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EN 1.4618 Stainless Steel vs. EN 1.4905 Stainless Steel

Both EN 1.4618 stainless steel and EN 1.4905 stainless steel are iron alloys. They have 78% 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 1.4618 stainless steel and the bottom bar is EN 1.4905 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
19
Fatigue Strength, MPa 240 to 250
330
Impact Strength: V-Notched Charpy, J 90 to 91
38
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 480 to 500
460
Tensile Strength: Ultimate (UTS), MPa 680 to 700
740
Tensile Strength: Yield (Proof), MPa 250 to 260
510

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
380
Maximum Temperature: Mechanical, °C 900
660
Melting Completion (Liquidus), °C 1400
1480
Melting Onset (Solidus), °C 1360
1440
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 39
40
Embodied Water, L/kg 150
90

Common Calculations

PREN (Pitting Resistance) 19
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
130
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
680
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 25
26
Strength to Weight: Bending, points 22 to 23
23
Thermal Diffusivity, mm2/s 4.0
7.0
Thermal Shock Resistance, points 15 to 16
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Boron (B), % 0
0.00050 to 0.0050
Carbon (C), % 0 to 0.1
0.090 to 0.13
Chromium (Cr), % 16.5 to 18.5
8.5 to 9.5
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
86.2 to 88.8
Manganese (Mn), % 5.5 to 9.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 4.5 to 5.5
0.1 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0 to 0.15
0.050 to 0.090
Phosphorus (P), % 0 to 0.070
0 to 0.020
Silicon (Si), % 0 to 1.0
0.1 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010
Tungsten (W), % 0
0.9 to 1.1
Vanadium (V), % 0
0.18 to 0.25