For casual reference, some public libraries in Japan have JIS handbooks. However, for professional use, always purchase the official PDF.
If you are a student, check your university's engineering library. Many universities have institutional subscriptions to standards databases like TechStreet or IHS Markit.
Engineers, manufacturers, and metallurgists rely on standardizations to ensure material consistency, safety, and performance. In the realm of non-ferrous metallurgy, is a vital Japanese Industrial Standard that specifies requirements for copper alloy castings. This comprehensive guide breaks down everything you need to know about this standard, its practical applications, chemical composition, and how to source the official documentation. What is JIS H 5114?
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The standard classified materials into grades (e.g., Class 1 through Class 4/AlBC1–AlBC4) based on their composition and mechanical properties:
This standard is the benchmark for brass castings used in valves, flanges, and pipe fittings in the Japanese industrial market and beyond. If you have searched for the term , you are likely looking for the official document to verify material properties, chemical compositions, or mechanical requirements.
The standard specifies minimum requirements for: For casual reference, some public libraries in Japan
Each grade alters the foundational mix of copper and aluminum by tuning the ratios of iron and nickel to prioritize specific physical characteristics:
: Defines precise limits for mechanical properties and chemical integrity.
For modern engineering or new manufacturing setups, purchase the current unified document: JIS H 5120 from the GlobalSpec Standards Library. This comprehensive guide breaks down everything you need
You have three legitimate options to get the PDF:
Silicon bronzes provide a combination of high castability, good weldability, and solid corrosion resistance. They are frequently selected for valves, plumbing fixtures, and decorative castings. Key Technical Specifications Found in the PDF
Aluminiums bronzes formulated under JIS H 5114 are selected specifically for environments where standard brass or tin-bronze alternatives fail under load. The mechanical testing metrics defined within the specification ensure optimal performance bounds:
High-quality rods and bars with uniform microstructure and few defects. Chemical Composition (Typical Weight %) Copper (Cu) Aluminum (Al) Nickel (Ni) Manganese (Mn) 8.0–10.0 8.0–10.5 8.5–10.5 Key Performance Characteristics High Strength
Gears, rollers for papermaking, bearings, bushes, and valve seats.