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EN 1.7720 Steel vs. N08366 Stainless Steel

Both EN 1.7720 steel and N08366 stainless steel are iron alloys. They have 48% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.7720 steel and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 19
34
Fatigue Strength, MPa 230
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 590
590
Tensile Strength: Yield (Proof), MPa 340
240

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 40
13
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
33
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.2
6.2
Embodied Energy, MJ/kg 30
84
Embodied Water, L/kg 51
200

Common Calculations

PREN (Pitting Resistance) 2.1
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
160
Resilience: Unit (Modulus of Resilience), kJ/m3 300
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 11
3.4
Thermal Shock Resistance, points 17
13

Alloy Composition

Carbon (C), % 0.1 to 0.15
0 to 0.035
Chromium (Cr), % 0.3 to 0.5
20 to 22
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.6 to 98.6
42.4 to 50.5
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.6
6.0 to 7.0
Nickel (Ni), % 0 to 0.4
23.5 to 25.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0.22 to 0.3
0