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EN 1.4547 Stainless Steel vs. EN 1.4424 Stainless Steel

Both EN 1.4547 stainless steel and EN 1.4424 stainless steel are iron alloys. They have 81% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4547 stainless steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
28
Fatigue Strength, MPa 290
350 to 370
Impact Strength: V-Notched Charpy, J 90
90 to 91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Shear Strength, MPa 510
520
Tensile Strength: Ultimate (UTS), MPa 750
800
Tensile Strength: Yield (Proof), MPa 340
480 to 500

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
960
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 28
15
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.6
3.4
Embodied Energy, MJ/kg 75
46
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 45
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 290
580 to 640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 3.8
3.5
Thermal Shock Resistance, points 16
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19.5 to 20.5
18 to 19
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51 to 56.3
68.6 to 72.4
Manganese (Mn), % 0 to 1.0
1.2 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
2.5 to 3.0
Nickel (Ni), % 17.5 to 18.5
4.5 to 5.2
Nitrogen (N), % 0.18 to 0.25
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