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EN 1.4655 Stainless Steel vs. EN 1.6554 Steel

Both EN 1.4655 stainless steel and EN 1.6554 steel are iron alloys. They have 72% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4655 stainless steel and the bottom bar is EN 1.6554 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23 to 25
17 to 21
Fatigue Strength, MPa 320
380 to 520
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 720 to 730
780 to 930
Tensile Strength: Yield (Proof), MPa 450 to 480
550 to 790

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1050
420
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.9
1.7
Embodied Energy, MJ/kg 41
22
Embodied Water, L/kg 160
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 580
810 to 1650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
27 to 33
Strength to Weight: Bending, points 23
24 to 27
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 20
23 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.23 to 0.28
Chromium (Cr), % 22 to 24
0.7 to 0.9
Copper (Cu), % 1.0 to 3.0
0 to 0.3
Iron (Fe), % 63.6 to 73.4
94.6 to 97.3
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Molybdenum (Mo), % 0.1 to 0.6
0.2 to 0.3
Nickel (Ni), % 3.5 to 5.5
1.0 to 2.0
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.025
Vanadium (V), % 0
0 to 0.030

Comparable Variants