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AISI 409Cb Stainless Steel vs. SAE-AISI 1040 Steel

Both AISI 409Cb stainless steel and SAE-AISI 1040 steel are iron alloys. They have 88% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 409Cb stainless steel and the bottom bar is SAE-AISI 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
13 to 20
Fatigue Strength, MPa 140
220 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 270
350 to 390
Tensile Strength: Ultimate (UTS), MPa 420
570 to 640
Tensile Strength: Yield (Proof), MPa 200
320 to 530

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 710
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
18
Embodied Water, L/kg 94
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
79 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 100
270 to 760
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 15
20 to 23
Strength to Weight: Bending, points 16
19 to 21
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 15
18 to 20

Alloy Composition

Carbon (C), % 0 to 0.060
0.37 to 0.44
Chromium (Cr), % 10.5 to 11.7
0
Iron (Fe), % 84.9 to 89.5
98.6 to 99.03
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Nickel (Ni), % 0 to 0.5
0
Niobium (Nb), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.040
0 to 0.050