MakeItFrom.com
Menu (ESC)

SAE-AISI 81B45 Steel vs. EN 1.8831 Steel

Both SAE-AISI 81B45 steel and EN 1.8831 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 1.8831 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 24
19
Fatigue Strength, MPa 250 to 350
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 340 to 400
390
Tensile Strength: Ultimate (UTS), MPa 540 to 670
630
Tensile Strength: Yield (Proof), MPa 350 to 560
480

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
49
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 20
21
Embodied Water, L/kg 49
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
620
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 24
22
Strength to Weight: Bending, points 19 to 22
21
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 17 to 21
18

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.040
Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0 to 0.16
Chromium (Cr), % 0.35 to 0.55
0
Iron (Fe), % 97 to 98
96.6 to 99.98
Manganese (Mn), % 0.75 to 1.0
0 to 1.7
Molybdenum (Mo), % 0.080 to 0.15
0 to 0.2
Nickel (Ni), % 0.2 to 0.4
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.0050
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.1