The -B9 suffix indicates which composition?

The -B9 suffix indicates which composition?

• A. 9% chrome, 1% Molly/vanadium
• B. 9% chrome, 1% molly
• C. 9% chrome, 2% molly
• D. 9% molly, 1% vanadium

Answer: (A)

The suffix communicates the filler metal’s alloying makeup: it signals about 9% chromium, with roughly 1% of a secondary alloying element such as molybdenum or vanadium. The chromium content is what gives stainless-type fillers their corrosion resistance, while the small amount of molybdenum or vanadium adds strength or pitting resistance. So the option that matches this pattern is the one listing 9% chromium and 1% molybdenum or vanadium. The other choices would place the second element at a different percentage or swap the primary element, which doesn’t align with how this suffix is defined.

The suffix communicates the filler metal’s alloying makeup: it signals about 9% chromium, with roughly 1% of a secondary alloying element such as molybdenum or vanadium. The chromium content is what gives stainless-type fillers their corrosion resistance, while the small amount of molybdenum or vanadium adds strength or pitting resistance.

So the option that matches this pattern is the one listing 9% chromium and 1% molybdenum or vanadium. The other choices would place the second element at a different percentage or swap the primary element, which doesn’t align with how this suffix is defined.