{"id":11956,"date":"2023-06-04T00:50:16","date_gmt":"2023-06-04T00:50:16","guid":{"rendered":"https:\/\/hdcmfg.com\/?p=11956"},"modified":"2026-03-04T06:54:14","modified_gmt":"2026-03-04T06:54:14","slug":"fusione-in-acciaio-inossidabile-17-4-ph","status":"publish","type":"post","link":"https:\/\/hdcmfg.com\/it\/blogs\/17-4-ph-stainless-steel-casting\/","title":{"rendered":"Acciaio inossidabile 17-4 Ph: composizione, propriet\u00e0, limitazioni e applicazioni"},"content":{"rendered":"

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Panoramica<\/h2>\n

At HDC Manufacturing, we take immense pride in our extensive capabilities and prowess in the domain of 17-4 Ph stainless steel casting. Drawing upon years of expertise, our adept team excels in delivering tailor-made metal parts manufacturing services utilizing this high-performance material.<\/p>\n

Our proficient technicians harness sophisticated casting methodologies to ensure exactitude and dependability in every 17-4 Ph stainless steel constituent we fabricate. Ranging from intricate designs to convoluted geometries, we possess the acumen to fulfill an array of customer specifications. HDC Manufacturing’s unwavering dedication to impeccable craftsmanship and meticulous attention to minutiae positions us as a dependable ally for your casting requisites.<\/p>\n

Whether the need be prototypes or large-scale production, HDC Manufacturing’s cutting-edge facilities and dedicated professionals stand primed to yield extraordinary outcomes. Embark on an exploration of the potentials inherent in 17-4 Ph stainless steel casting with HDC Manufacturing, and encounter the seamless amalgamation of ingenuity and precision within the realm of metal manufacturing.\"17<\/p>\n

What is 17-4 Ph Stainless Steel?<\/h2>\n

17 – 4 PH martensitic precipitation-hardening stainless steel, also called the Type 630 steel, is an alloy of stainless steel.\u00a0It consists of chromium, nickel, copper and niobium\/columbium at a small amount and tantalum in a very small extent.\u00a0The name implies that it functions via “precipitation strengthening” method (the “PH” in its name stands for “Precipitation Hardening”) with the process of heat treatment.\u00a0This micro alloyed carbon steel is characterized by its excellent corrosion resistance, high strength, good toughness and ease of forming.\u00a0Applications of the material can be found in the aerospace, petrochemical, food processing and marine industries where it is versatile and possesses desirable properties.<\/p>\n

What is the Naming Rule for 17\u20134 Ph Stainless Steel?\"17<\/h2>\n

The naming convention for 17-4 PH stainless steel conform industry standards with the help of which the first digit “17” stands for approximate percentage of chromium, and “4” represents approximate percentage of nickel in the alloy.\u00a0The “PH” indicates the role of “precipitation hardening.” After heat treatment the steel becomes strong.\u00a0Furthermore, “Type 630” is another frequently used designation for the 17-4 PH stainless steel, being one of the aliases for the alloy which is commonly used in specifications and standards.<\/p>\n

L'acciaio inossidabile 17-4 Ph ha altri nomi?<\/h2>\n

17-4 PH stainless steel is a precipitation-hardening martensitic alloy, which is also called Type 630 stainless steel. It offers excellent corrosion resistance and workability by blending of a family of alloys with high strength.\u00a0Its naming convention complies with the industry standard. The number is assigned to imply the approximate composition. For example, the name “17-4” means that the alloy has 17 percent chromium and 4 percent nickel.\u00a0“PH” designator shows its capability for precipitation hardening after thermal treatment.\u00a0Moreover, the product is known as UNS designation S17400; ASTM specification A564- Grade 630 offers standardized reference for international trade and commerce.<\/p>\n

What are the Series of Stainless Steel?\"17<\/h2>\n

Le serie in acciaio inossidabile sono classificate principalmente in base alla composizione chimica e alla microstruttura in diverse categorie principali: Le serie in acciaio inossidabile sono principalmente classificate in base alla composizione chimica e alla microstruttura in diverse categorie principali:<\/p>\n

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  • Acciai inossidabili austenitici:<\/strong> These are the three major types of stainless steel which determine the level of nickel and chromium: (1) high.\u00a0They possess very properties of corrosion resistance, excellent weldability and form-ability. Some of the typical grades are 304 and 316.<\/li>\n
  • Acciai inossidabili ferritici:<\/strong> They contain for maximum effectiveness.\u00a0Austenite steels are more weldable and formable, but they have no advantages of corrosion resistance and magnetism, compared with ferrite steels. A lot of those units are grades 430 and 446.<\/li>\n
  • Acciai inossidabili martensitici:<\/strong> These steels have a higher level of carbon and chromium, which on heat treatment helps them to become stronger and harder.\u00a0They are normally encountered in applications ranging from cutlery to high-wear applications, such as knives. Usually their grades comprise of 410 and 420.<\/li>\n
  • Acciai inossidabili duplex:<\/strong> With a combination ferritic and austentic properties, they are very strong and have good corrosion resistance.\u00a0These vehicles are good under extreme environmental conditions. These degrees are 2205 and 2507.<\/li>\n
  • Acciai inossidabili indurenti per precipitazione:<\/strong> The tendency of which this steel undergoes solidification treatment thus increasing in mechanical properties is known as strengthening. The heat treatment therefore provides both essential mechanical properties and corrosion resistance recommended for applications such as aerospace and other high performance applications. Typical grades are 17-4PH and 15-5PH<\/li>\n<\/ul>\n

    Per ciascuna serie di acciaio inossidabile esistono applicazioni specifiche, pertanto la selezione deve essere effettuata in base alle condizioni ambientali locali e alle prestazioni richieste del prodotto finale.<\/p>\n

