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EN 1.4606 Stainless Steel vs. SAE-AISI 8740 Steel

Both EN 1.4606 stainless steel and SAE-AISI 8740 steel are iron alloys. They have 57% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4606 stainless steel and the bottom bar is SAE-AISI 8740 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23 to 39
11 to 23
Fatigue Strength, MPa 240 to 420
270 to 350
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 410 to 640
370 to 400
Tensile Strength: Ultimate (UTS), MPa 600 to 1020
580 to 670
Tensile Strength: Yield (Proof), MPa 280 to 630
380 to 570

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 910
410
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 26
2.6
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
1.5
Embodied Energy, MJ/kg 87
20
Embodied Water, L/kg 170
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 1010
390 to 850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 36
20 to 24
Strength to Weight: Bending, points 20 to 28
20 to 22
Thermal Diffusivity, mm2/s 3.7
10
Thermal Shock Resistance, points 21 to 35
17 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0 to 0.080
0.38 to 0.43
Chromium (Cr), % 13 to 16
0.4 to 0.6
Iron (Fe), % 49.2 to 59
96.5 to 97.7
Manganese (Mn), % 1.0 to 2.0
0.75 to 1.0
Molybdenum (Mo), % 1.0 to 1.5
0.2 to 0.3
Nickel (Ni), % 24 to 27
0.4 to 0.7
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040
Titanium (Ti), % 1.9 to 2.3
0
Vanadium (V), % 0.1 to 0.5
0