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EN 1.7220 Steel vs. S32750 Stainless Steel

Both EN 1.7220 steel and S32750 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 26 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 1.7220 steel and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 290
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.27
Rockwell C Hardness 45 to 53
28
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 520 to 1720
860

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
4.1
Embodied Energy, MJ/kg 20
56
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 18 to 61
31
Strength to Weight: Bending, points 18 to 41
26
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 15 to 50
25

Alloy Composition

Carbon (C), % 0.3 to 0.37
0 to 0.030
Chromium (Cr), % 0.9 to 1.2
24 to 26
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 96.8 to 98.1
58.1 to 66.8
Manganese (Mn), % 0.6 to 0.9
0 to 1.2
Molybdenum (Mo), % 0.15 to 0.3
3.0 to 5.0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.8
Sulfur (S), % 0 to 0.035
0 to 0.020