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EN 1.7321 Steel vs. EN 1.4854 Stainless Steel

Both EN 1.7321 steel and EN 1.4854 stainless steel are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 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 1.7321 steel and the bottom bar is EN 1.4854 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 170
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 490 to 1460
750

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 410
1170
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
11
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
34
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.5
5.7
Embodied Energy, MJ/kg 20
81
Embodied Water, L/kg 50
220

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 52
26
Strength to Weight: Bending, points 18 to 36
23
Thermal Diffusivity, mm2/s 12
2.9
Thermal Shock Resistance, points 14 to 43
18

Alloy Composition

Carbon (C), % 0.17 to 0.23
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0.3 to 0.6
24 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 97.1 to 98.4
33.6 to 40.6
Manganese (Mn), % 0.7 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.5
0
Nickel (Ni), % 0
34 to 36
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
1.2 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.015