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EN 1.4539 Stainless Steel vs. EN 1.4347 Stainless Steel

Both EN 1.4539 stainless steel and EN 1.4347 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 75% 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 1.4539 stainless steel and the bottom bar is EN 1.4347 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 38
23
Fatigue Strength, MPa 220
320
Impact Strength: V-Notched Charpy, J 90
34
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 630
660
Tensile Strength: Yield (Proof), MPa 260
480

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 460
490
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
16
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 5.7
3.1
Embodied Energy, MJ/kg 78
44
Embodied Water, L/kg 200
170

Common Calculations

PREN (Pitting Resistance) 36
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140
Resilience: Unit (Modulus of Resilience), kJ/m3 160
570
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 14
19

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.050
Chromium (Cr), % 19 to 21
25 to 27
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 43.1 to 51.8
62.2 to 69.4
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 24 to 26
5.5 to 7.5
Nitrogen (N), % 0 to 0.15
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.020