Chemical Composition *Carbon and silicon targets are specified for each bar size in order to maintain mechanical properties. Titanium is added as an inoculant to produce the Type D graphite structure.
| Carbon | 2.60 - 3.75% |
| Silicon | 2.30 - 3.00% |
| Manganese | 0.20 - 0.40% |
| Sulfur | 0.025% Max |
| Phosphorus | 0.12% Max |
Mechanical Properties Brinell hardness values for nominal as-cast diameters are shown in the table. Hardness properties listed are minimum, maximum across the bar. Hardness values for rectangles and squares are a function of the height and width ratios and will be provided on request.
| 00.750 - 20.000 | 19 – 508 | 248 | 311 |
The tensile strength will be approximately 40,000 psi, as determined from a longitudinal test specimen taken from mid-radius of the as-cast bar. The tensile data is not a minimum, but rather the typical expected tensile strength. Anticipated tensile data for shapes, including squares and rectangles, will be provided on request.
