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EN 1.4408 Stainless Steel vs. EN 1.4597 Stainless Steel

Both EN 1.4408 stainless steel and EN 1.4597 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 87% 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 1.4408 stainless steel and the bottom bar is EN 1.4597 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
45
Fatigue Strength, MPa 170
300
Impact Strength: V-Notched Charpy, J 67
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 510
680
Tensile Strength: Yield (Proof), MPa 210
330

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 990
860
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1390
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 18
11
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.7
2.5
Embodied Energy, MJ/kg 52
36
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 26
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
250
Resilience: Unit (Modulus of Resilience), kJ/m3 110
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
25
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 3.9
4.1
Thermal Shock Resistance, points 11
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.1
Chromium (Cr), % 18 to 20
15 to 18
Copper (Cu), % 0
2.0 to 3.5
Iron (Fe), % 62.4 to 71
63 to 76.4
Manganese (Mn), % 0 to 1.5
6.5 to 9.0
Molybdenum (Mo), % 2.0 to 2.5
0 to 1.0
Nickel (Ni), % 9.0 to 12
0 to 3.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030