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AISI 415 Stainless Steel vs. SAE-AISI 1040 Steel

Both AISI 415 stainless steel and SAE-AISI 1040 steel are iron alloys. They have 82% of their average alloy composition in common. There are 32 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 415 stainless steel and the bottom bar is SAE-AISI 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
13 to 20
Fatigue Strength, MPa 430
220 to 340
Poisson's Ratio 0.28
0.29
Reduction in Area, % 50
40 to 45
Shear Modulus, GPa 76
73
Shear Strength, MPa 550
350 to 390
Tensile Strength: Ultimate (UTS), MPa 900
570 to 640
Tensile Strength: Yield (Proof), MPa 700
320 to 530

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 780
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 24
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.4
Embodied Energy, MJ/kg 35
18
Embodied Water, L/kg 110
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
79 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
270 to 760
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
20 to 23
Strength to Weight: Bending, points 26
19 to 21
Thermal Diffusivity, mm2/s 6.4
14
Thermal Shock Resistance, points 33
18 to 20

Alloy Composition

Carbon (C), % 0 to 0.050
0.37 to 0.44
Chromium (Cr), % 11.5 to 14
0
Iron (Fe), % 77.8 to 84
98.6 to 99.03
Manganese (Mn), % 0.5 to 1.0
0.6 to 0.9
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 3.5 to 5.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0 to 0.050