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EN 1.4458 Stainless Steel vs. EN 1.4669 Stainless Steel

Both EN 1.4458 stainless steel and EN 1.4669 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 72% 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 1.4458 stainless steel and the bottom bar is EN 1.4669 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
28
Fatigue Strength, MPa 150
330
Impact Strength: V-Notched Charpy, J 67
110
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 510
780
Tensile Strength: Yield (Proof), MPa 190
450

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 1100
1030
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 30
13
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.4
2.6
Embodied Energy, MJ/kg 75
38
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 30
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
190
Resilience: Unit (Modulus of Resilience), kJ/m3 89
510
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
28
Strength to Weight: Bending, points 18
24
Thermal Diffusivity, mm2/s 4.2
4.0
Thermal Shock Resistance, points 12
21

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.045
Chromium (Cr), % 19 to 22
21.5 to 24
Copper (Cu), % 0 to 2.0
1.6 to 3.0
Iron (Fe), % 40.2 to 53
65.2 to 74.8
Manganese (Mn), % 0 to 2.0
1.0 to 3.0
Molybdenum (Mo), % 2.0 to 2.5
0 to 0.5
Nickel (Ni), % 26 to 30
1.0 to 3.0
Nitrogen (N), % 0 to 0.2
0.12 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030