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EN 1.3539 Steel vs. SAE-AISI 4340M Steel

Both EN 1.3539 steel and SAE-AISI 4340M steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.3539 steel and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
710
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 670
2340

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 450
430
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
38
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2
3.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.9
Embodied Energy, MJ/kg 22
26
Embodied Water, L/kg 57
55

Common Calculations

PREN (Pitting Resistance) 3.8
2.2
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
84
Strength to Weight: Bending, points 22
51
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 20
70

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0.93 to 1.1
0.38 to 0.43
Chromium (Cr), % 1.8 to 2.1
0.7 to 1.0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.2 to 96.5
93.3 to 94.8
Manganese (Mn), % 0.8 to 1.1
0.65 to 0.9
Molybdenum (Mo), % 0.5 to 0.6
0.35 to 0.45
Nickel (Ni), % 0
1.7 to 2.0
Oxygen (O), % 0 to 0.0015
0
Phosphorus (P), % 0 to 0.025
0 to 0.012
Silicon (Si), % 0.4 to 0.6
1.5 to 1.8
Sulfur (S), % 0 to 0.030
0 to 0.012
Vanadium (V), % 0
0.050 to 0.1