How many groups of timber are specified for packaging?

Four groups (Group I, II, III, and IV) are specified, with Group I being the strongest and heaviest, suitable for very heavy loads. (Clause 3)

What is the maximum allowed moisture content in timber for packaging?

The moisture content shall not exceed 20 percent at the time of fabrication. (Clause 4.2)

Which timber group is suitable for packing heavy machinery?

Group I and Group II timbers are recommended for heavy and valuable contents. (Table 1, Note 2)

Is Mango wood suitable for packaging?

Yes, Mango (Mangifera indica) is listed under Group III, making it suitable for general purpose packaging for average contents. (Annex A)

IS 6662

: 1993

Timber species suitable for wooden packaging -

CurrentSpecializedSpecificationMaterials Science · Timber and Timber Stores

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This standard classifies Indian timber species into four groups based on their properties like strength, shock resistance, and nail-holding power. It provides a comprehensive list of suitable species for manufacturing wooden packaging like boxes and crates, guiding the selection of appropriate material for the intended load and use.

Timber species suitable for wooden packaging -

Quick Reference Values

Maximum permissible moisture content20 %

Number of timber suitability groups4 (Group I, II, III, IV)

Basis for groupingStrength as a beam, nail/screw holding power, and shock resistance

Timber Group for heavy machineryGroup I & II

Timber Group for general domestic goodsGroup III & IV

Practical Notes

Group I and II timbers are for heavy-duty or export packaging, while Group III and IV are for general domestic packaging of lighter goods.

Ensure moisture content of the timber does not exceed 20% at the time of fabrication to prevent warping, fungal attack, and dimensional instability.

For international shipping, timber packaging must also comply with ISPM 15 standards, which typically requires heat treatment or fumigation to prevent the spread of pests.