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AISI 414 Stainless Steel vs. SAE-AISI 1140 Steel

Both AISI 414 stainless steel and SAE-AISI 1140 steel are iron alloys. They have 85% 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 AISI 414 stainless steel and the bottom bar is SAE-AISI 1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
14 to 18
Fatigue Strength, MPa 430 to 480
230 to 370
Poisson's Ratio 0.28
0.29
Reduction in Area, % 50
39 to 46
Shear Modulus, GPa 76
72
Shear Strength, MPa 550 to 590
370 to 420
Tensile Strength: Ultimate (UTS), MPa 900 to 960
600 to 700
Tensile Strength: Yield (Proof), MPa 700 to 790
340 to 570

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 750
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
51
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
1.4
Embodied Energy, MJ/kg 29
18
Embodied Water, L/kg 100
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
89 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 1260 to 1590
310 to 870
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 34
21 to 25
Strength to Weight: Bending, points 27 to 28
20 to 22
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 33 to 35
18 to 21

Alloy Composition

Carbon (C), % 0 to 0.15
0.37 to 0.44
Chromium (Cr), % 11.5 to 13.5
0
Iron (Fe), % 81.8 to 87.3
98.4 to 98.9
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Nickel (Ni), % 1.3 to 2.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0.080 to 0.13