: Differentiates between " Ordinary Class " and " Special Class " for dimensional accuracy based on specific application needs.

is the Japanese Industrial Standard for aluminum and aluminum alloy extruded profiles . It defines the manufacturing requirements, chemical compositions, and mechanical properties for a wide range of extruded shapes used in construction, automotive, and industrial applications. 1. Scope and Application

: JIS H4100 is generally more stringent on dimensional tolerances and surface quality than ASTM or EN equivalents, reflecting Japan’s high-quality manufacturing culture.

Go to webdesk.jsa.or.jp, search "H4100," and order the English-Japanese bilingual PDF. Then, download it, bookmark the mechanical properties table (Table 2), and the tolerance tables (Tables 5-12). Your next extrusion project will thank you.

Precise limits for sectional dimensions, length, flatness, twist, and corner radii. Testing Protocols: Specific methods for chemical analysis (referencing JIS H 1305 to 1363 ), tensile tests ( JIS Z 2241 ), and hardness tests.

: Mandates specific testing procedures, including tensile tests (per JIS Z 2241 ), hardness tests, and analytical tests for chemical composition. Global Context

JIS H 4100 standard, titled "Aluminium and aluminium alloy extruded profiles," is a critical Japanese Industrial Standard used to specify requirements for extruded aluminum and aluminum alloy profiles (shapes). The current active version is JIS H 4100:2022 , which superseded the 2015 edition. www.vosbltd.com Scope and Application

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jis h4100 standard pdf