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EN 1.3555 Steel vs. S44725 Stainless Steel

Both EN 1.3555 steel and S44725 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% 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 1.3555 steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 75
81
Tensile Strength: Ultimate (UTS), MPa 770
500

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 540
1100
Melting Completion (Liquidus), °C 1500
1450
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.6
3.1
Embodied Energy, MJ/kg 81
44
Embodied Water, L/kg 90
170

Common Calculations

PREN (Pitting Resistance) 18
33
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
18
Strength to Weight: Bending, points 23
18
Thermal Shock Resistance, points 22
16

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.015
Chromium (Cr), % 3.9 to 4.3
25 to 28.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 85.4 to 87.7
67.6 to 73.5
Manganese (Mn), % 0.15 to 0.35
0 to 0.4
Molybdenum (Mo), % 4.0 to 4.5
1.5 to 2.5
Nickel (Ni), % 3.2 to 3.6
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.1 to 0.25
0 to 0.040
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0
0 to 0.26
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0