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EN 1.4374 Stainless Steel vs. EN 1.4864 Stainless Steel

Both EN 1.4374 stainless steel and EN 1.4864 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 69% 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 1.4374 stainless steel and the bottom bar is EN 1.4864 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
33
Fatigue Strength, MPa 340
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
75
Shear Strength, MPa 550
430
Tensile Strength: Ultimate (UTS), MPa 800
650
Tensile Strength: Yield (Proof), MPa 400
260

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 920
1100
Melting Completion (Liquidus), °C 1400
1390
Melting Onset (Solidus), °C 1360
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14
30
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.9
5.3
Embodied Energy, MJ/kg 42
75
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 23
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
170
Resilience: Unit (Modulus of Resilience), kJ/m3 400
170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
23
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 4.0
3.3
Thermal Shock Resistance, points 17
17

Alloy Composition

Carbon (C), % 0.050 to 0.1
0 to 0.15
Chromium (Cr), % 17.5 to 18.5
15 to 17
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 63.5 to 67.9
41.7 to 51
Manganese (Mn), % 9.0 to 10
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 5.0 to 6.0
33 to 37
Nitrogen (N), % 0.25 to 0.32
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.3 to 0.6
1.0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.015