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ASTM A182 Grade F3VCb vs. SAE-AISI 4340M Steel

Both ASTM A182 grade F3VCb and SAE-AISI 4340M steel are iron alloys. Both are furnished in the annealed condition. They have a very high 96% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F3VCb and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
710
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
6.0
Fatigue Strength, MPa 320
690
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
72
Shear Strength, MPa 420
1360
Tensile Strength: Ultimate (UTS), MPa 670
2340
Tensile Strength: Yield (Proof), MPa 460
1240

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 470
430
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
38
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
3.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.4
1.9
Embodied Energy, MJ/kg 33
26
Embodied Water, L/kg 64
55

Common Calculations

PREN (Pitting Resistance) 6.3
2.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 570
4120
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
84
Strength to Weight: Bending, points 22
51
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 19
70

Alloy Composition

Calcium (Ca), % 0.00050 to 0.015
0
Carbon (C), % 0.1 to 0.15
0.38 to 0.43
Chromium (Cr), % 2.7 to 3.3
0.7 to 1.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.8 to 95.8
93.3 to 94.8
Manganese (Mn), % 0.3 to 0.6
0.65 to 0.9
Molybdenum (Mo), % 0.9 to 1.1
0.35 to 0.45
Nickel (Ni), % 0 to 0.25
1.7 to 2.0
Niobium (Nb), % 0.015 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.012
Silicon (Si), % 0 to 0.1
1.5 to 1.8
Sulfur (S), % 0 to 0.010
0 to 0.012
Titanium (Ti), % 0 to 0.015
0
Vanadium (V), % 0.2 to 0.3
0.050 to 0.1