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S21800 Stainless Steel vs. EN 1.4659 Stainless Steel

Both S21800 stainless steel and EN 1.4659 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 29 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 1.4659 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
260
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 40
49
Fatigue Strength, MPa 330
460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
81
Shear Strength, MPa 510
640
Tensile Strength: Ultimate (UTS), MPa 740
900
Tensile Strength: Yield (Proof), MPa 390
480

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1360
1480
Melting Onset (Solidus), °C 1310
1430
Specific Heat Capacity, J/kg-K 500
460
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
37
Density, g/cm3 7.5
8.2
Embodied Carbon, kg CO2/kg material 3.1
6.5
Embodied Energy, MJ/kg 45
89
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 19
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
370
Resilience: Unit (Modulus of Resilience), kJ/m3 390
550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
31
Strength to Weight: Bending, points 24
25
Thermal Shock Resistance, points 17
19

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.020
Chromium (Cr), % 16 to 18
23 to 25
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 59.1 to 65.4
35.7 to 45.7
Manganese (Mn), % 7.0 to 9.0
2.0 to 4.0
Molybdenum (Mo), % 0
5.5 to 6.5
Nickel (Ni), % 8.0 to 9.0
21 to 23
Nitrogen (N), % 0.080 to 0.18
0.35 to 0.5
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 3.5 to 4.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
1.5 to 2.5