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EN 1.3551 Steel vs. EN 1.4525 Stainless Steel

Both EN 1.3551 steel and EN 1.4525 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 25 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 1.3551 steel and the bottom bar is EN 1.4525 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 720
1030 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 530
860
Melting Completion (Liquidus), °C 1490
1430
Melting Onset (Solidus), °C 1450
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 36
18
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.9
2.8
Embodied Energy, MJ/kg 71
39
Embodied Water, L/kg 82
130

Common Calculations

PREN (Pitting Resistance) 18
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
36 to 45
Strength to Weight: Bending, points 23
29 to 33
Thermal Diffusivity, mm2/s 9.8
4.7
Thermal Shock Resistance, points 21
34 to 41

Alloy Composition

Carbon (C), % 0.77 to 0.85
0 to 0.070
Chromium (Cr), % 3.9 to 4.3
15 to 17
Copper (Cu), % 0 to 0.3
2.5 to 4.0
Iron (Fe), % 88.8 to 91.1
70.4 to 79
Manganese (Mn), % 0.15 to 0.35
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
0 to 0.8
Nickel (Ni), % 0
3.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0