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IS 4650 : 1968wooden anvil blocks

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International Comparison — Coming Soon
CurrentRareSpecificationMaterials Science · Timber and Timber Stores
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OverviewValues2InternationalTablesFAQ3Related

IS 4650:1968 is the Indian Standard (BIS) for wooden anvil blocks. This standard prescribes the requirements regarding the material, dimensions, manufacture, and finish of wooden anvil blocks used for supporting hand-working anvils in workshops and smithies.

wooden anvil blocks

Overview

Status
Current
Usage level
Rare
Domain
Materials Science — Timber and Timber Stores
Type
Specification
International equivalents
Typically used with
IS 287IS 399
Also on InfraLens for IS 4650
2Key values1Tables3FAQs
Practical Notes
! Select dense, heavy hardwoods capable of absorbing high-impact shock loads without splitting or crushing.
! Ensure the top and bottom faces are cut perfectly parallel and flat to prevent the anvil from rocking during forging operations.
! Timber must be adequately seasoned to prevent shrinkage and cracking over time in dry workshop environments.
Frequently referenced clauses
Cl. 3Material and Species of TimberCl. 4Dimensions and TolerancesCl. 5Manufacture and FinishCl. 6Preservation and Treatment
Pulled from IS 4650:1968. Browse the full clause & table index below in Tables & Referenced Sections.
timberwoodhardwood

International Equivalents

Similar International Standards
GG-S-752BU.S. General Services Administration (GSA), USA
MediumWithdrawn
Stand, Blacksmith's-Anvil
Covers the functional requirement for an anvil stand, allowing for both wood and fabricated steel construction.
BS 5756:1997British Standards Institution (BSI), UK
LowWithdrawn
Specification for visual strength grading of temperate hardwood
Specifies visual grading of hardwood for structural use, relevant for material selection but not the final product.
Key Differences
≠IS 4650 is exclusively for wooden blocks and specifies Indian timber species (Sal, Babul, etc.), whereas international practices and specifications like GG-S-752B are broader, explicitly allowing for fabricated steel stands as an alternative.
≠The Indian standard is highly prescriptive, mandating a single piece of wood for the block. International best practices and historical standards are more flexible, often allowing for laminated or built-up wooden blocks, which can be more stable and use timber more efficiently.
≠IS 4650 specifies exact dimensions for reinforcement straps (40 x 6 mm mild steel). Equivalent international standards typically focus on the performance of the reinforcement (i.e., that it must prevent splitting) rather than prescribing specific material dimensions.
Key Similarities
≈The fundamental purpose is identical: to provide a stable, durable, and shock-absorbing base for a blacksmith's anvil at a proper working height.
≈Both the IS standard and general international principles require the use of sound, solid timber that is free from decay, large loose knots, or other major defects that would compromise structural integrity and safety.
≈All related standards emphasize the need for dimensional stability, requiring well-seasoned timber to minimize cracking and warping during its service life. IS 4650 achieves this by specifying a maximum moisture content.
≈The use of metal straps or bands near the top and bottom of the block to prevent splitting from the anvil's impact and wood's natural checking is a common feature in both the IS standard and traditional international designs.
Parameter Comparison
ParameterIS ValueInternationalSource
Primary MaterialSpecified Indian hardwoods such as Sal (Shorea robusta), Babul (Acacia nilotica), Laurel (Terminalia tomentosa).Heavy, dense hardwoods like Oak, Maple, or Hickory; also allows for fabricated steel.GG-S-752B
Construction MethodShall be made from one solid piece of wood.Permits solid log, built-up/laminated wood block, or welded steel construction.GG-S-752B
Moisture ContentShall not exceed 25% at the time of supply.No specific value, but requires 'well-seasoned' timber, typically implying a moisture content below 20% for stability.General practice / GG-S-752B
Standard Heights500 mm, 550 mm, and 600 mm.Not specified; height is determined by the purchaser to suit the user's knuckle height.GG-S-752B
Reinforcement StrapsTwo mild steel flats, 40 mm wide and 6 mm thick.Requires two steel bands or straps for wooden blocks, dimensions not specified, performance-based.GG-S-752B
Permissible DefectsSpecifies limits on knots, cracks, and presence of heartwood.Requires 'sound wood, free from defects which may impair strength or durability'. Less numerically defined.GG-S-752B
⚠ Verify details from original standards before use

Key Values2

Quick Reference Values
moisture contentMaximum 15 percent
slope of grainNot exceeding 1 in 15

Tables & Referenced Sections

Key Tables
Table 1 - Recommended Species of Timber for Anvil Blocks
Key Clauses
Clause 3 - Material and Species of Timber
Clause 4 - Dimensions and Tolerances
Clause 5 - Manufacture and Finish
Clause 6 - Preservation and Treatment

Related Resources on InfraLens

Cross-Referenced Codes
IS 287:2022Code of Practice for Design of Timber Structu...
→
IS 399:1966Classification of Commercial Timbers and Thei...
→

Frequently Asked Questions3

What is the primary function of a wooden anvil block?+
It serves as a stable, shock-absorbing base that dissipates impact energy and vibrations from forging operations.
What kind of wood is suitable for anvil blocks?+
Heavy, dense hardwoods like Sal, Babul, or other shock-resistant timber species classified under IS 399.
What is the maximum allowed moisture content?+
The moisture content should generally not exceed 15% to ensure stability and prevent checking.

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