MakeItFrom.com
Menu (ESC)

ASTM A182 Grade F12 Class 2 vs. SAE-AISI 4720 Steel

Both ASTM A182 grade F12 class 2 and SAE-AISI 4720 steel are iron alloys. Both are furnished in the annealed condition. They have a very high 99% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F12 class 2 and the bottom bar is SAE-AISI 4720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
25
Fatigue Strength, MPa 220
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 340
310
Tensile Strength: Ultimate (UTS), MPa 540
490
Tensile Strength: Yield (Proof), MPa 310
350

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
410
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 43
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
2.9
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 21
21
Embodied Water, L/kg 52
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 260
330
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 12
10
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0.1 to 0.2
0.17 to 0.22
Chromium (Cr), % 0.8 to 1.3
0.35 to 0.55
Iron (Fe), % 96.4 to 98.3
96.7 to 97.8
Manganese (Mn), % 0.3 to 0.8
0.5 to 0.7
Molybdenum (Mo), % 0.44 to 0.65
0.15 to 0.25
Nickel (Ni), % 0
0.9 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.1 to 0.6
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040