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EN 1.4422 Stainless Steel vs. EN 1.4821 Stainless Steel

Both EN 1.4422 stainless steel and EN 1.4821 stainless steel are iron alloys. They have 85% 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 1.4422 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, % 17
18
Fatigue Strength, MPa 380
280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
79
Shear Strength, MPa 520
450
Tensile Strength: Ultimate (UTS), MPa 850
730
Tensile Strength: Yield (Proof), MPa 630
450

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 10
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 11
15
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 37
41
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 17
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 30
26
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.3
4.6
Thermal Shock Resistance, points 31
21

Alloy Composition

Carbon (C), % 0 to 0.020
0.1 to 0.2
Chromium (Cr), % 11 to 13
24.5 to 26.5
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 76.8 to 83.5
64.2 to 71.1
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 4.0 to 5.0
3.5 to 5.5
Nitrogen (N), % 0 to 0.020
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0.8 to 1.5
Sulfur (S), % 0 to 0.0030
0 to 0.015