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SAE-AISI 8642 Steel vs. EN 1.7216 Steel

Both SAE-AISI 8642 steel and EN 1.7216 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 8642 steel and the bottom bar is EN 1.7216 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
12 to 23
Fatigue Strength, MPa 270
290 to 440
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 370
410 to 560
Tensile Strength: Ultimate (UTS), MPa 580
650 to 930
Tensile Strength: Yield (Proof), MPa 380
400 to 690

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
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 39
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
2.4
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
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 390
430 to 1280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
23 to 33
Strength to Weight: Bending, points 20
21 to 27
Thermal Diffusivity, mm2/s 10
12
Thermal Shock Resistance, points 17
19 to 27

Alloy Composition

Carbon (C), % 0.4 to 0.45
0.27 to 0.34
Chromium (Cr), % 0.4 to 0.6
0.8 to 1.2
Iron (Fe), % 96.6 to 97.8
97.2 to 98.4
Manganese (Mn), % 0.75 to 1.0
0.35 to 0.6
Molybdenum (Mo), % 0.15 to 0.25
0.15 to 0.3
Nickel (Ni), % 0.4 to 0.7
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.035