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EN 1.4749 Stainless Steel vs. SAE-AISI T4 Steel

Both EN 1.4749 stainless steel and SAE-AISI T4 steel are iron alloys. They have 74% 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 EN 1.4749 stainless steel and the bottom bar is SAE-AISI T4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 600
800 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1420
1810
Melting Onset (Solidus), °C 1380
1750
Specific Heat Capacity, J/kg-K 490
410
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
55
Density, g/cm3 7.6
9.4
Embodied Carbon, kg CO2/kg material 2.5
8.5
Embodied Energy, MJ/kg 36
130
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 31
37
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 26
21
Strength to Weight: Axial, points 22
24 to 64
Strength to Weight: Bending, points 21
20 to 39
Thermal Diffusivity, mm2/s 4.6
5.4
Thermal Shock Resistance, points 22
24 to 64

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.7 to 0.8
Chromium (Cr), % 26 to 29
3.8 to 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 68.5 to 73.7
66.3 to 72.3
Manganese (Mn), % 0 to 1.0
0.1 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
0.8 to 1.2