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S21904 Stainless Steel vs. S45503 Stainless Steel

Both S21904 stainless steel and S45503 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is S45503 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
410 to 500
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
4.6 to 6.8
Fatigue Strength, MPa 380 to 550
710 to 800
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Shear Strength, MPa 510 to 620
940 to 1070
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
1610 to 1850
Tensile Strength: Yield (Proof), MPa 390 to 910
1430 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 430
640
Maximum Temperature: Mechanical, °C 980
760
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
3.4
Embodied Energy, MJ/kg 43
48
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 25
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
82 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
57 to 65
Strength to Weight: Bending, points 23 to 29
39 to 43
Thermal Shock Resistance, points 15 to 21
56 to 64

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.010
Chromium (Cr), % 19 to 21.5
11 to 12.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 59.5 to 67.4
72.4 to 78.9
Manganese (Mn), % 8.0 to 10
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 5.5 to 7.5
7.5 to 9.5
Niobium (Nb), % 0
0.1 to 0.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.4