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ASTM A369 Grade FP12 vs. SAE-AISI D2 Steel

Both ASTM A369 grade FP12 and SAE-AISI D2 steel are iron alloys. They have 86% of their average alloy composition in common. There are 30 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 A369 grade FP12 and the bottom bar is SAE-AISI D2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
5.0 to 16
Fatigue Strength, MPa 170
310 to 860
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 300
460 to 1160
Tensile Strength: Ultimate (UTS), MPa 470
760 to 2000
Tensile Strength: Yield (Proof), MPa 250
470 to 1510

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
31
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
4.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
8.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.6
3.4
Embodied Energy, MJ/kg 21
50
Embodied Water, L/kg 52
100

Common Calculations

PREN (Pitting Resistance) 2.8
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
92 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 160
570 to 5940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
27 to 72
Strength to Weight: Bending, points 17
24 to 46
Thermal Diffusivity, mm2/s 12
8.3
Thermal Shock Resistance, points 14
25 to 67

Alloy Composition

Carbon (C), % 0.050 to 0.15
1.4 to 1.6
Chromium (Cr), % 0.8 to 1.3
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.8 to 98.4
81.3 to 86.9
Manganese (Mn), % 0.3 to 0.61
0 to 0.6
Molybdenum (Mo), % 0.44 to 0.65
0.7 to 1.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.025
0 to 0.030
Vanadium (V), % 0
0 to 1.1