{"data":{"id":"us/46-cfr-56.60-5","jurisdiction":"us","citation":"46 CFR 56.60-5","heading":"-5 Steel (High temperature applications).","body":"(a) (Reproduces 124.2.A.) Upon prolonged exposure to temperatures above 800 °F (427 °C), the carbide phase of plain carbon steel, plain nickel-alloy steel, carbon-manganese-alloy steel, manganese-vanadium-alloy steel, and carbon-silicon steel may convert to graphite.\n(b) (Reproduces 124.2.B.) Upon prolonged exposure to temperatures above 875 °F (468 °C), the carbide phase of alloy steels, such as carbon-molybdenum, manganese-molybdenum-vanadium, manganese-chromium-vanadium, and chromium-vanadium, may convert to graphite.\n(c) The design temperature of a piping system employing one or more of the materials listed in paragraphs (a) and (b) of this section must not exceed the lowest graphitization temperature specified for materials used.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER F—MARINE ENGINEERING","PART 56—PIPING SYSTEMS AND APPURTENANCES","Subpart 56.60—Materials"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"5879efd9b348ef0b69eb75f460f7030918573976c8dab7d3bde32ec52369fba2","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-56.60-3","next":"us/46-cfr-56.60-10"},"notice":"GroundRules: Original legal text. Not legal advice."}