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EN 1.4424 Stainless Steel vs. EN 1.4615 Stainless Steel

Both EN 1.4424 stainless steel and EN 1.4615 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4424 stainless steel and the bottom bar is EN 1.4615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
50
Fatigue Strength, MPa 350 to 370
190
Impact Strength: V-Notched Charpy, J 90 to 91
91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 520
360
Tensile Strength: Ultimate (UTS), MPa 800
500
Tensile Strength: Yield (Proof), MPa 480 to 500
200

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 420
400
Maximum Temperature: Mechanical, °C 960
840
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1390
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.8
Embodied Energy, MJ/kg 46
40
Embodied Water, L/kg 140
140

Common Calculations

PREN (Pitting Resistance) 29
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
200
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 640
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
18
Strength to Weight: Bending, points 25
18
Thermal Diffusivity, mm2/s 3.5
4.1
Thermal Shock Resistance, points 23
11

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 18 to 19
14 to 16
Copper (Cu), % 0
2.0 to 4.0
Iron (Fe), % 68.6 to 72.4
63.1 to 72.5
Manganese (Mn), % 1.2 to 2.0
7.0 to 9.0
Molybdenum (Mo), % 2.5 to 3.0
0 to 0.8
Nickel (Ni), % 4.5 to 5.2
4.5 to 6.0
Nitrogen (N), % 0.050 to 0.1
0.020 to 0.060
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 1.4 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010