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SAE-AISI T4 Steel vs. EN 1.7729 Steel

Both SAE-AISI T4 steel and EN 1.7729 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 (12, 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 1.7729 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
73
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
910

Thermal Properties

Latent Heat of Fusion, J/g 250
250
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
40
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 55
3.8
Density, g/cm3 9.4
7.8
Embodied Carbon, kg CO2/kg material 8.5
3.3
Embodied Energy, MJ/kg 130
49
Embodied Water, L/kg 120
59

Common Calculations

PREN (Pitting Resistance) 37
4.4
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 24 to 64
32
Strength to Weight: Bending, points 20 to 39
27
Thermal Diffusivity, mm2/s 5.4
11
Thermal Shock Resistance, points 24 to 64
27

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0.7 to 0.8
0.17 to 0.23
Chromium (Cr), % 3.8 to 4.5
0.9 to 1.2
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 66.3 to 72.3
94.8 to 97
Manganese (Mn), % 0.1 to 0.4
0.35 to 0.75
Molybdenum (Mo), % 0.4 to 1.0
0.9 to 1.1
Nickel (Ni), % 0 to 0.3
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0
0.070 to 0.15
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 0.8 to 1.2
0.6 to 0.8