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S24000 Stainless Steel vs. AISI 321 Stainless Steel

Both S24000 stainless steel and AISI 321 stainless steel are iron alloys. They have 88% 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 S24000 stainless steel and the bottom bar is AISI 321 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
34 to 50
Fatigue Strength, MPa 370
220 to 270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 530
420 to 460
Tensile Strength: Ultimate (UTS), MPa 770
590 to 690
Tensile Strength: Yield (Proof), MPa 430
220 to 350

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
480
Maximum Temperature: Mechanical, °C 910
870
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
16
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.7
3.2
Embodied Energy, MJ/kg 39
45
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 23
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
190 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 470
130 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
21 to 25
Strength to Weight: Bending, points 24
20 to 22
Thermal Shock Resistance, points 16
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 17 to 19
17 to 19
Iron (Fe), % 61.5 to 69
65.3 to 74
Manganese (Mn), % 11.5 to 14.5
0 to 2.0
Nickel (Ni), % 2.3 to 3.7
9.0 to 12
Nitrogen (N), % 0.2 to 0.4
0 to 0.1
Phosphorus (P), % 0 to 0.060
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.7