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EN 1.7709 Steel vs. EN 1.3555 Steel

Both EN 1.7709 steel and EN 1.3555 steel are iron alloys. They have 90% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (2, 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 1.3555 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 650 to 780
770

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 440
540
Melting Completion (Liquidus), °C 1470
1500
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
11

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.3
5.6
Embodied Energy, MJ/kg 32
81
Embodied Water, L/kg 56
90

Common Calculations

PREN (Pitting Resistance) 3.6
18
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 27
27
Strength to Weight: Bending, points 21 to 24
23
Thermal Shock Resistance, points 22 to 26
22

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0.1 to 0.15
Chromium (Cr), % 1.2 to 1.5
3.9 to 4.3
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 95.2 to 97.5
85.4 to 87.7
Manganese (Mn), % 0.4 to 0.8
0.15 to 0.35
Molybdenum (Mo), % 0.55 to 0.8
4.0 to 4.5
Nickel (Ni), % 0 to 0.6
3.2 to 3.6
Phosphorus (P), % 0 to 0.025
0 to 0.015
Silicon (Si), % 0 to 0.4
0.1 to 0.25
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0.2 to 0.35
1.0 to 1.3