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AISI 301 Stainless Steel vs. AISI 309S Stainless Steel

Both AISI 301 stainless steel and AISI 309S stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 33 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 301 stainless steel and the bottom bar is AISI 309S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 440
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 7.4 to 46
42
Fatigue Strength, MPa 210 to 600
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 410 to 860
400
Tensile Strength: Ultimate (UTS), MPa 590 to 1460
580
Tensile Strength: Yield (Proof), MPa 230 to 1080
230

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 840
1080
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
3.6
Embodied Energy, MJ/kg 39
51
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 18
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 300
190
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 2970
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 52
21
Strength to Weight: Bending, points 20 to 37
20
Thermal Diffusivity, mm2/s 4.2
4.0
Thermal Shock Resistance, points 12 to 31
13

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 16 to 18
22 to 24
Iron (Fe), % 70.7 to 78
58.1 to 66
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 6.0 to 8.0
12 to 15
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 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030