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S21603 Stainless Steel vs. S21904 Stainless Steel

Both S21603 stainless steel and S21904 stainless steel are iron alloys. They have a very high 97% 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 S21603 stainless steel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
17 to 51
Fatigue Strength, MPa 360
380 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
78
Shear Strength, MPa 490
510 to 620
Tensile Strength: Ultimate (UTS), MPa 690
700 to 1000
Tensile Strength: Yield (Proof), MPa 390
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 990
980
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1380
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 17
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.6
3.0
Embodied Energy, MJ/kg 50
43
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 34
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 380
380 to 2070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
25 to 36
Strength to Weight: Bending, points 22
23 to 29
Thermal Shock Resistance, points 15
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.040
Chromium (Cr), % 17.5 to 22
19 to 21.5
Iron (Fe), % 57.6 to 67.8
59.5 to 67.4
Manganese (Mn), % 7.5 to 9.0
8.0 to 10
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
5.5 to 7.5
Nitrogen (N), % 0.25 to 0.5
0.15 to 0.4
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030