{"id":6785,"date":"2024-09-12T10:28:48","date_gmt":"2024-09-12T10:28:48","guid":{"rendered":"https:\/\/haynesintl.com\/?page_id=6785"},"modified":"2024-09-12T10:28:52","modified_gmt":"2024-09-12T10:28:52","slug":"haynes-230-hr-120-alloys-for-light-weight-vacuum-furnace-heat-treat-baskets-tech-brief","status":"publish","type":"page","link":"https:\/\/haynesintl.com\/en\/haynes-230-hr-120-alloys-for-light-weight-vacuum-furnace-heat-treat-baskets-tech-brief\/","title":{"rendered":"HAYNES\u00ae<\/sup> 230\u00ae<\/sup> & HR-120\u00ae<\/sup> alloys for Light Weight Vacuum Furnace Heat Treat Baskets Tech Brief"},"content":{"rendered":"\n

HAYNES\u00ae<\/sup> Alloys for Lightweight Vacuum Heat Treat Furnace Baskets and Fixtures<\/h2>\n\n\n\n

Every time you run your vacuum furnace, it has to heat and cool whatever you put in it. When you use HAYNES\u00ae<\/sup> high-temperature alloys for all of your baskets and fixturing, what you don\u2019t put in the furnace is unnecessary weight. HAYNES HR-120\u00ae<\/sup>and 230\u00ae<\/sup> alloys not only provide superior performance compared to traditional heat treating fixture materials, they do it with thinner section thickness construction. This allows you to save three ways: (1) reduced heating and cooling cycle times, (2) reduced part rejection from poor quench rate, and (3) increased furnace load capability without increased cycle time or reduced quench rate. Compare the sizes of these alloys required for field-proven equivalent or superior performance relative to traditional materials:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Comparative Stress Rupture Strengths<\/h3>\n\n\n\n

Resistance to sagging or distortion of vacuum furnace baskets and fixtures at elevated temperatures is directly related to the creep or stress rupture strength of the material of construction. Both 230\u00ae<\/sup> and HR-120\u00ae<\/sup> alloys exhibit large strength advantages over traditional alloys. This allows for either higher loading capability, or significant reduction in the basket or fixture section thickness.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Nominal Composition<\/h3>\n\n\n\n

HR-120\u00ae<\/sup> Alloy<\/h3>\n\n\n\n

\n

\n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n Nickel <\/td>\n \n 37 <\/td>\n <\/tr>\n
\n Cobalt <\/td>\n \n 3 max. <\/td>\n <\/tr>\n
\n Iron <\/td>\n \n Balance <\/td>\n <\/tr>\n
\n Chromium <\/td>\n \n 25 <\/td>\n <\/tr>\n
\n Tungsten <\/td>\n \n 2.5 max. <\/td>\n <\/tr>\n
\n Molybdenum <\/td>\n \n 2.5 max. <\/td>\n <\/tr>\n
\n Manganese <\/td>\n \n 0.7 <\/td>\n <\/tr>\n
\n Silicon <\/td>\n \n 0.6 <\/td>\n <\/tr>\n
\n Aluminum <\/td>\n \n 0.1 <\/td>\n <\/tr>\n
\n Carbon <\/td>\n \n 0.05 <\/td>\n <\/tr>\n
\n Boron <\/td>\n \n 0.004 <\/td>\n <\/tr>\n
\n Niobium <\/td>\n \n 0.7 <\/td>\n <\/tr>\n
\n Nitrogen <\/td>\n \n 0.20 <\/td>\n <\/tr>\n <\/table>\n<\/div>