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S21603 Stainless Steel vs. EN 1.7221 Steel

Both S21603 stainless steel and EN 1.7221 steel are iron alloys. They have 65% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is EN 1.7221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200 to 230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
11 to 17
Fatigue Strength, MPa 360
290 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 690
650 to 780
Tensile Strength: Yield (Proof), MPa 390
430 to 630

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 990
420
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.4
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.5
Embodied Energy, MJ/kg 50
20
Embodied Water, L/kg 160
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
83 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 380
490 to 1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
23 to 27
Strength to Weight: Bending, points 22
21 to 24
Thermal Shock Resistance, points 15
19 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0.22 to 0.29
Chromium (Cr), % 17.5 to 22
0.8 to 1.2
Iron (Fe), % 57.6 to 67.8
96.8 to 98.3
Manganese (Mn), % 7.5 to 9.0
0.5 to 0.8
Molybdenum (Mo), % 2.0 to 3.0
0.15 to 0.3
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030