MakeItFrom.com
Menu (ESC)

SAE-AISI 8630 Steel vs. ASTM A369 Grade FPB

Both SAE-AISI 8630 steel and ASTM A369 grade FPB are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 8630 steel and the bottom bar is ASTM A369 grade FPB.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 24
19
Fatigue Strength, MPa 260 to 350
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 340 to 410
290
Tensile Strength: Ultimate (UTS), MPa 540 to 680
470
Tensile Strength: Yield (Proof), MPa 360 to 560
270

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 39
52
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 50
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 110
78
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 840
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 24
17
Strength to Weight: Bending, points 19 to 22
17
Thermal Diffusivity, mm2/s 10
14
Thermal Shock Resistance, points 18 to 23
15

Alloy Composition

Carbon (C), % 0.28 to 0.33
0 to 0.3
Chromium (Cr), % 0.4 to 0.6
0
Iron (Fe), % 96.8 to 97.9
98.1 to 99.61
Manganese (Mn), % 0.7 to 0.9
0.29 to 1.1
Molybdenum (Mo), % 0.15 to 0.25
0
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
0.1 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.035