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Grade TDSiCr Steel vs. EN 1.5538 Steel

Both grade TDSiCr steel and EN 1.5538 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is grade TDSiCr steel and the bottom bar is EN 1.5538 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 590
160 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 48
64 to 69
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 1950
530 to 1810

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 46
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 48
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 70
19 to 64
Strength to Weight: Bending, points 45
19 to 42
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 58
16 to 53

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.5 to 0.6
0.35 to 0.4
Chromium (Cr), % 0.5 to 0.8
0 to 0.3
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 96.6 to 97.8
97.2 to 98.5
Manganese (Mn), % 0.5 to 0.9
1.2 to 1.5
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 1.2 to 1.6
0 to 0.3
Sulfur (S), % 0 to 0.020
0 to 0.025