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S21800 Stainless Steel vs. S46500 Stainless Steel

Both S21800 stainless steel and S46500 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 27 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 S21800 stainless steel and the bottom bar is S46500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
2.3 to 14
Fatigue Strength, MPa 330
550 to 890
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
75
Shear Strength, MPa 510
730 to 1120
Tensile Strength: Ultimate (UTS), MPa 740
1260 to 1930
Tensile Strength: Yield (Proof), MPa 390
1120 to 1810

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
680
Maximum Temperature: Mechanical, °C 900
780
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.1
3.6
Embodied Energy, MJ/kg 45
51
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 19
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
43 to 210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
44 to 68
Strength to Weight: Bending, points 24
33 to 44
Thermal Shock Resistance, points 17
44 to 67

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.020
Chromium (Cr), % 16 to 18
11 to 12.5
Iron (Fe), % 59.1 to 65.4
72.6 to 76.1
Manganese (Mn), % 7.0 to 9.0
0 to 0.25
Molybdenum (Mo), % 0
0.75 to 1.3
Nickel (Ni), % 8.0 to 9.0
10.7 to 11.3
Nitrogen (N), % 0.080 to 0.18
0 to 0.010
Phosphorus (P), % 0 to 0.060
0 to 0.015
Silicon (Si), % 3.5 to 4.5
0 to 0.25
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.5 to 1.8