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N08800 Stainless Steel vs. S21904 Stainless Steel

Both N08800 stainless steel and S21904 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is N08800 stainless steel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 4.5 to 34
17 to 51
Fatigue Strength, MPa 150 to 390
380 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 340 to 580
510 to 620
Tensile Strength: Ultimate (UTS), MPa 500 to 1000
700 to 1000
Tensile Strength: Yield (Proof), MPa 190 to 830
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 490
430
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1390
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 30
15
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.3
3.0
Embodied Energy, MJ/kg 76
43
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 21
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 160
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 96 to 1740
380 to 2070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 35
25 to 36
Strength to Weight: Bending, points 18 to 28
23 to 29
Thermal Diffusivity, mm2/s 3.0
3.8
Thermal Shock Resistance, points 13 to 25
15 to 21

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
0
Carbon (C), % 0 to 0.1
0 to 0.040
Chromium (Cr), % 19 to 23
19 to 21.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 39.5 to 50.7
59.5 to 67.4
Manganese (Mn), % 0 to 1.5
8.0 to 10
Nickel (Ni), % 30 to 35
5.5 to 7.5
Nitrogen (N), % 0
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 0.015
0 to 0.030
Titanium (Ti), % 0.15 to 0.6
0

Comparable Variants