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AISI 329 Stainless Steel vs. SAE-AISI 1040 Steel

Both AISI 329 stainless steel and SAE-AISI 1040 steel are iron alloys. They have 69% of their average alloy composition in common. There are 31 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 329 stainless steel and the bottom bar is SAE-AISI 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
13 to 20
Fatigue Strength, MPa 330
220 to 340
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Shear Strength, MPa 440
350 to 390
Tensile Strength: Ultimate (UTS), MPa 710
570 to 640
Tensile Strength: Yield (Proof), MPa 540
320 to 530

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 16
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.4
Embodied Energy, MJ/kg 44
18
Embodied Water, L/kg 170
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
79 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 730
270 to 760
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
20 to 23
Strength to Weight: Bending, points 23
19 to 21
Thermal Diffusivity, mm2/s 4.3
14
Thermal Shock Resistance, points 19
18 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0.37 to 0.44
Chromium (Cr), % 23 to 28
0
Iron (Fe), % 63.1 to 74
98.6 to 99.03
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 2.0 to 5.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0 to 0.050