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ASTM A369 Grade FP91 vs. SAE-AISI T1 Steel

Both ASTM A369 grade FP91 and SAE-AISI T1 steel are iron alloys. They have 80% of their average alloy composition in common. There are 22 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 FP91 and the bottom bar is SAE-AISI T1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 670
770 to 2130

Thermal Properties

Latent Heat of Fusion, J/g 270
240
Melting Completion (Liquidus), °C 1460
1810
Melting Onset (Solidus), °C 1420
1750
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 26
20
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
45
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 2.6
8.2
Embodied Energy, MJ/kg 37
130
Embodied Water, L/kg 88
90

Common Calculations

PREN (Pitting Resistance) 13
34
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 24
23 to 64
Strength to Weight: Bending, points 22
20 to 40
Thermal Diffusivity, mm2/s 6.9
5.2
Thermal Shock Resistance, points 18
23 to 64

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0.65 to 0.8
Chromium (Cr), % 8.0 to 9.5
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 87.3 to 90.3
73.2 to 77.2
Manganese (Mn), % 0.3 to 0.6
0.1 to 0.4
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
0.2 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0
17.3 to 18.8
Vanadium (V), % 0.18 to 0.25
0.9 to 1.3
Zirconium (Zr), % 0 to 0.010
0