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ASTM A182 Grade F12 Class 1 vs. ASTM A369 Grade FP5

Both ASTM A182 grade F12 class 1 and ASTM A369 grade FP5 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 (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F12 class 1 and the bottom bar is ASTM A369 grade FP5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
20
Fatigue Strength, MPa 180
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 300
300
Tensile Strength: Ultimate (UTS), MPa 470
470
Tensile Strength: Yield (Proof), MPa 250
240

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 430
510
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
4.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 21
23
Embodied Water, L/kg 52
69

Common Calculations

PREN (Pitting Resistance) 2.8
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
80
Resilience: Unit (Modulus of Resilience), kJ/m3 160
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 14
13

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 0.8 to 1.3
4.0 to 6.0
Iron (Fe), % 96.8 to 98.4
92.1 to 95.3
Manganese (Mn), % 0.3 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.44 to 0.65
0.45 to 0.65
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.045
0 to 0.025