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Annealed AISI 301 vs. Annealed SAE-AISI A9

Both annealed AISI 301 and annealed SAE-AISI A9 are iron alloys. Both are furnished in the annealed condition. They have 82% 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 annealed AISI 301 and the bottom bar is annealed SAE-AISI A9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 46
21
Fatigue Strength, MPa 210
250
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 410
480
Tensile Strength: Ultimate (UTS), MPa 590
770
Tensile Strength: Yield (Proof), MPa 230
360

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
35
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
4.7
Embodied Energy, MJ/kg 39
70
Embodied Water, L/kg 130
82

Common Calculations

PREN (Pitting Resistance) 18
10
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
130
Resilience: Unit (Modulus of Resilience), kJ/m3 130
350
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
28
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 4.2
9.6
Thermal Shock Resistance, points 12
25

Alloy Composition

Carbon (C), % 0 to 0.15
0.45 to 0.55
Chromium (Cr), % 16 to 18
4.8 to 5.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 70.7 to 78
87 to 90.5
Manganese (Mn), % 0 to 2.0
0 to 0.5
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 6.0 to 8.0
1.3 to 1.8
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
1.0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.8 to 1.4