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EN 1.4935 Stainless Steel vs. EN 1.3549 Stainless Steel

Both EN 1.4935 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 26 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 1.4935 stainless steel and the bottom bar is EN 1.3549 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 780 to 880
730

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 380
400
Maximum Temperature: Mechanical, °C 740
910
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
21
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.6
Embodied Energy, MJ/kg 42
37
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 16
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 31
27
Strength to Weight: Bending, points 24 to 26
24
Thermal Diffusivity, mm2/s 6.5
5.6
Thermal Shock Resistance, points 27 to 30
26

Alloy Composition

Carbon (C), % 0.17 to 0.24
0.85 to 1.0
Chromium (Cr), % 11 to 12.5
17 to 19
Iron (Fe), % 83 to 86.7
77.5 to 82
Manganese (Mn), % 0.3 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.2
0.9 to 1.3
Nickel (Ni), % 0.3 to 0.8
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0.4 to 0.6
0
Vanadium (V), % 0.2 to 0.35
0.070 to 0.12