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EN 1.3555 Steel vs. SAE-AISI S7 Steel

Both EN 1.3555 steel and SAE-AISI S7 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 22 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 1.3555 steel and the bottom bar is SAE-AISI S7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 770
670 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 11
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
5.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.3
Embodied Energy, MJ/kg 81
31
Embodied Water, L/kg 90
65

Common Calculations

PREN (Pitting Resistance) 18
8.4
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
24 to 72
Strength to Weight: Bending, points 23
22 to 46
Thermal Shock Resistance, points 22
22 to 66

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.45 to 0.55
Chromium (Cr), % 3.9 to 4.3
3.0 to 3.5
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 85.4 to 87.7
91.6 to 94.9
Manganese (Mn), % 0.15 to 0.35
0.2 to 0.9
Molybdenum (Mo), % 4.0 to 4.5
1.3 to 1.8
Nickel (Ni), % 3.2 to 3.6
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0.1 to 0.25
0.2 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0 to 0.3