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AISI 301 Stainless Steel vs. AISI 409 Stainless Steel

Both AISI 301 stainless steel and AISI 409 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 301 stainless steel and the bottom bar is AISI 409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 7.4 to 46
24
Fatigue Strength, MPa 210 to 600
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 410 to 860
270
Tensile Strength: Ultimate (UTS), MPa 590 to 1460
420
Tensile Strength: Yield (Proof), MPa 230 to 1080
200

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 840
710
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
6.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.0
Embodied Energy, MJ/kg 39
28
Embodied Water, L/kg 130
94

Common Calculations

PREN (Pitting Resistance) 18
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 300
83
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 2970
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 52
15
Strength to Weight: Bending, points 20 to 37
16
Thermal Diffusivity, mm2/s 4.2
6.7
Thermal Shock Resistance, points 12 to 31
15

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 16 to 18
10.5 to 11.7
Iron (Fe), % 70.7 to 78
84.9 to 89.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 6.0 to 8.0
0 to 0.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.75