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S32520 Stainless Steel vs. AISI 309S Stainless Steel

Both S32520 stainless steel and AISI 309S stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 93% of their average alloy composition in common. There are 34 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 S32520 stainless steel and the bottom bar is AISI 309S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
42
Fatigue Strength, MPa 460
210
Poisson's Ratio 0.27
0.27
Reduction in Area, % 46
51
Shear Modulus, GPa 80
78
Shear Strength, MPa 560
400
Tensile Strength: Ultimate (UTS), MPa 860
580
Tensile Strength: Yield (Proof), MPa 630
230

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 20
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.0
3.6
Embodied Energy, MJ/kg 55
51
Embodied Water, L/kg 180
170

Common Calculations

PREN (Pitting Resistance) 41
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
190
Resilience: Unit (Modulus of Resilience), kJ/m3 960
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
21
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 4.1
4.0
Thermal Shock Resistance, points 24
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26
22 to 24
Copper (Cu), % 0.5 to 2.0
0
Iron (Fe), % 57.3 to 66.8
58.1 to 66
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 5.5 to 8.0
12 to 15
Nitrogen (N), % 0.2 to 0.35
0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030