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S44725 Stainless Steel vs. EN 1.7227 Steel

Both S44725 stainless steel and EN 1.7227 steel are iron alloys. They have 72% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is S44725 stainless steel and the bottom bar is EN 1.7227 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 500
540 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
46
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.5
Embodied Energy, MJ/kg 44
20
Embodied Water, L/kg 170
51

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
19 to 65
Strength to Weight: Bending, points 18
19 to 43
Thermal Diffusivity, mm2/s 4.6
12
Thermal Shock Resistance, points 16
16 to 54

Alloy Composition

Carbon (C), % 0 to 0.015
0.38 to 0.45
Chromium (Cr), % 25 to 28.5
0.9 to 1.2
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 67.6 to 73.5
96.5 to 98
Manganese (Mn), % 0 to 0.4
0.6 to 0.9
Molybdenum (Mo), % 1.5 to 2.5
0.15 to 0.3
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0 to 0.26
0
Nitrogen (N), % 0 to 0.018
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.040
0 to 0.3
Sulfur (S), % 0 to 0.020
0.020 to 0.040
Titanium (Ti), % 0 to 0.26
0