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EN 1.4005 Stainless Steel vs. S21900 Stainless Steel

Both EN 1.4005 stainless steel and S21900 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4005 stainless steel and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13 to 21
50
Fatigue Strength, MPa 240 to 290
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 390 to 450
510
Tensile Strength: Ultimate (UTS), MPa 630 to 750
710
Tensile Strength: Yield (Proof), MPa 370 to 500
390

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 760
980
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
14
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.0
Embodied Energy, MJ/kg 28
43
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 14
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
300
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23 to 27
26
Strength to Weight: Bending, points 21 to 24
23
Thermal Diffusivity, mm2/s 8.1
3.8
Thermal Shock Resistance, points 23 to 27
15

Alloy Composition

Carbon (C), % 0.060 to 0.15
0 to 0.080
Chromium (Cr), % 12 to 14
19 to 21.5
Iron (Fe), % 82.4 to 87.8
59.4 to 67.4
Manganese (Mn), % 0 to 1.5
8.0 to 10
Molybdenum (Mo), % 0 to 0.6
0
Nickel (Ni), % 0
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.030