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EN 1.4618 Stainless Steel vs. EN 1.6554 Steel

Both EN 1.4618 stainless steel and EN 1.6554 steel are iron alloys. They have 71% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4618 stainless steel and the bottom bar is EN 1.6554 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
230 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
17 to 21
Fatigue Strength, MPa 240 to 250
380 to 520
Impact Strength: V-Notched Charpy, J 90 to 91
30 to 45
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 680 to 700
780 to 930
Tensile Strength: Yield (Proof), MPa 250 to 260
550 to 790

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 900
420
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.7
1.7
Embodied Energy, MJ/kg 39
22
Embodied Water, L/kg 150
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
810 to 1650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 25
27 to 33
Strength to Weight: Bending, points 22 to 23
24 to 27
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 15 to 16
23 to 27

Alloy Composition

Carbon (C), % 0 to 0.1
0.23 to 0.28
Chromium (Cr), % 16.5 to 18.5
0.7 to 0.9
Copper (Cu), % 1.0 to 2.5
0 to 0.3
Iron (Fe), % 62.7 to 72.5
94.6 to 97.3
Manganese (Mn), % 5.5 to 9.5
0.6 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 4.5 to 5.5
1.0 to 2.0
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.025
Vanadium (V), % 0
0 to 0.030

Comparable Variants