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S21800 Stainless Steel vs. S43932 Stainless Steel

Both S21800 stainless steel and S43932 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 81% 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 S21800 stainless steel and the bottom bar is S43932 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
25
Fatigue Strength, MPa 330
160
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
78
Shear Modulus, GPa 75
77
Shear Strength, MPa 510
300
Tensile Strength: Ultimate (UTS), MPa 740
460
Tensile Strength: Yield (Proof), MPa 390
230

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
570
Maximum Temperature: Mechanical, °C 900
890
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1310
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 15
12
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.7
Embodied Energy, MJ/kg 45
40
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 19
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
96
Resilience: Unit (Modulus of Resilience), kJ/m3 390
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
17
Strength to Weight: Bending, points 24
17
Thermal Shock Resistance, points 17
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16 to 18
17 to 19
Iron (Fe), % 59.1 to 65.4
76.7 to 83
Manganese (Mn), % 7.0 to 9.0
0 to 1.0
Nickel (Ni), % 8.0 to 9.0
0 to 0.5
Niobium (Nb), % 0
0.2 to 0.75
Nitrogen (N), % 0.080 to 0.18
0 to 0.030
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.75