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EN 1.4374 Stainless Steel vs. EN 1.4652 Stainless Steel

Both EN 1.4374 stainless steel and EN 1.4652 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 70% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4374 stainless steel and the bottom bar is EN 1.4652 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
45
Fatigue Strength, MPa 340
450
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Shear Strength, MPa 550
610
Tensile Strength: Ultimate (UTS), MPa 800
880
Tensile Strength: Yield (Proof), MPa 400
490

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 920
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
9.8
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
34
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.9
6.4
Embodied Energy, MJ/kg 42
87
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 23
57
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
340
Resilience: Unit (Modulus of Resilience), kJ/m3 400
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
30
Strength to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 4.0
2.6
Thermal Shock Resistance, points 17
20

Alloy Composition

Carbon (C), % 0.050 to 0.1
0 to 0.020
Chromium (Cr), % 17.5 to 18.5
23 to 25
Copper (Cu), % 0 to 0.4
0.3 to 0.6
Iron (Fe), % 63.5 to 67.9
38.3 to 46.3
Manganese (Mn), % 9.0 to 10
2.0 to 4.0
Molybdenum (Mo), % 0 to 0.5
7.0 to 8.0
Nickel (Ni), % 5.0 to 6.0
21 to 23
Nitrogen (N), % 0.25 to 0.32
0.45 to 0.55
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.3 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0050