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SAE-AISI 8617 Steel vs. ASTM A369 Grade FP2

Both SAE-AISI 8617 steel and ASTM A369 grade FP2 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 8617 steel and the bottom bar is ASTM A369 grade FP2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
20
Fatigue Strength, MPa 230
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300
270
Tensile Strength: Ultimate (UTS), MPa 470
430
Tensile Strength: Yield (Proof), MPa 320
240

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 43
49
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 20
20
Embodied Water, L/kg 50
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
75
Resilience: Unit (Modulus of Resilience), kJ/m3 270
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 15
13

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.1 to 0.2
Chromium (Cr), % 0.4 to 0.6
0.5 to 0.81
Iron (Fe), % 96.9 to 98.1
97.4 to 98.6
Manganese (Mn), % 0.7 to 0.9
0.3 to 0.61
Molybdenum (Mo), % 0.15 to 0.25
0.44 to 0.65
Nickel (Ni), % 0.4 to 0.7
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0.1 to 0.3
Sulfur (S), % 0 to 0.040
0 to 0.025