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EN 1.4557 Stainless Steel vs. EN 1.4520 Stainless Steel

Both EN 1.4557 stainless steel and EN 1.4520 stainless steel are iron alloys. They have 70% 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 1.4520 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
26
Fatigue Strength, MPa 260
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 560
480
Tensile Strength: Yield (Proof), MPa 300
220

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
500
Maximum Temperature: Mechanical, °C 1090
870
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 15
20
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 29
8.5
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.2
Embodied Energy, MJ/kg 76
32
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 45
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
100
Resilience: Unit (Modulus of Resilience), kJ/m3 210
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 4.0
5.4
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.025
Chromium (Cr), % 19.5 to 20.5
16 to 18
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
80.1 to 83.9
Manganese (Mn), % 0 to 1.2
0 to 0.5
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
0
Nitrogen (N), % 0.18 to 0.24
0 to 0.015
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 0.015
Titanium (Ti), % 0
0.15 to 0.8