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S21800 Stainless Steel vs. EN 1.4594 Stainless Steel

Both S21800 stainless steel and EN 1.4594 stainless steel are iron alloys. They have 83% 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 S21800 stainless steel and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
11 to 17
Fatigue Strength, MPa 330
490 to 620
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 510
620 to 700
Tensile Strength: Ultimate (UTS), MPa 740
1020 to 1170
Tensile Strength: Yield (Proof), MPa 390
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 900
820
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.1
3.2
Embodied Energy, MJ/kg 45
45
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 19
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 390
1660 to 3320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
36 to 41
Strength to Weight: Bending, points 24
29 to 31
Thermal Shock Resistance, points 17
34 to 39

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.070
Chromium (Cr), % 16 to 18
13 to 15
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 59.1 to 65.4
72.6 to 79.5
Manganese (Mn), % 7.0 to 9.0
0 to 1.0
Molybdenum (Mo), % 0
1.2 to 2.0
Nickel (Ni), % 8.0 to 9.0
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 3.5 to 4.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015