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AISI 321H Stainless Steel vs. S21460 Stainless Steel

Both AISI 321H stainless steel and S21460 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% of their average alloy composition in common. There are 29 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 AISI 321H stainless steel and the bottom bar is S21460 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
46
Fatigue Strength, MPa 200
390
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 400
580
Tensile Strength: Ultimate (UTS), MPa 580
830
Tensile Strength: Yield (Proof), MPa 230
430

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 480
410
Maximum Temperature: Mechanical, °C 940
920
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1380
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
18

Otherwise Unclassified Properties

Base Metal Price, % relative 16
14
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.2
3.0
Embodied Energy, MJ/kg 46
43
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
320
Resilience: Unit (Modulus of Resilience), kJ/m3 140
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
30
Strength to Weight: Bending, points 20
26
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.12
Chromium (Cr), % 17 to 19
17 to 19
Iron (Fe), % 65.4 to 74
57.3 to 63.7
Manganese (Mn), % 0 to 2.0
14 to 16
Nickel (Ni), % 9.0 to 12
5.0 to 6.0
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0 to 0.045
0 to 0.060
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.7
0