What type of blades do metal scrapers have on their body sections?

• A. Brass blades
• B. Stainless steel blades
• C. Aluminum blades
• D. High carbon spring steel blades

Answer: (D)

Choosing blade material that balances edge retention, toughness, and ease of maintenance is what makes blades on metal scrapers durable enough for use on body sections. High carbon spring steel gives a hard, wear-resistant edge that stays sharp longer and can be heat-treated to a good hardness, while its springy toughness resists chipping or breaking when you scrape uneven surfaces. It’s also easy to resharpen in the field. Brass wears quickly, stainless steel can be harder to sharpen and may not hold a keen edge as long in heavy scraping, and aluminum is too soft for sustained use.