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S21904 Stainless Steel vs. EN 1.4104 Stainless Steel

Both S21904 stainless steel and EN 1.4104 stainless steel are iron alloys. They have 81% 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 S21904 stainless steel and the bottom bar is EN 1.4104 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17 to 51
11 to 23
Fatigue Strength, MPa 380 to 550
230 to 310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 510 to 620
400 to 450
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
630 to 750
Tensile Strength: Yield (Proof), MPa 390 to 910
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 980
860
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
25
Thermal Expansion, µm/m-K 17
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 15
8.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.0
2.2
Embodied Energy, MJ/kg 43
30
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 25
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
77 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
310 to 800
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 36
23 to 27
Strength to Weight: Bending, points 23 to 29
21 to 24
Thermal Diffusivity, mm2/s 3.8
6.7
Thermal Shock Resistance, points 15 to 21
22 to 27

Alloy Composition

Carbon (C), % 0 to 0.040
0.1 to 0.17
Chromium (Cr), % 19 to 21.5
15.5 to 17.5
Iron (Fe), % 59.5 to 67.4
78.8 to 84.1
Manganese (Mn), % 8.0 to 10
0 to 1.5
Molybdenum (Mo), % 0
0.2 to 0.6
Nickel (Ni), % 5.5 to 7.5
0
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35

Comparable Variants