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S81921 Stainless Steel vs. S46500 Stainless Steel

Both S81921 stainless steel and S46500 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 28 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 S81921 stainless steel and the bottom bar is S46500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
2.3 to 14
Fatigue Strength, MPa 370
550 to 890
Poisson's Ratio 0.28
0.28
Rockwell C Hardness 27
29 to 54
Shear Modulus, GPa 79
75
Shear Strength, MPa 460
730 to 1120
Tensile Strength: Ultimate (UTS), MPa 710
1260 to 1930
Tensile Strength: Yield (Proof), MPa 500
1120 to 1810

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 430
680
Maximum Temperature: Mechanical, °C 990
780
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 14
15
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.9
3.6
Embodied Energy, MJ/kg 41
51
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 28
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
43 to 210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
44 to 68
Strength to Weight: Bending, points 23
33 to 44
Thermal Shock Resistance, points 20
44 to 67

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 19 to 22
11 to 12.5
Iron (Fe), % 66.7 to 75.9
72.6 to 76.1
Manganese (Mn), % 2.0 to 4.0
0 to 0.25
Molybdenum (Mo), % 1.0 to 2.0
0.75 to 1.3
Nickel (Ni), % 2.0 to 4.0
10.7 to 11.3
Nitrogen (N), % 0.14 to 0.2
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.25
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.5 to 1.8