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EN 1.3549 Stainless Steel vs. EN 1.4424 Stainless Steel

Both EN 1.3549 stainless steel and EN 1.4424 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3549 stainless steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 730
800

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 400
420
Maximum Temperature: Mechanical, °C 910
960
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
13
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.6
3.4
Embodied Energy, MJ/kg 37
46
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 22
29
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
29
Strength to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 5.6
3.5
Thermal Shock Resistance, points 26
23

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.030
Chromium (Cr), % 17 to 19
18 to 19
Iron (Fe), % 77.5 to 82
68.6 to 72.4
Manganese (Mn), % 0 to 1.0
1.2 to 2.0
Molybdenum (Mo), % 0.9 to 1.3
2.5 to 3.0
Nickel (Ni), % 0
4.5 to 5.2
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
1.4 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.070 to 0.12
0