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EN 1.4104 Stainless Steel vs. EN 1.4821 Stainless Steel

Both EN 1.4104 stainless steel and EN 1.4821 stainless steel are iron alloys. They have 86% 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 1.4104 stainless steel and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 23
18
Fatigue Strength, MPa 230 to 310
280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 400 to 450
450
Tensile Strength: Ultimate (UTS), MPa 630 to 750
730
Tensile Strength: Yield (Proof), MPa 350 to 560
450

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 860
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 25
17
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
15
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.2
2.9
Embodied Energy, MJ/kg 30
41
Embodied Water, L/kg 120
160

Common Calculations

PREN (Pitting Resistance) 18
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 800
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 23 to 27
26
Strength to Weight: Bending, points 21 to 24
23
Thermal Diffusivity, mm2/s 6.7
4.6
Thermal Shock Resistance, points 22 to 27
21

Alloy Composition

Carbon (C), % 0.1 to 0.17
0.1 to 0.2
Chromium (Cr), % 15.5 to 17.5
24.5 to 26.5
Iron (Fe), % 78.8 to 84.1
64.2 to 71.1
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0.2 to 0.6
0
Nickel (Ni), % 0
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0.8 to 1.5
Sulfur (S), % 0.15 to 0.35
0 to 0.015