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SAE-AISI A9 Steel vs. S46500 Stainless Steel

Both SAE-AISI A9 steel and S46500 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is S46500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
1260 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
15
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.7
3.6
Embodied Energy, MJ/kg 70
51
Embodied Water, L/kg 82
120

Common Calculations

PREN (Pitting Resistance) 10
15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 73
44 to 68
Strength to Weight: Bending, points 24 to 46
33 to 44
Thermal Shock Resistance, points 25 to 66
44 to 67

Alloy Composition

Carbon (C), % 0.45 to 0.55
0 to 0.020
Chromium (Cr), % 4.8 to 5.5
11 to 12.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.5
72.6 to 76.1
Manganese (Mn), % 0 to 0.5
0 to 0.25
Molybdenum (Mo), % 1.3 to 1.8
0.75 to 1.3
Nickel (Ni), % 1.3 to 1.8
10.7 to 11.3
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 1.0 to 1.2
0 to 0.25
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.5 to 1.8
Vanadium (V), % 0.8 to 1.4
0

Comparable Variants