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ASTM A369 Grade FP91 vs. AWS E316L

Both ASTM A369 grade FP91 and AWS E316L are iron alloys. They have 75% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP91 and the bottom bar is AWS E316L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 670
550

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
4.0
Embodied Energy, MJ/kg 37
55
Embodied Water, L/kg 88
160

Common Calculations

PREN (Pitting Resistance) 13
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 6.9
4.0
Thermal Shock Resistance, points 18
14

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0 to 0.040
Chromium (Cr), % 8.0 to 9.5
17 to 20
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 87.3 to 90.3
58.6 to 69.5
Manganese (Mn), % 0.3 to 0.6
0.5 to 2.5
Molybdenum (Mo), % 0.85 to 1.1
2.0 to 3.0
Nickel (Ni), % 0 to 0.4
11 to 14
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.2 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0