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S32808 Stainless Steel vs. S44800 Stainless Steel

Both S32808 stainless steel and S44800 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 91% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S32808 stainless steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190
Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 17
23
Fatigue Strength, MPa 350
300
Poisson's Ratio 0.27
0.27
Rockwell C Hardness 28
18
Shear Modulus, GPa 81
82
Shear Strength, MPa 480
370
Tensile Strength: Ultimate (UTS), MPa 780
590
Tensile Strength: Yield (Proof), MPa 570
450

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 24
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.0
3.8
Embodied Energy, MJ/kg 57
52
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 40
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 790
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 3.8
4.6
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 27 to 27.9
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 58.1 to 62.8
62.6 to 66.5
Manganese (Mn), % 0 to 1.1
0 to 0.3
Molybdenum (Mo), % 0.8 to 1.2
3.5 to 4.2
Nickel (Ni), % 7.0 to 8.2
2.0 to 2.5
Nitrogen (N), % 0.3 to 0.4
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.2
Sulfur (S), % 0 to 0.010
0 to 0.020
Tungsten (W), % 2.1 to 2.5
0