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EN 1.4749 Stainless Steel vs. EN 1.3549 Stainless Steel

Both EN 1.4749 stainless steel and EN 1.3549 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4749 stainless steel and the bottom bar is EN 1.3549 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 600
730

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
400
Maximum Temperature: Mechanical, °C 1100
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 17
21
Thermal Expansion, µm/m-K 9.6
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
10
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.6
Embodied Energy, MJ/kg 36
37
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 31
22
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 22
27
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 4.6
5.6
Thermal Shock Resistance, points 22
26

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.85 to 1.0
Chromium (Cr), % 26 to 29
17 to 19
Iron (Fe), % 68.5 to 73.7
77.5 to 82
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.070 to 0.12