Materials for Ship Anchors

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All anchors are to be manufactured from materials meeting the requirements of the classification society rules for Materials and Welding and produced by a manufacturer approved by classification society rules.
Cast steel anchor flukes, shanks, swivels and shackles are to be manufactured and tested in accordance with the requirements of classification society rules and comply with the requirements for castings for welded construction.
The steel is to be fine grain treated with aluminum.
Cast steel anchor flukes and shanks are to have integrally cast test coupons. The test coupons are not to be detached until the full heat treatment cycle has been completed. The method of detachment is not to physically or metallurgically damage the anchor component. Test coupons are not to be detached until they have been stamped by the Surveyor for identification. Test coupons are to be traceable to the cast components they represent. Test reports are to be traceable to the test coupons.
Two test programs “A” and “B” are permitted in accordance to classification society rules. Charpy V notch (CVN) impact testing of cast material is required. Special consideration is to be given to the use of other grades of steels for the manufacture of swivels.
Forged steel anchor pins, shanks, swivels and shackles are to be manufactured and tested in accordance with the requirements of classification society rules. Shanks, swivels and shackles are to comply with the requirements for carbon and carbon-manganese steels for welded construction. Special consideration is to be given to the use of other grades of steels for the manufacture of swivels.
Rolled plates and bars for fabricated steel anchors are to be manufactured and tested in accordance with the requirements of classification society rules.
Rolled bars intended for pins, swivels and shackles are to be manufactured and tested in accordance with the requirements of classification society rules.

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