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EN 1.4024 Stainless Steel vs. EN 1.4590 Stainless Steel

Both EN 1.4024 stainless steel and EN 1.4590 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4024 stainless steel and the bottom bar is EN 1.4590 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 15 to 22
26
Fatigue Strength, MPa 220 to 300
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 370 to 460
310
Tensile Strength: Ultimate (UTS), MPa 590 to 750
480
Tensile Strength: Yield (Proof), MPa 330 to 510
270

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 390
470
Maximum Temperature: Mechanical, °C 760
860
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
26
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
11
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.9
2.5
Embodied Energy, MJ/kg 27
37
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 13
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 660
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 27
17
Strength to Weight: Bending, points 20 to 24
18
Thermal Diffusivity, mm2/s 8.1
7.0
Thermal Shock Resistance, points 21 to 26
17

Alloy Composition

Carbon (C), % 0.12 to 0.17
0 to 0.030
Chromium (Cr), % 12 to 14
16 to 17.5
Iron (Fe), % 83.8 to 87.9
79.7 to 83.7
Manganese (Mn), % 0 to 1.0
0 to 1.0
Niobium (Nb), % 0
0.35 to 0.55
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Zirconium (Zr), % 0
0 to 0.15