottom bar is SAE-AISI 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
13 to 20
Fatigue Strength, MPa 160
220 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 490
570 to 640
Tensile Strength: Yield (Proof), MPa 240
320 to 530

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
51
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.4
Embodied Energy, MJ/kg 60
18
Embodied Water, L/kg 160
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
79 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 140
270 to 760
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
20 to 23
Strength to Weight: Bending, points 17
19 to 21
Thermal Diffusivity, mm2/s 3.6
14
Thermal Shock Resistance, points 11
18 to 20

Alloy Composition

Carbon (C), % 0 to 0.030
0.37 to 0.44
Chromium (Cr), % 16.5 to 18.5
0
Iron (Fe), % 59.7 to 66.9
98.6 to 99.03
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Molybdenum (Mo), % 4.0 to 4.5
0
Nickel (Ni), % 12.5 to 14.5
0
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050