Which suffix indicates 9% chromium with 1% Molly/vanadium?

Which suffix indicates 9% chromium with 1% Molly/vanadium?

• A. -B9
• B. -B8
• C. -B6
• D. -A1

Answer: (A)

In this coding system, the suffix on an alloy designation tells you the chromium content and a typical alloying add-in. The B-series with a number after it represents the chromium percentage, and the accompanying context notes that molybdenum or vanadium is present in small amounts to boost properties. A suffix of -B9 corresponds to about 9% chromium with roughly 1% molybdenum or vanadium, which matches the specification given. The other suffixes point to different chromium levels—8%, 6%, or a different series—so they don’t fit the described composition. So the suffix indicating 9% chromium with 1% molybdenum/vanadium is -B9.

In this coding system, the suffix on an alloy designation tells you the chromium content and a typical alloying add-in. The B-series with a number after it represents the chromium percentage, and the accompanying context notes that molybdenum or vanadium is present in small amounts to boost properties. A suffix of -B9 corresponds to about 9% chromium with roughly 1% molybdenum or vanadium, which matches the specification given. The other suffixes point to different chromium levels—8%, 6%, or a different series—so they don’t fit the described composition. So the suffix indicating 9% chromium with 1% molybdenum/vanadium is -B9.