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SAE-AISI T4 Steel vs. EN 1.4458 Stainless Steel

Both SAE-AISI T4 steel and EN 1.4458 stainless steel are iron alloys. They have 52% 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 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
510

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1810
1420
Melting Onset (Solidus), °C 1750
1370
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 55
30
Density, g/cm3 9.4
8.0
Embodied Carbon, kg CO2/kg material 8.5
5.4
Embodied Energy, MJ/kg 130
75
Embodied Water, L/kg 120
200

Common Calculations

PREN (Pitting Resistance) 37
30
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 24 to 64
17
Strength to Weight: Bending, points 20 to 39
18
Thermal Diffusivity, mm2/s 5.4
4.2
Thermal Shock Resistance, points 24 to 64
12

Alloy Composition

Carbon (C), % 0.7 to 0.8
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
19 to 22
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 2.0
Iron (Fe), % 66.3 to 72.3
40.2 to 53
Manganese (Mn), % 0.1 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
2.0 to 2.5
Nickel (Ni), % 0 to 0.3
26 to 30
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 0.8 to 1.2
0