{"id":17111,"date":"2026-01-15T15:52:30","date_gmt":"2026-01-15T07:52:30","guid":{"rendered":"https:\/\/daxuns.com\/?p=17111"},"modified":"2026-01-15T16:00:07","modified_gmt":"2026-01-15T08:00:07","slug":"what-you-need-to-know-about-grade-2-titanium","status":"publish","type":"post","link":"https:\/\/daxuns.com\/de\/what-you-need-to-know-about-grade-2-titanium\/","title":{"rendered":"Was Sie \u00fcber Titan Grad 2 wissen m\u00fcssen"},"content":{"rendered":"
Grade 2 titanium (UNS R50250) represents the optimal balance of formability, corrosion resistance, and cost within the commercially pure titanium spectrum. As the most widely specified unalloyed titanium grade globally, it serves as the backbone for chemical processing equipment, medical implants, and marine systems where failure is not an option. Yet engineers frequently default to this grade without understanding its precise limitations\u2014particularly regarding temperature thresholds and chloride exposure limits. This guide provides a detailed analysis of Grade 2 titanium, helping engineers gain a thorough understanding of this most commonly used pure titanium material.<\/p>\n
<\/p>\n
Grade 2 titanium is a <\/span>single-phase alpha titanium alloy<\/span><\/strong> belonging to the commercially pure (CP) titanium family. Unlike alloyed grades (e.g., Grade 5 Ti-6Al-4V), Grade 2 contains no intentional alloying elements\u2014its mechanical properties derive entirely from controlled interstitial impurities within a high-purity titanium matrix. This fundamental characteristic defines its unique position in material selection: offering superior corrosion resistance compared to alloyed grades while maintaining adequate strength for many structural applications.<\/span><\/p>\n This composition creates a material with approximately 20% higher strength than Grade 1 while retaining 85% of Grade 1’s superior ductility\u2014making it the most versatile commercially pure grade.<\/p>\n Grade 2 titanium maintains a <\/span>hexagonal close-packed (HCP) alpha phase structure<\/span><\/strong> at all service temperatures. Unlike alpha-beta alloys, it has no phase transformation until melting (1668\u00b0C), which provides exceptional dimensional stability during thermal cycling. The absence of beta phase eliminates galvanic corrosion risks between phases\u2014a critical advantage in corrosive environments.<\/span><\/p>\n The grain structure is typically equiaxed with ASTM grain size 5-7 after standard annealing. For medical applications requiring ASTM F67 compliance, additional vacuum annealing produces grain size 2-3 to enhance fatigue resistance. Electron microscopy reveals minimal interstitial atom clustering when properly processed, preserving ductility.<\/p>\n Grade 2 titanium evolved from early titanium development in the 1950s. Initially, titanium was produced with inconsistent purity, causing unpredictable corrosion failures. The development of vacuum arc remelting in the 1960s enabled controlled interstitial levels, leading to ASTM’s formal classification in 1973. Grade 2 emerged as the optimal balance after extensive testing in DuPont’s chemical plants revealed that 0.25% oxygen provided sufficient strength without compromising the corrosion resistance that made titanium valuable.<\/span><\/p>\n Chemical Processing:<\/span><\/strong><\/p>\n Medical Devices:<\/span><\/strong><\/p>\n Marine Engineering:<\/span><\/strong><\/p>\n Aerospace:<\/span><\/strong><\/p>\n Q: How does Grade 2 compare to 316L stainless steel in seawater?<\/span><\/strong> Q: Is Grade 2 suitable for cryogenic applications below -100\u00b0C?<\/span><\/strong> Grade 2 titanium<\/strong> offers the optimal balance of corrosion resistance, formability, and cost for demanding applications in chemical processing, marine systems, medical devices, and cryogenic environments.Although the initial cost is higher than stainless steel, the long-term project cost is lower than stainless steel.<\/p>\n Daxun Alloy Co, Ltd.<\/strong> provides premium secondary titanium materials to global customers, certified to various standards. Contact our professional engineers for consultation immediately.<\/p>","protected":false},"excerpt":{"rendered":" Grade 2 titanium (UNS R50250) represents the optimal balance of formability, corrosion resistance, and cost within the commercially pure titanium spectrum. As the most widely specified unalloyed titanium grade globally, it serves as the backbone for chemical processing equipment, medical implants, and marine systems where failure is not an option. […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-17111","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"\n
<\/p>\nDetailed Chemical Composition<\/span><\/strong><\/h6>\n
\n
Crystallographic Structure<\/span><\/strong><\/h6>\n
Manufacturing Process<\/span><\/strong><\/h6>\n
\n
<\/p>\nGlobal Standard Equivalents and Specifications:<\/span><\/strong><\/h6>\n
\n
Gr.2 Historical Development Context:<\/span><\/strong><\/h6>\n
Mechanical and Physical Properties<\/span><\/strong><\/span><\/h4>\n
Mechanische Eigenschaften:<\/span><\/strong><\/h6>\n
\n
Physical Constants:<\/span><\/strong><\/h6>\n
\n
Corrosion Resistance: Where Grade 2 Excels and Fails<\/span><\/strong><\/span><\/h4>\n
Advantages<\/h6>\n
\n
Critical Limitations:<\/span><\/strong><\/h6>\n
\n
Critical Applications of Grade 2 Titanium<\/span><\/strong><\/span><\/h4>\n
\n
\n
\n
\n
Frequently Asked Questions About Grade 2 Titanium<\/span><\/strong><\/span><\/h4>\n
\nA: Grade 2 provides fundamentally different protection. 316L relies on chromium-molybdenum passive film vulnerable to chlorides above 60\u00b0C. Grade 2’s titanium dioxide film remains stable to 110\u00b0C in flowing seawater. In stagnant zones with biofouling, 316L typically fails within 18 months while Grade 2 operates 20+ years. The initial cost premium (3-4x) is offset by elimination of replacement costs in critical marine systems.<\/span><\/p>\n
\nA: Absolutely\u2014this is where Grade 2 excels. Unlike many alloys that become brittle at low temperatures, Grade 2’s ductility increases as temperature drops. NASA specifies it for liquid hydrogen (-253\u00b0C) transfer lines per AMS 2759\/3. The key requirement is proper annealing to prevent hydrogen pickup during fabrication, which could cause embrittlement.<\/span><\/p>\nSchlussfolgerung<\/span><\/strong><\/span><\/h4>\n