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AISI 205 Stainless Steel vs. AISI 409 Stainless Steel

Both AISI 205 stainless steel and AISI 409 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 205 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, % 11 to 51
24
Fatigue Strength, MPa 410 to 640
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 560 to 850
270
Tensile Strength: Ultimate (UTS), MPa 800 to 1430
420
Tensile Strength: Yield (Proof), MPa 450 to 1100
200

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 880
710
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 18
11

Otherwise Unclassified Properties

Base Metal Price, % relative 11
6.5
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.0
Embodied Energy, MJ/kg 37
28
Embodied Water, L/kg 150
94

Common Calculations

PREN (Pitting Resistance) 23
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 430
83
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 3060
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 29 to 52
15
Strength to Weight: Bending, points 25 to 37
16
Thermal Shock Resistance, points 16 to 29
15

Alloy Composition

Carbon (C), % 0.12 to 0.25
0 to 0.080
Chromium (Cr), % 16.5 to 18.5
10.5 to 11.7
Iron (Fe), % 62.6 to 68.1
84.9 to 89.5
Manganese (Mn), % 14 to 15.5
0 to 1.0
Nickel (Ni), % 1.0 to 1.7
0 to 0.5
Nitrogen (N), % 0.32 to 0.4
0
Phosphorus (P), % 0 to 0.060
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