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S15500 Stainless Steel vs. S45500 Stainless Steel

Both S15500 stainless steel and S45500 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S15500 stainless steel and the bottom bar is S45500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 290 to 430
280 to 500
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.8 to 16
3.4 to 11
Fatigue Strength, MPa 350 to 650
570 to 890
Poisson's Ratio 0.28
0.28
Reduction in Area, % 17 to 40
34 to 45
Rockwell C Hardness 27 to 46
32 to 54
Shear Modulus, GPa 75
75
Shear Strength, MPa 540 to 870
790 to 1090
Tensile Strength: Ultimate (UTS), MPa 890 to 1490
1370 to 1850
Tensile Strength: Yield (Proof), MPa 590 to 1310
1240 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 440
620
Maximum Temperature: Mechanical, °C 820
760
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
17
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.7
3.8
Embodied Energy, MJ/kg 39
57
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 15
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
45 to 190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 53
48 to 65
Strength to Weight: Bending, points 26 to 37
35 to 42
Thermal Shock Resistance, points 30 to 50
48 to 64

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.050
Chromium (Cr), % 14 to 15.5
11 to 12.5
Copper (Cu), % 2.5 to 4.5
1.5 to 2.5
Iron (Fe), % 71.9 to 79.9
71.5 to 79.2
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 3.5 to 5.5
7.5 to 9.5
Niobium (Nb), % 0.15 to 0.45
0 to 0.5
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