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AISI 301 Stainless Steel vs. S21904 Stainless Steel

Both AISI 301 stainless steel and S21904 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 301 stainless steel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 440
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 7.4 to 46
17 to 51
Fatigue Strength, MPa 210 to 600
380 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 410 to 860
510 to 620
Tensile Strength: Ultimate (UTS), MPa 590 to 1460
700 to 1000
Tensile Strength: Yield (Proof), MPa 230 to 1080
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 840
980
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 39
43
Embodied Water, L/kg 130
160

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 300
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 2970
380 to 2070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 52
25 to 36
Strength to Weight: Bending, points 20 to 37
23 to 29
Thermal Diffusivity, mm2/s 4.2
3.8
Thermal Shock Resistance, points 12 to 31
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.040
Chromium (Cr), % 16 to 18
19 to 21.5
Iron (Fe), % 70.7 to 78
59.5 to 67.4
Manganese (Mn), % 0 to 2.0
8.0 to 10
Nickel (Ni), % 6.0 to 8.0
5.5 to 7.5
Nitrogen (N), % 0 to 0.1
0.15 to 0.4
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants