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EN 1.7709 Steel vs. N08801 Stainless Steel

Both EN 1.7709 steel and N08801 stainless steel are iron alloys. They have 47% of their average alloy composition in common. There are 25 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 1.7709 steel and the bottom bar is N08801 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 650 to 780
860

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1090
Melting Completion (Liquidus), °C 1470
1390
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 33
12
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.3
5.5
Embodied Energy, MJ/kg 32
79
Embodied Water, L/kg 56
200

Common Calculations

PREN (Pitting Resistance) 3.6
21
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 27
30
Strength to Weight: Bending, points 21 to 24
25
Thermal Diffusivity, mm2/s 8.9
3.3
Thermal Shock Resistance, points 22 to 26
20

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0 to 0.1
Chromium (Cr), % 1.2 to 1.5
19 to 22
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 95.2 to 97.5
39.5 to 50.3
Manganese (Mn), % 0.4 to 0.8
0 to 1.5
Molybdenum (Mo), % 0.55 to 0.8
0
Nickel (Ni), % 0 to 0.6
30 to 34
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.75 to 1.5
Vanadium (V), % 0.2 to 0.35
0