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EN 1.7779 Steel vs. EN 1.3553 Steel

Both EN 1.7779 steel and EN 1.3553 steel are iron alloys. They have 87% 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 1.7779 steel and the bottom bar is EN 1.3553 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 810
720

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 470
540
Melting Completion (Liquidus), °C 1460
1620
Melting Onset (Solidus), °C 1420
1570
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 39
24
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
10
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
11

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
24
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.8
8.5
Embodied Energy, MJ/kg 41
130
Embodied Water, L/kg 64
96

Common Calculations

PREN (Pitting Resistance) 5.0
31
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 11
6.4
Thermal Shock Resistance, points 23
21

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0.78 to 0.86
Chromium (Cr), % 3.0 to 3.3
3.9 to 4.3
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 93.8 to 95.4
80.7 to 83.7
Manganese (Mn), % 0.3 to 0.5
0 to 0.4
Molybdenum (Mo), % 0.5 to 0.6
4.7 to 5.2
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.015
Tungsten (W), % 0
6.0 to 6.7
Vanadium (V), % 0.45 to 0.55
1.7 to 2.0