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EN 1.4859 Stainless Steel vs. EN 1.4740 Stainless Steel

Both EN 1.4859 stainless steel and EN 1.4740 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4859 stainless steel and the bottom bar is EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
22
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 560
410
Maximum Temperature: Mechanical, °C 1050
900
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 13
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 36
9.5
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 6.2
2.3
Embodied Energy, MJ/kg 88
32
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 21
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 3.4
4.8

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.3 to 0.5
Chromium (Cr), % 19 to 21
16 to 19
Iron (Fe), % 40.3 to 49
75.4 to 82.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 31 to 33
0 to 1.0
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.5 to 1.5
1.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030