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Grade TDC Steel vs. EN 1.5515 Steel

Both grade TDC steel and EN 1.5515 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is grade TDC steel and the bottom bar is EN 1.5515 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
150 to 170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 50
64 to 69
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 1700
490 to 1760

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
48
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 60
17 to 63
Strength to Weight: Bending, points 40
18 to 41
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 50
14 to 52

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.6 to 0.75
0.35 to 0.4
Chromium (Cr), % 0 to 0.3
0 to 0.3
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 98 to 99.4
97.8 to 98.9
Manganese (Mn), % 0.5 to 1.2
0.6 to 0.9
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0.1 to 0.35
0.15 to 0.3
Sulfur (S), % 0 to 0.020
0 to 0.025