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EN 1.4422 Stainless Steel vs. EN 1.4558 Stainless Steel

Both EN 1.4422 stainless steel and EN 1.4558 stainless steel are iron alloys. They have 61% 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 1.4558 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
39
Fatigue Strength, MPa 380
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 520
350
Tensile Strength: Ultimate (UTS), MPa 850
510
Tensile Strength: Yield (Proof), MPa 630
200

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
480
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
31
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.7
5.5
Embodied Energy, MJ/kg 37
77
Embodied Water, L/kg 110
200

Common Calculations

PREN (Pitting Resistance) 17
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
160
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
18
Strength to Weight: Bending, points 25
18
Thermal Diffusivity, mm2/s 4.3
3.1
Thermal Shock Resistance, points 31
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.45
Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 11 to 13
20 to 23
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 76.8 to 83.5
39.2 to 47.9
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 4.0 to 5.0
32 to 35
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.0030
0 to 0.015
Titanium (Ti), % 0
0 to 0.6