: JIS H4100 is generally more stringent on dimensional tolerances and surface quality than ASTM or EN equivalents, reflecting Japan’s high-quality manufacturing culture.
The standard references several aluminum alloy designations. Unlike the 4-digit system in the US (AA), JIS uses its own notation, though it is largely harmonized. The most critical alloys include: jis h4100 standard pdf
Recent versions, such as the 2015 and 2022 editions, are heavily based on ISO 6362 series : JIS H4100 is generally more stringent on
Specifies various extruded shapes, including those with hollow or solid cross-sections. Alloys Covered: Includes common series such as (pure aluminum), (magnesium alloyed), and (magnesium and silicon alloyed). Tolerances: JIS uses its own notation