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EN 1.4557 Stainless Steel vs. EN 1.4422 Stainless Steel

Both EN 1.4557 stainless steel and EN 1.4422 stainless steel are iron alloys. They have 72% 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 1.4557 stainless steel and the bottom bar is EN 1.4422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
17
Fatigue Strength, MPa 260
380
Impact Strength: V-Notched Charpy, J 56
110
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 560
850
Tensile Strength: Yield (Proof), MPa 300
630

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 420
390
Maximum Temperature: Mechanical, °C 1090
760
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.6
2.7
Embodied Energy, MJ/kg 76
37
Embodied Water, L/kg 190
110

Common Calculations

PREN (Pitting Resistance) 45
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
30
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 12
31

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.020
Chromium (Cr), % 19.5 to 20.5
11 to 13
Copper (Cu), % 0.5 to 1.0
0.2 to 0.8
Iron (Fe), % 49.5 to 56.3
76.8 to 83.5
Manganese (Mn), % 0 to 1.2
0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
1.3 to 1.8
Nickel (Ni), % 17.5 to 19.5
4.0 to 5.0
Nitrogen (N), % 0.18 to 0.24
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.0030