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SAE-AISI T4 Steel vs. EN 1.7378 Steel

Both SAE-AISI T4 steel and EN 1.7378 steel are iron alloys. They have 73% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T4 steel and the bottom bar is EN 1.7378 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
74
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
700

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1810
1470
Melting Onset (Solidus), °C 1750
1430
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 21
39
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 55
4.0
Density, g/cm3 9.4
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.3
Embodied Energy, MJ/kg 130
33
Embodied Water, L/kg 120
61

Common Calculations

PREN (Pitting Resistance) 37
5.8
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 24 to 64
25
Strength to Weight: Bending, points 20 to 39
22
Thermal Diffusivity, mm2/s 5.4
10
Thermal Shock Resistance, points 24 to 64
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0015 to 0.0070
Carbon (C), % 0.7 to 0.8
0.050 to 0.1
Chromium (Cr), % 3.8 to 4.5
2.2 to 2.6
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 66.3 to 72.3
94.6 to 96.1
Manganese (Mn), % 0.1 to 0.4
0.3 to 0.7
Molybdenum (Mo), % 0.4 to 1.0
0.9 to 1.1
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.4
0.15 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.050 to 0.1
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 0.8 to 1.2
0.2 to 0.3