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S28200 Stainless Steel vs. AISI 321 Stainless Steel

Both S28200 stainless steel and AISI 321 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 29 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 S28200 stainless steel and the bottom bar is AISI 321 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
34 to 50
Fatigue Strength, MPa 430
220 to 270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 610
420 to 460
Tensile Strength: Ultimate (UTS), MPa 870
590 to 690
Tensile Strength: Yield (Proof), MPa 460
220 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
480
Maximum Temperature: Mechanical, °C 900
870
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 18
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
16
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.2
Embodied Energy, MJ/kg 41
45
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 29
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 330
190 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 540
130 to 310
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 32
21 to 25
Strength to Weight: Bending, points 27
20 to 22
Thermal Shock Resistance, points 17
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 17 to 19
17 to 19
Copper (Cu), % 0.75 to 1.3
0
Iron (Fe), % 57.7 to 64.1
65.3 to 74
Manganese (Mn), % 17 to 19
0 to 2.0
Molybdenum (Mo), % 0.75 to 1.3
0
Nickel (Ni), % 0
9.0 to 12
Nitrogen (N), % 0.4 to 0.6
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.7