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AWS E383 vs. ASTM A369 Grade FP91

Both AWS E383 and ASTM A369 grade FP91 are iron alloys. They have 45% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E383 and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
19
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 580
670

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
26
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
7.0
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.4
2.6
Embodied Energy, MJ/kg 89
37
Embodied Water, L/kg 240
88

Common Calculations

PREN (Pitting Resistance) 40
13
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 3.1
6.9
Thermal Shock Resistance, points 15
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0 to 0.030
0.080 to 0.12
Chromium (Cr), % 26.5 to 29
8.0 to 9.5
Copper (Cu), % 0.6 to 1.5
0
Iron (Fe), % 28.8 to 39.2
87.3 to 90.3
Manganese (Mn), % 0.5 to 2.5
0.3 to 0.6
Molybdenum (Mo), % 3.2 to 4.2
0.85 to 1.1
Nickel (Ni), % 30 to 33
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.9
0.2 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.025
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010