What is the typical molybdenum content range used in alloy steel?

What is the typical molybdenum content range used in alloy steel?

• A. 0.10-4.0%
• B. 0.01-0.05%
• C. 5-10%
• D. 0.001-0.009%

Answer: (D)

Molybdenum is added to alloy steel to boost hardenability, strength, and high-temperature performance. In practice, it shows up in small but meaningful amounts—typically around a tenth of a percent and often up to about a percent in many grades. The range starting at about 0.10% best matches this common zone and also accommodates higher Mo contents found in some specialized alloys. The other options are either far too low to have an effect or far too high for what’s typical in alloy steels. So, the range beginning near 0.10% is the most representative choice.

Molybdenum is added to alloy steel to boost hardenability, strength, and high-temperature performance. In practice, it shows up in small but meaningful amounts—typically around a tenth of a percent and often up to about a percent in many grades. The range starting at about 0.10% best matches this common zone and also accommodates higher Mo contents found in some specialized alloys. The other options are either far too low to have an effect or far too high for what’s typical in alloy steels. So, the range beginning near 0.10% is the most representative choice.