// NRDP

Inconel 718

Cladding & Structural

Density: 8.19 g/cm³

Atom density: 0.085469 atoms/b·cm

Nickel–chromium superalloy used in vessel head penetrations, springs, and high-temperature structure.

Where these numbers come from

PNNL-15870 Rev. 2, "Inconel Alloy 718" (id inconel-alloy-718): density and full isotopic composition are taken from the compendium unchanged.

Open the compendium entry for the isotope-by-isotope table and the compendium's own notes.

Material compositions from PNNL-15870 Rev. 2 (April 2021), R.S. Detwiler, R.J. McConn Jr., T.F. Grimes, S.A. Upton, and E.J. Engel, Compendium of Material Composition Data for Radiation Transport Modeling, Pacific Northwest National Laboratory. Full report (DOI 10.2172/1782721)

Composition

Nuclide (ZAID)Weight fractionAtom fractionAtom density (atoms/b·cm)
B-10 (5010)1.0135e-55.8409e-54.9921e-6
B-11 (5011)4.4853e-52.3510e-42.0094e-5
C-12 (6012)7.1957e-43.4604e-32.9575e-4
C-13 (6013)8.4335e-63.7427e-53.1988e-6
Al-27 (13027)5.0000e-31.0694e-29.1398e-4
Si-28 (14028)2.9251e-36.0335e-35.1567e-4
Si-29 (14029)1.5390e-43.0650e-42.6196e-5
Si-30 (14030)1.0507e-42.0229e-41.7289e-5
P-31 (15031)1.3600e-42.5338e-42.1656e-5
S-32 (16032)1.2880e-42.3248e-41.9870e-5
S-33 (16033)1.0487e-61.8355e-61.5688e-7
S-34 (16034)6.1225e-61.0401e-58.8899e-7
S-36 (16036)1.5254e-82.4474e-82.0917e-9
Ti-46 (22046)7.1280e-48.9514e-47.6506e-5
Ti-47 (22047)6.5680e-48.0725e-46.8994e-5
Ti-48 (22048)6.6460e-37.9987e-36.8364e-4
Ti-49 (22049)4.9789e-45.8699e-45.0169e-5
Ti-50 (22050)4.8644e-45.6204e-44.8036e-5
Cr-50 (24050)7.9300e-39.1622e-37.8308e-4
Cr-52 (24052)1.5903e-11.7669e-11.5101e-2
Cr-53 (24053)1.8380e-22.0035e-21.7123e-3
Cr-54 (24054)4.6614e-34.9870e-34.2624e-4
Mn-55 (25055)3.1840e-33.3445e-32.8585e-4
Fe-54 (26054)9.5975e-31.0268e-28.7757e-4
Fe-56 (26056)1.5623e-11.6118e-11.3776e-2
Fe-57 (26057)3.6726e-33.7224e-33.1815e-4
Fe-58 (26058)4.9733e-44.9539e-44.2340e-5
Ni-58 (28058)3.5279e-13.5140e-13.0034e-2
Ni-60 (28060)1.4057e-11.3536e-11.1569e-2
Ni-61 (28061)6.2126e-35.8839e-35.0289e-4
Ni-62 (28062)2.0133e-21.8761e-21.6035e-3
Ni-64 (28064)5.2922e-34.7772e-34.0830e-4
Co-59 (27059)9.0980e-38.9087e-37.6141e-4
Cu-63 (29063)1.8688e-31.7137e-31.4647e-4
Cu-65 (29065)8.6020e-47.6454e-46.5344e-5
Nb-93 (41093)5.1250e-23.1833e-22.7207e-3
Mo-92 (42092)4.2449e-32.6653e-32.2780e-4
Mo-94 (42094)2.7313e-31.6784e-31.4345e-4
Mo-95 (42095)4.7786e-32.9056e-32.4834e-4
Mo-96 (42096)5.0820e-33.0579e-32.6135e-4
Mo-97 (42097)2.9572e-31.7610e-31.5051e-4
Mo-98 (42098)7.5905e-34.4740e-33.8239e-4
Mo-100 (42100)3.1186e-31.8013e-31.5396e-4

This is the material as formulated. The cards below carry weight fractions, written negative, which is what MCNP and Serpent read as a mass basis.

Generated material cards

MCNP
c Inconel 718
c PNNL-15870 Rev. 2, "Inconel Alloy 718" -
c reactormc.net/nrdp/material/inconel-718; rho = 8.19 g/cm3 (use -8.19 on the
c cell card)
m13    5010.80c  -1.0135e-5  $ B10
       5011.80c  -4.4853e-5  $ B11
       6000.80c  -7.2800e-4  $ C
       13027.80c  -0.005000  $ Al27
       14028.80c  -0.002925  $ Si28
       14029.80c  -1.5390e-4  $ Si29
       14030.80c  -1.0507e-4  $ Si30
       15031.80c  -1.3600e-4  $ P31
       16032.80c  -1.2880e-4  $ S32
       16033.80c  -1.0487e-6  $ S33
       16034.80c  -6.1225e-6  $ S34
       16036.80c  -1.5254e-8  $ S36
       22046.80c  -7.1280e-4  $ Ti46
       22047.80c  -6.5680e-4  $ Ti47
       22048.80c  -0.006646  $ Ti48
       22049.80c  -4.9789e-4  $ Ti49
       22050.80c  -4.8644e-4  $ Ti50
       24050.80c  -0.007930  $ Cr50
       24052.80c  -0.159029  $ Cr52
       24053.80c  -0.018380  $ Cr53
       24054.80c  -0.004661  $ Cr54
       25055.80c  -0.003184  $ Mn55
       26054.80c  -0.009597  $ Fe54
       26056.80c  -0.156233  $ Fe56
       26057.80c  -0.003673  $ Fe57
       26058.80c  -4.9733e-4  $ Fe58
       28058.80c  -0.352788  $ Ni58
       28060.80c  -0.140573  $ Ni60
       28061.80c  -0.006213  $ Ni61
       28062.80c  -0.020133  $ Ni62
       28064.80c  -0.005292  $ Ni64
       27059.80c  -0.009098  $ Co59
       29063.80c  -0.001869  $ Cu63
       29065.80c  -8.6020e-4  $ Cu65
       41093.80c  -0.051250  $ Nb93
       42092.80c  -0.004245  $ Mo92
       42094.80c  -0.002731  $ Mo94
       42095.80c  -0.004779  $ Mo95
       42096.80c  -0.005082  $ Mo96
       42097.80c  -0.002957  $ Mo97
       42098.80c  -0.007591  $ Mo98
       42100.80c  -0.003119  $ Mo100

MCNP and Serpent cards use .80c (ENDF/B-VII.1 at 293.6 K) — renumber m1 and change the suffix to match your deck. SCONE compositions are atom densities in atoms/barn-cm with the .03 suffix matching temp 300. See the library reference before changing a suffix: the mapping is not portable between vendors.

Notes

Fifteen elements, including the cobalt (0.91 wt%) and copper (0.27 wt%) the old entry left out. Cobalt matters out of proportion to its mass: Co-59 activates to Co-60, which dominates shutdown dose rates.

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