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EN 1.4557 Stainless Steel vs. EN 1.4424 Stainless Steel

Both EN 1.4557 stainless steel and EN 1.4424 stainless steel are iron alloys. They have 80% 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 1.4557 stainless steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
28
Fatigue Strength, MPa 260
350 to 370
Impact Strength: V-Notched Charpy, J 56
90 to 91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 560
800
Tensile Strength: Yield (Proof), MPa 300
480 to 500

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
960
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 29
15
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.6
3.4
Embodied Energy, MJ/kg 76
46
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 45
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 210
580 to 640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
29
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 4.0
3.5
Thermal Shock Resistance, points 12
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19.5 to 20.5
18 to 19
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
68.6 to 72.4
Manganese (Mn), % 0 to 1.2
1.2 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
2.5 to 3.0
Nickel (Ni), % 17.5 to 19.5
4.5 to 5.2
Nitrogen (N), % 0.18 to 0.24
0.050 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.0
1.4 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.015