In SAE-AISI designation, boron in steel is indicated by which pattern?

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Study for the AIT Welder 2nd Period Test. With flashcards and multiple choice questions, each question offers hints and explanations. Prepare confidently for your certification!

Multiple Choice

In SAE-AISI designation, boron in steel is indicated by which pattern?

Explanation:
In SAE-AISI designations, boron is shown by inserting the letter B in the middle of the four-digit grade. This creates the pattern two digits, B, two digits (xxBxx). The B marks boron as an alloying addition to that grade, while the digits around it reflect the base composition and other alloying details. This convention distinguishes boron-containing steels from plain carbon steels or other alloys that don’t use this middle-letter pattern. Other formats don’t follow the standard SAE-AISI encoding, so they aren’t used to indicate boron.

In SAE-AISI designations, boron is shown by inserting the letter B in the middle of the four-digit grade. This creates the pattern two digits, B, two digits (xxBxx). The B marks boron as an alloying addition to that grade, while the digits around it reflect the base composition and other alloying details. This convention distinguishes boron-containing steels from plain carbon steels or other alloys that don’t use this middle-letter pattern. Other formats don’t follow the standard SAE-AISI encoding, so they aren’t used to indicate boron.

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