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EN 1.4740 Stainless Steel vs. SAE-AISI D2 Steel

Both EN 1.4740 stainless steel and SAE-AISI D2 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 21 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 EN 1.4740 stainless steel and the bottom bar is SAE-AISI D2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 22
5.0 to 16
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 18
31
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
4.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
8.0
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.3
3.4
Embodied Energy, MJ/kg 32
50
Embodied Water, L/kg 120
100

Common Calculations

PREN (Pitting Resistance) 18
15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Thermal Diffusivity, mm2/s 4.8
8.3

Alloy Composition

Carbon (C), % 0.3 to 0.5
1.4 to 1.6
Chromium (Cr), % 16 to 19
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 75.4 to 82.7
81.3 to 86.9
Manganese (Mn), % 0 to 1.0
0 to 0.6
Molybdenum (Mo), % 0 to 0.5
0.7 to 1.2
Nickel (Ni), % 0 to 1.0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 1.0 to 2.5
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 1.1