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S44800 Stainless Steel vs. S32750 Stainless Steel

Both S44800 stainless steel and S32750 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 94% 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 S44800 stainless steel and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270
Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 23
17
Fatigue Strength, MPa 300
360
Poisson's Ratio 0.27
0.27
Rockwell C Hardness 18
28
Shear Modulus, GPa 82
81
Shear Strength, MPa 370
530
Tensile Strength: Ultimate (UTS), MPa 590
860
Tensile Strength: Yield (Proof), MPa 450
590

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.8
4.1
Embodied Energy, MJ/kg 52
56
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 42
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 480
860
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
31
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 4.6
4.0
Thermal Shock Resistance, points 19
25

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 28 to 30
24 to 26
Copper (Cu), % 0 to 0.15
0 to 0.5
Iron (Fe), % 62.6 to 66.5
58.1 to 66.8
Manganese (Mn), % 0 to 0.3
0 to 1.2
Molybdenum (Mo), % 3.5 to 4.2
3.0 to 5.0
Nickel (Ni), % 2.0 to 2.5
6.0 to 8.0
Nitrogen (N), % 0 to 0.020
0.24 to 0.32
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.2
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.020