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SAE-AISI 50B60 Steel vs. ASTM A369 Grade FP2

Both SAE-AISI 50B60 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 50B60 steel and the bottom bar is ASTM A369 grade FP2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 20
20
Fatigue Strength, MPa 240 to 330
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 380
270
Tensile Strength: Ultimate (UTS), MPa 610 to 630
430
Tensile Strength: Yield (Proof), MPa 350 to 530
240

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
49
Thermal Expansion, µm/m-K 12
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 48
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 100
75
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 750
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 23
15
Strength to Weight: Bending, points 20 to 21
16
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 20
13

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.56 to 0.64
0.1 to 0.2
Chromium (Cr), % 0.4 to 0.6
0.5 to 0.81
Iron (Fe), % 97.3 to 98.1
97.4 to 98.6
Manganese (Mn), % 0.75 to 1.0
0.3 to 0.61
Molybdenum (Mo), % 0
0.44 to 0.65
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