Cr-V steel is an alloy tool steel containing Cr-V alloy elements. After heat treatment, its hardness is above 60HRC (Rockwell hardness), and it has good wear resistance under certain working conditions. Suitable for strong impact and high wear resistance environment, suitable for making wrenches and other tools.
High carbon steel, usually called tool steel, has a carbon content between 0.60% and 1.70%, and can be quenched and tempered. Hammer, crowbar, etc. Made of steel with carbon content of 0.75%; Cutting tools such as drills, taps and reamers are made of steel with carbon content of 0.90% to 1.00%.
Extended data:
Matters needing attention in purchasing hardware tools
1. Products from enterprises with high reputation, stable quality and good after-sales service should be selected.
2. First, check whether the labels and signs of the purchased products are complete (including the implementation standard, grade, name, address and production date of the products), whether the packaging is firm, and whether the contents of the instructions are consistent with the products, so as to prevent exaggeration from being inconsistent with the facts.
3. Observe the appearance quality of the product, including whether the lock head, lock body, lock tongue, handle and cover parts and related accessories are complete, whether the surface colors of electroplated parts and painted parts are bright and uniform, and whether there are signs of corrosion, oxidation and damage.