    Propriet\u00e0 dell'acciaio inossidabile 17-4 Ph\"17<\/h2>\n

    Composizione chimica dell'acciaio inossidabile 17-4 Ph<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Elemento<\/th>\nContenuto (%)<\/th>\n<\/tr>\n
    Ferro, Fe<\/td>\n73<\/td>\n<\/tr>\n
    Cromo, Cr<\/td>\n15.0 \u2013 17.5<\/td>\n<\/tr>\n
    Nichel, Ni<\/td>\n3.0 \u2013 5.0<\/td>\n<\/tr>\n
    Rame, Cu<\/td>\n3.0 \u2013 5.0<\/td>\n<\/tr>\n
    Manganese, Mn<\/td>\n1.0<\/td>\n<\/tr>\n
    Silicio, Si<\/td>\n1.0<\/td>\n<\/tr>\n
    Tantalio, Ta<\/td>\n0.45<\/td>\n<\/tr>\n
    Niobio, Nb (Columbio, Cb)<\/td>\n0.45<\/td>\n<\/tr>\n
    Nb + Ta<\/td>\n0,15 \u2013 0,45<\/td>\n<\/tr>\n
    Carbonio, C<\/td>\n0.070<\/td>\n<\/tr>\n
    Fosforo, P<\/td>\n0.040<\/td>\n<\/tr>\n
    Zolfo, S<\/td>\n0.030<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Propriet\u00e0 fisiche dell'acciaio inossidabile 17-4 Ph<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Propriet\u00e0<\/strong><\/td>\nmetrico<\/strong><\/td>\nImperiale<\/strong><\/td>\n<\/tr>\n
    Densit\u00e0<\/td>\n7,75 g\/cm3<\/td>\n0,280 libbre\/pollici\u00b3<\/td>\n<\/tr>\n
    Modulo di taglio<\/td>\n77,4 GPa<\/td>\n11200 ksi<\/td>\n<\/tr>\n
    Modulo elastico<\/td>\n190-210 GPa<\/td>\n27557-30458 ksi<\/td>\n<\/tr>\n
    rapporto di Poisson<\/td>\n0.27-0.30<\/td>\n0.27-0.30<\/td>\n<\/tr>\n
    Durezza, Brinell<\/td>\n352<\/td>\n352<\/td>\n<\/tr>\n
    Durezza, Knoop (stimata da Rockwell C)<\/td>\n363<\/td>\n363<\/td>\n<\/tr>\n
    Durezza, Rockwell C<\/td>\n36<\/td>\n36<\/td>\n<\/tr>\n
    Durezza, Vickers (stimata da Rockwell C)<\/td>\n349<\/td>\n349<\/td>\n<\/tr>\n
    Coefficiente di dilatazione termica (@ 21-93\u00b0C\/69,8-199\u00b0F)<\/td>\n10,8 \u00b5m\/m\u00b0C<\/td>\n6,00 \u00b5pollici\/pollici\u00b0F<\/td>\n<\/tr>\n
    Conduttivit\u00e0 termica (per la condizione H 900 a 149\u00baC. 22,6 W\/mK per H 900 a 482\u00baC)<\/td>\n17,9 W\/mK<\/td>\n124 BTU pollici\/ora.ft\u00b2.\u00b0F<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    L'influenza della composizione elementare sulle propriet\u00e0 dell'acciaio inossidabile 17\u20134\"17<\/h2>\n

    The properties of 17-4 stainless steel are naturally part of its elements composition.\u00a0Chromium, the main alloying element, improves the corrosion resistance properties for different media.\u00a0Nickel increases the toughness, ductility, and high-temperature strength and, additionally, it does improve the corrosion resistance.\u00a0Copper increases corrosion resistance, in particular in the marine environment, and it assists in precipitation hardening.\u00a0Porous additions of niobium and tantalum lumenize the grains and its transformation to precipitation harden.\u00a0Carbon and manganese contents are both kept low to gain corrosion resistance and surface hardening.\u00a0Overall, the overall elemental composition control bestows the mechanical properties needed for major applications e.g. corrosion resistance, strength, toughness and weldability. Thus the 17-4 stainless steel is appropriately used for different purposes by many industries.<\/p>\n

    Limitazioni dell'acciaio inossidabile 17\u20134<\/h2>\n

    Although 17-4 martensitic stainless steel has a number of merits, it also has problems.\u00a0Firstly, its price is often high, because of intricate make-up and, moreover, additional processing that include precpitation hardening.\u00a0Second to the contrary, it poses a challenge because of the crack susceptibility, hence the need for preheating and post weld heat treatment.\u00a0Moreover, its machinability is degraded compared to other stainless grades, thereby the wear and machining cost increases.\u00a0It is excellent in corrosion resistance, yet not all premium alloys perform well in very aggressive environment.\u00a0Firstly, exact heat treatment control is vital for the achievement of expected mechanical properties, thus processed products become very complex products to produce.\u00a0This emphasizes the importance of great care that should be taken into account when picking the 17-4 stainless steel for specific applications.<\/p>\n

    \u00c8 possibile fondere l'acciaio inossidabile 17\u20134?<\/h2>\n

    L'acciaio inossidabile 17-4 PH pu\u00f2 essere fuso utilizzando metodi di fusione adeguati. 17-4 PH \u00e8 un acciaio inossidabile indurente per precipitazione noto per la sua eccellente resistenza alla corrosione, resistenza e tenacit\u00e0. \u00c8 comunemente utilizzato in applicazioni che richiedono elevata robustezza e resistenza all'usura, come l'industria aerospaziale, petrolifera e del gas e medica.<\/p>\n