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SAE-AISI D5 Steel vs. EN 1.4421 Stainless Steel

Both SAE-AISI D5 steel and EN 1.4421 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D5 steel and the bottom bar is EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.4 to 14
11 to 17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
880 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
16
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 4.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.5
2.6
Embodied Energy, MJ/kg 51
36
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 15
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 73
31 to 39
Strength to Weight: Bending, points 24 to 46
26 to 30
Thermal Diffusivity, mm2/s 7.4
4.4
Thermal Shock Resistance, points 26 to 67
31 to 39

Alloy Composition

Carbon (C), % 1.4 to 1.6
0 to 0.060
Chromium (Cr), % 11 to 13
15.5 to 17.5
Cobalt (Co), % 2.5 to 3.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 77.9 to 84.4
74.4 to 80.5
Manganese (Mn), % 0 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.7 to 1.2
0 to 0.7
Nickel (Ni), % 0 to 0.3
4.0 to 5.5
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.6
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020
Vanadium (V), % 0 to 1.0
0

Comparable Variants