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EN 1.4550 Stainless Steel vs. EN 1.4563 Stainless Steel

Both EN 1.4550 stainless steel and EN 1.4563 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 66% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4550 stainless steel and the bottom bar is EN 1.4563 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
40
Fatigue Strength, MPa 210
210
Impact Strength: V-Notched Charpy, J 90
91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 430
420
Tensile Strength: Ultimate (UTS), MPa 620
620
Tensile Strength: Yield (Proof), MPa 230
250

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 480
460
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 18
36
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.6
6.3
Embodied Energy, MJ/kg 51
87
Embodied Water, L/kg 140
240

Common Calculations

PREN (Pitting Resistance) 18
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
200
Resilience: Unit (Modulus of Resilience), kJ/m3 140
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 14
13

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 17 to 19
26 to 28
Copper (Cu), % 0
0.7 to 1.5
Iron (Fe), % 64.9 to 74
31.6 to 40.3
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 9.0 to 12
30 to 32
Niobium (Nb), % 0 to 1.0
0
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010