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EN 1.4422 Stainless Steel vs. EN 1.4518 Stainless Steel

Both EN 1.4422 stainless steel and EN 1.4518 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 (1, 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 1.4518 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
34
Fatigue Strength, MPa 380
160
Impact Strength: V-Notched Charpy, J 110
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 850
490
Tensile Strength: Yield (Proof), MPa 630
210

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 760
1000
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
20
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.7
4.0
Embodied Energy, MJ/kg 37
55
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 17
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 25
18
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 31
14

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 11 to 13
18 to 20
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 76.8 to 83.5
61.4 to 70
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 1.3 to 1.8
3.0 to 3.5
Nickel (Ni), % 4.0 to 5.0
9.0 to 12
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.0030
0 to 0.030