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EN 1.4490 Stainless Steel vs. EN 1.4659 Stainless Steel

Both EN 1.4490 stainless steel and EN 1.4659 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 74% 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 1.4490 stainless steel and the bottom bar is EN 1.4659 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 34
49
Fatigue Strength, MPa 210
460
Impact Strength: V-Notched Charpy, J 90
94
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
81
Tensile Strength: Ultimate (UTS), MPa 560
900
Tensile Strength: Yield (Proof), MPa 260
480

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
440
Maximum Temperature: Mechanical, °C 990
1100
Melting Completion (Liquidus), °C 1440
1480
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 3.7
6.5
Embodied Energy, MJ/kg 52
89
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 29
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
370
Resilience: Unit (Modulus of Resilience), kJ/m3 170
550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
31
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 4.1
3.2
Thermal Shock Resistance, points 16
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 18 to 20
23 to 25
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 61.7 to 70.9
35.7 to 45.7
Manganese (Mn), % 0 to 2.0
2.0 to 4.0
Molybdenum (Mo), % 2.0 to 2.5
5.5 to 6.5
Nickel (Ni), % 9.0 to 12
21 to 23
Nitrogen (N), % 0.12 to 0.2
0.35 to 0.5
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
1.5 to 2.5