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SAE-AISI 81B45 Steel vs. EN 1.5662 Steel

Both SAE-AISI 81B45 steel and EN 1.5662 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 81B45 steel and the bottom bar is EN 1.5662 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 24
20
Fatigue Strength, MPa 250 to 350
380 to 450
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 340 to 400
460 to 470
Tensile Strength: Ultimate (UTS), MPa 540 to 670
740 to 750
Tensile Strength: Yield (Proof), MPa 350 to 560
550 to 660

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
430
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
7.5
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.5
2.3
Embodied Energy, MJ/kg 20
31
Embodied Water, L/kg 49
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
810 to 1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 24
26
Strength to Weight: Bending, points 19 to 22
23
Thermal Shock Resistance, points 17 to 21
22

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0 to 0.1
Chromium (Cr), % 0.35 to 0.55
0
Iron (Fe), % 97 to 98
88.6 to 91.2
Manganese (Mn), % 0.75 to 1.0
0.3 to 0.8
Molybdenum (Mo), % 0.080 to 0.15
0 to 0.1
Nickel (Ni), % 0.2 to 0.4
8.5 to 10
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.0050
Vanadium (V), % 0
0 to 0.050