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EN 1.4606 Stainless Steel vs. SAE-AISI 4340 Steel

Both EN 1.4606 stainless steel and SAE-AISI 4340 steel are iron alloys. They have 58% 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 4340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23 to 39
12 to 22
Fatigue Strength, MPa 240 to 420
330 to 740
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 410 to 640
430 to 770
Tensile Strength: Ultimate (UTS), MPa 600 to 1020
690 to 1280
Tensile Strength: Yield (Proof), MPa 280 to 630
470 to 1150

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 910
430
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
44
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 26
3.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
1.7
Embodied Energy, MJ/kg 87
22
Embodied Water, L/kg 170
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
79 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 1010
590 to 3490
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 36
24 to 45
Strength to Weight: Bending, points 20 to 28
22 to 33
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 21 to 35
20 to 38

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
0.7 to 0.9
Iron (Fe), % 49.2 to 59
95.1 to 96.3
Manganese (Mn), % 1.0 to 2.0
0.6 to 0.8
Molybdenum (Mo), % 1.0 to 1.5
0.2 to 0.3
Nickel (Ni), % 24 to 27
1.7 to 2.0
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