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EN 1.4859 Stainless Steel vs. EN 1.4374 Stainless Steel

Both EN 1.4859 stainless steel and EN 1.4374 stainless steel are iron alloys. They have 70% 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 1.4859 stainless steel and the bottom bar is EN 1.4374 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 140
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 490
800
Tensile Strength: Yield (Proof), MPa 210
400

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 560
410
Maximum Temperature: Mechanical, °C 1050
920
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1360
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 36
14
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 6.2
2.9
Embodied Energy, MJ/kg 88
42
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 21
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
270
Resilience: Unit (Modulus of Resilience), kJ/m3 110
400
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 17
25
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 11
17

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.050 to 0.1
Chromium (Cr), % 19 to 21
17.5 to 18.5
Copper (Cu), % 0
0 to 0.4
Iron (Fe), % 40.3 to 49
63.5 to 67.9
Manganese (Mn), % 0 to 2.0
9.0 to 10
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 31 to 33
5.0 to 6.0
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0.25 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.5 to 1.5
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030