What is the standard stainless steel grade for butt hinges as per IS 12817?

The primary grade specified is Grade X04Cr19Ni9 of IS 6911, which is equivalent to AISI 304 (Clause 4.1).

How is the durability of a hinge tested according to this standard?

It is tested with an endurance test of 200,000 operating cycles and a salt spray test for 96 hours to check for corrosion resistance (Table 3).

What are the common sizes specified in the code?

Common sizes (Length x Width in mm) include 125x89, 100x75, 75x63, and 50x37, each with a specified leaf thickness (Table 1).

What markings should be present on a hinge conforming to this IS code?

The hinge should be legibly and indelibly marked with the manufacturer's name or trademark. It may also bear the BIS Certification Mark (Clause 11).

IS 12817

: 2013

Stainless steel butt hinges - Specification

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This standard specifies the requirements for materials, dimensions, manufacture, and performance of stainless steel butt hinges used in building construction. It details various sizes, material grades (primarily SS 304), and mandates performance tests like endurance and corrosion resistance to ensure quality and durability.

Stainless steel butt hinges - Specification

Quick Reference Values

Primary Stainless Steel GradeX04Cr19Ni9 (AISI 304)

Endurance Test Cycles200,000 cycles

Corrosion Resistance Test (Salt Spray)96 hours minimum without red rust

Typical Thickness for 100mm Hinge2.5 mm or 3.0 mm

Tolerance on Hinge Length (up to 125 mm)±0.8 mm

Tolerance on Hinge Width (up to 75 mm)±0.8 mm

Practical Notes

Always verify the stainless steel grade. Grade 304 is specified for good corrosion resistance; lower grades like 202 are visually similar but will rust much faster, especially in coastal areas.

Check for the BIS mark as an assurance of quality and compliance with performance tests like the 200,000-cycle endurance test.

Ensure hinges are free from sharp edges and burrs (as per Clause 5.3), which can be a safety hazard and indicate poor manufacturing quality.