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EN 1.4401 Stainless Steel vs. EN 1.4821 Stainless Steel

Both EN 1.4401 stainless steel and EN 1.4821 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 33 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 1.4401 stainless steel and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 40
18
Fatigue Strength, MPa 200 to 320
280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
79
Shear Strength, MPa 410 to 550
450
Tensile Strength: Ultimate (UTS), MPa 600 to 900
730
Tensile Strength: Yield (Proof), MPa 230 to 570
450

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 950
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
15
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 3.8
2.9
Embodied Energy, MJ/kg 52
41
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 26
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21 to 32
26
Strength to Weight: Bending, points 20 to 26
23
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 13 to 20
21

Alloy Composition

Carbon (C), % 0 to 0.070
0.1 to 0.2
Chromium (Cr), % 16.5 to 18.5
24.5 to 26.5
Iron (Fe), % 62.8 to 71.5
64.2 to 71.1
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 10 to 13
3.5 to 5.5
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0.8 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015