{"id":4501,"date":"2023-04-17T07:05:18","date_gmt":"2023-04-17T07:05:18","guid":{"rendered":"https:\/\/qilusteelgroup.com\/?post_type=product&p=4501"},"modified":"2024-02-28T10:01:17","modified_gmt":"2024-02-28T10:01:17","slug":"817m40","status":"publish","type":"product","link":"https:\/\/qilusteelgroup.com\/tr\/urun\/817m40\/","title":{"rendered":"817M40 Alloy Steel"},"content":{"rendered":"

817M40 Alloy Steel<\/h4>\n

817M40 is a high tensile alloy steel, usually supplied in the heat treated T condition, although several heat treatments are available with specification limitations on size. The steel exhibits good shock and wear resisting properties. Main uses include gears, bolts and studs, shafts spindles and forgings. The material differs from 709M40 by the significant Nickel content. Nickel helps improve resistance to corrosion and toughness. The material is best machined with carbide tooling.<\/p>\n

Chemical Composition<\/h4>\n\n\n\n\n\n
S\u0131n\u0131f<\/td>\nC<\/td>\nSi<\/td>\nMn<\/td>\nP<\/td>\nS<\/td>\nCr<\/td>\nNi<\/td>\nMo<\/td>\n<\/tr>\n
EN24<\/td>\n0.35-0.45<\/td>\n0.10-0.35<\/td>\n0.45-0.7<\/td>\n\u22640.05<\/td>\n\u22640.05<\/td>\n0.9-1.4<\/td>\n1.3-1.8<\/td>\n0.2-0.35<\/td>\n<\/tr>\n
817M40<\/td>\n0.36-0.44<\/td>\n0.1-0.4<\/td>\n0.45-0.7<\/td>\n\u22640.035<\/td>\n\u22640.04<\/td>\n1.0-1.4<\/td>\n1.3-1.7<\/td>\n0.2-0.35<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mechanical Properties<\/h4>\n

1.Tensile strength: 1020MPa
\n2.Yield point: 945MPa
\n3.Percentage reduction of area after fracture: 55%
\n4.Elongation after fracture: 13%
\n5.Impact test (+20\u00b0C): Transverse \u2013 27~32J; Longitud \u2013 45~50J<\/p>\n

Forging EN24\/817M40 Steel<\/h4>\n

Recommended Forging temperature:850\u2103- 1150\u2103,and final forging temperature should not below\u00a0 850\u2103.Cooling as slowly as possible in the furnace\u00a0 to prevent surface crack,and annealing immediately after forged is recommended.<\/p>\n

Is\u0131l \u0130\u015flem<\/h4>\n

Normalle\u015ftirme<\/b><\/strong><\/p>\n

Normalizing is used to refine the structure of forgings that might have cooled non-uniformly after forged,and considered as a conditioning treatment before final heat treatment.Normalizing temperature for EN24 steel should be carried out between 850\u2103-880\u2103 with several steps,keep proper holding time depend on the steel size for the steel to be thoroughly heated to complete the ferrite to austenite transformation.Cool in still air.<\/p>\n

<\/b>Tavlama<\/b><\/strong><\/p>\n

Annealing is generally applied after forged and before machining to reduce surface harness,and get finer grain,get good machinability.<\/p>\n

Soft Annealing<\/b><\/strong>:Heat the steel to the temperaure 650\u2103-680\u2103,Holding temperature\u00a0for the steel heating, Cool slowly in the furnace.<\/p>\n

Full Annealing<\/b><\/strong>:Heat the steel to the temperaure 820-850\u2103 with three steps ,Holding temperature for the steel heating,Cool in furnace.Surface hardness after annealing will be below 248HB.<\/p>\n

<\/b>Sertle\u015ftirme<\/b><\/strong><\/p>\n

Hardening temperature is carried out from an austenitizing temperature of 820-850\u00baC with several steps,keep suitable time for the steel to be thoroughly heated,\u00a0 oil quenching is recommended.<\/p>\n

<\/b>Temperleme<\/b><\/strong><\/p>\n

Tempering process should be followed after quenching immediately.Tempering at a suitable temperature not exceeding 660\u00baC .<\/p>\n

Uygulama<\/h4>\n

EN24\/817M40 steel is widely used as engineering steel in Automobile Industry, Construction, Pharmaceutical \/ Chemical Industry, Oil & Gas Industry.It is often utilized where other alloy steels do not have the hardenability to give the strength required. For highly stressed parts it is also an excellent choice.<\/p>\n

Typical Applications:<\/p>\n

    \n
  • Heavy-duty axles &\u00a0 Shafts<\/li>\n
  • Punches & Dies<\/li>\n
  • Studs & Bolts<\/li>\n
  • Gears & Rings<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

    817M40 Alloy Steel 817M40 is a high tensile alloy steel, usually supplied in the heat treated T condition, although several heat treatments are available with specification limitations on size. The steel exhibits good shock and wear resisting properties. Main uses include gears, bolts and studs, shafts spindles and forgings. The material differs from 709M40 by […]<\/p>\n","protected":false},"featured_media":4502,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[],"product_cat":[17,24],"product_tag":[],"class_list":{"0":"post-4501","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-all-products","7":"product_cat-alloy-steel","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/product\/4501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/comments?post=4501"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/media\/4502"}],"wp:attachment":[{"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/media?parent=4501"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/product_brand?post=4501"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/product_cat?post=4501"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/tr\/wp-json\/wp\/v2\/product_tag?post=4501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}