Tag Archives: Hot Acids

Hastelloy vs Tantalum Bolts for Sulfuric Acid Corrosion in Lithium Extraction

Posted on January 3, 2018 by dean

Q:  I’m running a lithium extraction process where a mineral called spodumene is roasted in a mixture of sulphuric acid (95-97%) at at about 150°C to form lithium sulfate. I’ve to use Hastelloy C276 for some process equipment but I’m still experiencing corrosion. Please help. A:  Hastelloy C276 bolts typically … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners, Technical Questions | Tagged , , , , , , , , , , , , , | Leave a comment

Most Common of Hastelloy Fasteners Reviewed

Posted on July 25, 2017 by dean

hastelloy-grades_smallHastelloy alloys have long been the gold standard of corrosion resistant bolts; only out performed by metals like Zirconium and Tantalum. This family of high performance nickel alloys can handle strong acids like hydrochloric, sulfuric, acetic, formic and phosphoric acids, yet each grade actually exhibits its own strengths in dealing with specific acids and niche environments. … Continue reading →

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