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ASTM A369 Grade FP91 vs. AWS E2595

Both ASTM A369 grade FP91 and AWS E2595 are iron alloys. They have 69% 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 E2595.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
17
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 670
850

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
16
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
4.4
Embodied Energy, MJ/kg 37
61
Embodied Water, L/kg 88
190

Common Calculations

PREN (Pitting Resistance) 13
42
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
30
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 6.9
4.2
Thermal Shock Resistance, points 18
21

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
24 to 27
Copper (Cu), % 0
0.4 to 1.5
Iron (Fe), % 87.3 to 90.3
51.4 to 64.5
Manganese (Mn), % 0.3 to 0.6
0 to 2.5
Molybdenum (Mo), % 0.85 to 1.1
2.5 to 4.5
Nickel (Ni), % 0 to 0.4
8.0 to 10.5
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0.2 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0 to 1.2
Sulfur (S), % 0 to 0.025
0 to 0.025
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0
0.4 to 1.0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0