The solid-state bonding between aluminum and another metal or another aluminum alloy generally requires a control of the magnesium level to ____%.

The solid-state bonding between aluminum and another metal or another aluminum alloy generally requires a control of the magnesium level to ____%.

• A. 0.1% to 0.2%
• B. Less than 0.05%
• C. 0.2% to 0.3%
• D. More than 0.5%

Answer: (B)