Кованые корпуса клапана

AISI 4130 Forged Bodies for wellhead equipmentsMaterial Type:Low alloy steel AISI 4130 RAW MATERIAL:Forging, bar stock on mechanical tubing Service:ydrogen sulfide (H2S) MATERIAL PROPERTY DESIGNATION:75K MATERIAL COMPOSITION: COMPOSITION CMnPSSiCrMoNiVLIMITS 0.27-0.350.4-0.80.025-max0.025-max0.15-0.450.8-1.30.15-0.350.5- max0.3 max ALLOWABLE MELTING PRACTCE: Material produced to this specification shall be made to fine grain practice using one opf the following melting practice: - Basic oxygen process (BOP). - Electric furnace with vacuum degassing of vacuum processing. - Electric furnace with argon stirred degassing. - Electric furnace followed by Argon Oxygen Decarburization (AOD). - Electric furnace followed by either electro slag remelting (ESR) OR VACUUM ARC REMELTING (VAR). - Vacuum induction melting. - Electric furnace or induction melting following by a ladle refining process. HOT WORKING PRACTICES: Ali wrought materials shall be of pressure vessel quality and shall be formed using a hot working practice which produces a wrought structure. For material produced as a forging, the minimum acceptable total hot work ratio, relative to ingot size, shall be 3:1. Mechanical properties requirements: - Tensile strength, Min. 95,000 PSI - Yield strength, Min. 75,000 PSI - Elongation in 2”, min. 18% - Reduction in Area, min. 35% - Surface Hardness 197-235 HB