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EN 1.7227 Steel vs. S44700 Stainless Steel

Both EN 1.7227 steel and S44700 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is EN 1.7227 steel and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.27
Rockwell C Hardness 50 to 57
17
Shear Modulus, GPa 73
82
Tensile Strength: Ultimate (UTS), MPa 540 to 1850
600

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
3.6
Embodied Energy, MJ/kg 20
49
Embodied Water, L/kg 51
180

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 65
21
Strength to Weight: Bending, points 19 to 43
20
Thermal Shock Resistance, points 16 to 54
19

Alloy Composition

Carbon (C), % 0.38 to 0.45
0 to 0.010
Chromium (Cr), % 0.9 to 1.2
28 to 30
Copper (Cu), % 0 to 0.25
0 to 0.15
Iron (Fe), % 96.5 to 98
64.9 to 68.5
Manganese (Mn), % 0.6 to 0.9
0 to 0.3
Molybdenum (Mo), % 0.15 to 0.3
3.5 to 4.2
Nickel (Ni), % 0
0 to 0.15
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.3
0 to 0.2
Sulfur (S), % 0.020 to 0.040
0 to 0.020