Chemical Requirements for Grades O,A,B,C,D, and DH Nuts
Jun 15,2018

Grade of Nut

Composition,%

Analysis

Carbon

Manga-nese,
min

Posph-
orus,
max

Sulfur,
max

O,A,B,C

heat product

0.55 max
0.58 max


0.12
0.13B

0.15A

DC

heat product

0.55 max
0.58 max

0.30
0.27

0.04
0.48

0.05
0.058

DHC

heat product

0.20-0.55
0.18-0.58

0.60
0.57

0.04
0.48

0.05
0.058


A For Grades O,A, and B a sulfur content of 0.23% max is acceptable with purchaser's approval.
B Acid-bessemer steel only.
C For Grades D and DH a sulfur content of 0.05-0.15% is acceptable, provided the manganese is 1.35% min.

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