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EN 1.7709 Steel vs. EN 1.7366 Steel

Both EN 1.7709 steel and EN 1.7366 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.7709 steel and the bottom bar is EN 1.7366 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
140 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 650 to 780
460 to 710

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 440
510
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 33
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
4.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.7
Embodied Energy, MJ/kg 32
23
Embodied Water, L/kg 56
69

Common Calculations

PREN (Pitting Resistance) 3.6
6.8
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 27
16 to 25
Strength to Weight: Bending, points 21 to 24
17 to 23
Thermal Diffusivity, mm2/s 8.9
11
Thermal Shock Resistance, points 22 to 26
13 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0 to 0.18
Chromium (Cr), % 1.2 to 1.5
4.0 to 6.0
Iron (Fe), % 95.2 to 97.5
91.9 to 95.3
Manganese (Mn), % 0.4 to 0.8
0.3 to 0.8
Molybdenum (Mo), % 0.55 to 0.8
0.45 to 0.65
Nickel (Ni), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.2 to 0.35
0