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SAE-AISI 1039 Steel vs. AISI 446 Stainless Steel

Both SAE-AISI 1039 steel and AISI 446 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 32 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 SAE-AISI 1039 steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 200
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14 to 18
23
Fatigue Strength, MPa 230 to 370
200
Poisson's Ratio 0.29
0.27
Reduction in Area, % 40 to 45
50
Shear Modulus, GPa 73
79
Shear Strength, MPa 380 to 420
360
Tensile Strength: Ultimate (UTS), MPa 610 to 690
570
Tensile Strength: Yield (Proof), MPa 340 to 580
300

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1180
Melting Completion (Liquidus), °C 1460
1510
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.4
Embodied Energy, MJ/kg 18
35
Embodied Water, L/kg 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 94
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 890
230
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 22 to 24
21
Strength to Weight: Bending, points 20 to 22
20
Thermal Diffusivity, mm2/s 14
4.6
Thermal Shock Resistance, points 19 to 22
19

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.2
Chromium (Cr), % 0
23 to 27
Iron (Fe), % 98.5 to 98.9
69.2 to 77
Manganese (Mn), % 0.7 to 1.0
0 to 1.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030