MakeItFrom.com
Menu (ESC)

EN 1.7216 Steel vs. SAE-AISI 81B45 Steel

Both EN 1.7216 steel and SAE-AISI 81B45 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.7216 steel and the bottom bar is SAE-AISI 81B45 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 280
160 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 23
12 to 24
Fatigue Strength, MPa 290 to 440
250 to 350
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 410 to 560
340 to 400
Tensile Strength: Ultimate (UTS), MPa 650 to 930
540 to 670
Tensile Strength: Yield (Proof), MPa 400 to 690
350 to 560

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
410
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 46
40
Thermal Expansion, µm/m-K 13
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.5
Embodied Energy, MJ/kg 20
20
Embodied Water, L/kg 50
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
77 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1280
320 to 840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 33
19 to 24
Strength to Weight: Bending, points 21 to 27
19 to 22
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 19 to 27
17 to 21

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.27 to 0.34
0.43 to 0.48
Chromium (Cr), % 0.8 to 1.2
0.35 to 0.55
Iron (Fe), % 97.2 to 98.4
97 to 98
Manganese (Mn), % 0.35 to 0.6
0.75 to 1.0
Molybdenum (Mo), % 0.15 to 0.3
0.080 to 0.15
Nickel (Ni), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.35
0.15 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.040

Comparable Variants