Weapons-grade as an adjective is of a purity suitable for the manufacture of weapons while Industrial-strength as an adjective is having a level of potency, concentration, or durability suitable for industrial tasks, as opposed to merely household tasks.
Part of speech: adjective
Definition: of a purity suitable for the manufacture of weapons
Part of speech: adjective
Definition: Having a level of potency, concentration, or durability suitable for industrial tasks, as opposed to merely household tasks.
We hope you now know whether to use Weapons-grade or Industrial-strength in your sentence.