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ASTM A369 Grade FP91 vs. SAE-AISI H14 Steel

Both ASTM A369 grade FP91 and SAE-AISI H14 steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP91 and the bottom bar is SAE-AISI H14 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 75
75
Tensile Strength: Ultimate (UTS), MPa 670
710 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1460
1530
Melting Onset (Solidus), °C 1420
1490
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 26
35
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
10

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
15
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 37
39
Embodied Water, L/kg 88
73

Common Calculations

PREN (Pitting Resistance) 13
13
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
24 to 69
Strength to Weight: Bending, points 22
22 to 44
Thermal Diffusivity, mm2/s 6.9
9.3
Thermal Shock Resistance, points 18
24 to 68

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0.35 to 0.45
Chromium (Cr), % 8.0 to 9.5
4.8 to 5.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 87.3 to 90.3
86.5 to 89.9
Manganese (Mn), % 0.3 to 0.6
0.2 to 0.5
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.3
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0.8 to 1.2
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0
4.0 to 5.3
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0