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AISI 409 Stainless Steel vs. ASTM A369 Grade FP1

Both AISI 409 stainless steel and ASTM A369 grade FP1 are iron alloys. They have 88% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 409 stainless steel and the bottom bar is ASTM A369 grade FP1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
20
Fatigue Strength, MPa 140
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 270
270
Tensile Strength: Ultimate (UTS), MPa 420
430
Tensile Strength: Yield (Proof), MPa 200
240

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 710
410
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
50
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
2.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
20
Embodied Water, L/kg 94
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
75
Resilience: Unit (Modulus of Resilience), kJ/m3 100
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 15
15
Strength to Weight: Bending, points 16
16
Thermal Diffusivity, mm2/s 6.7
13
Thermal Shock Resistance, points 15
13

Alloy Composition

Carbon (C), % 0 to 0.080
0.1 to 0.2
Chromium (Cr), % 10.5 to 11.7
0
Iron (Fe), % 84.9 to 89.5
97.8 to 99.06
Manganese (Mn), % 0 to 1.0
0.3 to 0.8
Molybdenum (Mo), % 0
0.44 to 0.65
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0 to 0.75
0