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S44627 Stainless Steel vs. S32550 Stainless Steel

Both S44627 stainless steel and S32550 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 90% 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 S44627 stainless steel and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 24
21
Fatigue Strength, MPa 200
400
Poisson's Ratio 0.27
0.27
Reduction in Area, % 51
57
Shear Modulus, GPa 80
80
Shear Strength, MPa 310
540
Tensile Strength: Ultimate (UTS), MPa 490
860
Tensile Strength: Yield (Proof), MPa 300
620

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 470
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 14
20
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
3.8
Embodied Energy, MJ/kg 41
53
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 30
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
160
Resilience: Unit (Modulus of Resilience), kJ/m3 220
940
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
31
Strength to Weight: Bending, points 18
26
Thermal Diffusivity, mm2/s 4.6
4.4
Thermal Shock Resistance, points 16
23

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.040
Chromium (Cr), % 25 to 27.5
24 to 27
Copper (Cu), % 0 to 0.2
1.5 to 2.5
Iron (Fe), % 69.2 to 74.2
57.2 to 67
Manganese (Mn), % 0 to 0.4
0 to 1.5
Molybdenum (Mo), % 0.75 to 1.5
2.9 to 3.9
Nickel (Ni), % 0 to 0.5
4.5 to 6.5
Niobium (Nb), % 0.050 to 0.2
0
Nitrogen (N), % 0 to 0.015
0.1 to 0.25
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030