All chrome molybdenum steel sheets are sedated and heat treated in accordance with ASTM A387, which also specifies minimum and maximum levels of the following elements in steel: Chemicals of Carbon, Manganese, Phosphorus, Sulfur, Silicon, Chromium, Molybdenum, Nickel, Vanadium requirements, columbium, boron, nitrogen, aluminum, Titaniwm a zirconium. Rhaid i fyrddau A387 gael profion cynnyrch, cemegol a tynnol (wedi'u dogfennu yn y MTC neu'r dystysgrif prawf deunydd) - rhaid iddynt fodloni gofynion penodol ar gyfer cryfder tynnol, cryfder cynnyrch ac elongation.