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AISI 205 Stainless Steel vs. S21904 Stainless Steel

Both AISI 205 stainless steel and S21904 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 205 stainless steel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 440
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 51
17 to 51
Fatigue Strength, MPa 410 to 640
380 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 560 to 850
510 to 620
Tensile Strength: Ultimate (UTS), MPa 800 to 1430
700 to 1000
Tensile Strength: Yield (Proof), MPa 450 to 1100
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 880
980
Melting Completion (Liquidus), °C 1380
1400
Melting Onset (Solidus), °C 1340
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 18
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 37
43
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 23
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 430
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 3060
380 to 2070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 29 to 52
25 to 36
Strength to Weight: Bending, points 25 to 37
23 to 29
Thermal Shock Resistance, points 16 to 29
15 to 21

Alloy Composition

Carbon (C), % 0.12 to 0.25
0 to 0.040
Chromium (Cr), % 16.5 to 18.5
19 to 21.5
Iron (Fe), % 62.6 to 68.1
59.5 to 67.4
Manganese (Mn), % 14 to 15.5
8.0 to 10
Nickel (Ni), % 1.0 to 1.7
5.5 to 7.5
Nitrogen (N), % 0.32 to 0.4
0.15 to 0.4
Phosphorus (P), % 0 to 0.060
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