Extrusions must be free from detrimental defects. The standard regulates acceptable levels of surface imperfections, such as extrusion lines, scratches, pitting, and die marks. Comparative Equivalents

For professionals in engineering, manufacturing, construction, and procurement, understanding this standard is essential to ensure product reliability and conformity. This article provides an in-depth overview of the , including its scope, alloy classifications, mechanical properties, and applications. 1. What is JIS H4100?

): The percentage of stretch before failure, indicating ductility. 2. Dimensional Tolerances

Handrails, modular profiles, scaffolding, and storage racks.

These detailed classifications allow manufacturers to choose the appropriate level of precision for their product.

is the definitive Japanese Industrial Standard for extruded aluminium and aluminium alloy profiles . Administered by the Japanese Standards Association (JSA) under the supervision of the Japanese Industrial Standards Committee (JISC), this framework regulates dimensions, chemical composition, mechanical properties, and tolerance allowances.

JIS H 4100: 2015, First English edition published in 2016-04

: Known for high strength and weldability, frequently utilized in marine and vehicle construction. Jis H 4100 - 2015 | PDF - Scribd

: Window frames, curtain walls, roofing structures, and scaffolding.

A critical section of the JIS H4100 PDF covers geometric accuracy. It defines acceptable limits for: Cross-sectional dimensions (thickness, width, height). Straightness and twist tolerances over specific lengths. Flatness of flat surfaces. Angular tolerances for corners and bends. 4. International Equivalents to JIS H4100