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AISI 446 Stainless Steel vs. SAE-AISI 1021 Steel

Both AISI 446 stainless steel and SAE-AISI 1021 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 AISI 446 stainless steel and the bottom bar is SAE-AISI 1021 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
130 to 150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
17 to 27
Fatigue Strength, MPa 200
190 to 300
Poisson's Ratio 0.27
0.29
Reduction in Area, % 50
46 to 54
Shear Modulus, GPa 79
73
Shear Strength, MPa 360
310 to 320
Tensile Strength: Ultimate (UTS), MPa 570
480 to 530
Tensile Strength: Yield (Proof), MPa 300
260 to 450

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1180
400
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
52
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.4
1.4
Embodied Energy, MJ/kg 35
18
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 230
180 to 530
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 21
17 to 19
Strength to Weight: Bending, points 20
17 to 18
Thermal Diffusivity, mm2/s 4.6
14
Thermal Shock Resistance, points 19
15 to 17

Alloy Composition

Carbon (C), % 0 to 0.2
0.18 to 0.23
Chromium (Cr), % 23 to 27
0
Iron (Fe), % 69.2 to 77
98.8 to 99.22
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Nickel (Ni), % 0 to 0.75
0
Nitrogen (N), % 0 to 0.25
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 to 0.050