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EN 1.4659 Stainless Steel vs. EN 1.4424 Stainless Steel

Both EN 1.4659 stainless steel and EN 1.4424 stainless steel are iron alloys. They have 69% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4659 stainless steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
230
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 49
28
Fatigue Strength, MPa 460
350 to 370
Impact Strength: V-Notched Charpy, J 94
90 to 91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
78
Shear Strength, MPa 640
520
Tensile Strength: Ultimate (UTS), MPa 900
800
Tensile Strength: Yield (Proof), MPa 480
480 to 500

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1480
1430
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
13
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
15
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 6.5
3.4
Embodied Energy, MJ/kg 89
46
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 54
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 370
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 550
580 to 640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 31
29
Strength to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 3.2
3.5
Thermal Shock Resistance, points 19
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 23 to 25
18 to 19
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 35.7 to 45.7
68.6 to 72.4
Manganese (Mn), % 2.0 to 4.0
1.2 to 2.0
Molybdenum (Mo), % 5.5 to 6.5
2.5 to 3.0
Nickel (Ni), % 21 to 23
4.5 to 5.2
Nitrogen (N), % 0.35 to 0.5
0.050 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.7
1.4 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Tungsten (W), % 1.5 to 2.5
0