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S32550 Stainless Steel vs. S45500 Stainless Steel

Both S32550 stainless steel and S45500 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S32550 stainless steel and the bottom bar is S45500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
280 to 500
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
3.4 to 11
Fatigue Strength, MPa 400
570 to 890
Poisson's Ratio 0.27
0.28
Reduction in Area, % 57
34 to 45
Rockwell C Hardness 28
32 to 54
Shear Modulus, GPa 80
75
Shear Strength, MPa 540
790 to 1090
Tensile Strength: Ultimate (UTS), MPa 860
1370 to 1850
Tensile Strength: Yield (Proof), MPa 620
1240 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 450
620
Maximum Temperature: Mechanical, °C 1100
760
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 20
17
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.8
3.8
Embodied Energy, MJ/kg 53
57
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 40
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
45 to 190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31
48 to 65
Strength to Weight: Bending, points 26
35 to 42
Thermal Shock Resistance, points 23
48 to 64

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.050
Chromium (Cr), % 24 to 27
11 to 12.5
Copper (Cu), % 1.5 to 2.5
1.5 to 2.5
Iron (Fe), % 57.2 to 67
71.5 to 79.2
Manganese (Mn), % 0 to 1.5
0 to 0.5
Molybdenum (Mo), % 2.9 to 3.9
0 to 0.5
Nickel (Ni), % 4.5 to 6.5
7.5 to 9.5
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0.8 to 1.4