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S45500 Stainless Steel vs. AISI 308 Stainless Steel

Both S45500 stainless steel and AISI 308 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S45500 stainless steel and the bottom bar is AISI 308 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 500
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 3.4 to 11
45
Fatigue Strength, MPa 570 to 890
210
Poisson's Ratio 0.28
0.28
Reduction in Area, % 34 to 45
57
Shear Modulus, GPa 75
78
Shear Strength, MPa 790 to 1090
410
Tensile Strength: Ultimate (UTS), MPa 1370 to 1850
590
Tensile Strength: Yield (Proof), MPa 1240 to 1700
230

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 620
420
Maximum Temperature: Mechanical, °C 760
990
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 17
17
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
3.2
Embodied Energy, MJ/kg 57
46
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 13
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 45 to 190
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 48 to 65
21
Strength to Weight: Bending, points 35 to 42
20
Thermal Shock Resistance, points 48 to 64
13

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.080
Chromium (Cr), % 11 to 12.5
19 to 21
Copper (Cu), % 1.5 to 2.5
0
Iron (Fe), % 71.5 to 79.2
64.1 to 71
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 7.5 to 9.5
10 to 12
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 0.8 to 1.4
0