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EN 1.4028 Stainless Steel vs. S21904 Stainless Steel

Both EN 1.4028 stainless steel and S21904 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 (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4028 stainless steel and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
17 to 51
Fatigue Strength, MPa 230 to 400
380 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 410 to 550
510 to 620
Tensile Strength: Ultimate (UTS), MPa 660 to 930
700 to 1000
Tensile Strength: Yield (Proof), MPa 390 to 730
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
430
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 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
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 1.9
3.0
Embodied Energy, MJ/kg 27
43
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 13
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
380 to 2070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 33
25 to 36
Strength to Weight: Bending, points 22 to 27
23 to 29
Thermal Diffusivity, mm2/s 8.1
3.8
Thermal Shock Resistance, points 23 to 32
15 to 21

Alloy Composition

Carbon (C), % 0.26 to 0.35
0 to 0.040
Chromium (Cr), % 12 to 14
19 to 21.5
Iron (Fe), % 83.1 to 87.7
59.5 to 67.4
Manganese (Mn), % 0 to 1.5
8.0 to 10
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 to 0.015
0 to 0.030

Comparable Variants