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EN 1.4729 Stainless Steel vs. EN 1.3549 Stainless Steel

Both EN 1.4729 stainless steel and EN 1.3549 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4729 stainless steel and the bottom bar is EN 1.3549 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 390
400
Maximum Temperature: Mechanical, °C 850
910
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 24
21
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
10
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.1
2.6
Embodied Energy, MJ/kg 29
37
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 14
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 6.5
5.6

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.85 to 1.0
Chromium (Cr), % 12 to 14
17 to 19
Iron (Fe), % 80.4 to 86.7
77.5 to 82
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.9 to 1.3
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.070 to 0.12