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ASTM A182 Grade F6b vs. SAE-AISI 4161 Steel

Both ASTM A182 grade F6b and SAE-AISI 4161 steel are iron alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F6b and the bottom bar is SAE-AISI 4161 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
20
Fatigue Strength, MPa 440
290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 530
420
Tensile Strength: Ultimate (UTS), MPa 850
680
Tensile Strength: Yield (Proof), MPa 710
410

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 750
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
43
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 30
20
Embodied Water, L/kg 100
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 31
22

Alloy Composition

Carbon (C), % 0 to 0.15
0.56 to 0.64
Chromium (Cr), % 11.5 to 13.5
0.7 to 0.9
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 81.2 to 87.1
96.7 to 97.6
Manganese (Mn), % 0 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 0.4 to 0.6
0.25 to 0.35
Nickel (Ni), % 1.0 to 2.0
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040