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EN 1.4539 Stainless Steel vs. EN 1.4740 Stainless Steel

Both EN 1.4539 stainless steel and EN 1.4740 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4539 stainless steel and the bottom bar is EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 38
22
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 460
490
Thermal Conductivity, W/m-K 12
18
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.1
7.6
Embodied Carbon, kg CO2/kg material 5.7
2.3
Embodied Energy, MJ/kg 78
32
Embodied Water, L/kg 200
120

Common Calculations

PREN (Pitting Resistance) 36
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 3.2
4.8

Alloy Composition

Carbon (C), % 0 to 0.020
0.3 to 0.5
Chromium (Cr), % 19 to 21
16 to 19
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 43.1 to 51.8
75.4 to 82.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
0 to 0.5
Nickel (Ni), % 24 to 26
0 to 1.0
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.7
1.0 to 2.5
Sulfur (S), % 0 to 0.010
0 to 0.030