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ASTM A369 Grade FP92 vs. SAE-AISI P21 Steel

Both ASTM A369 grade FP92 and SAE-AISI P21 steel are iron alloys. They have 89% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP92 and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 710
1130

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1490
1450
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
41
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 10
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
6.5
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.8
2.3
Embodied Energy, MJ/kg 40
32
Embodied Water, L/kg 89
62

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
40
Strength to Weight: Bending, points 22
31
Thermal Diffusivity, mm2/s 6.9
11
Thermal Shock Resistance, points 19
37

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.070 to 0.13
0.18 to 0.22
Chromium (Cr), % 8.5 to 9.5
0 to 0.5
Cobalt (Co), % 0
1.1 to 1.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 85.8 to 89.1
92.1 to 94.2
Manganese (Mn), % 0.3 to 0.6
0.35 to 0.72
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 0 to 0.4
3.9 to 4.3
Niobium (Nb), % 0.040 to 0.090
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0.15 to 0.25
Zirconium (Zr), % 0 to 0.010
0