Gerber 31-002070 Bear Grylls Survival Hatchet with Nylon Sheath


Gerber 31-002070 Bear Grylls Survival Hatchet with Nylon Sheath Video

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Blade Type Information: 3CR13 Stainless Steel

3CR13 stainless steel is a type of Chinese graded stainless steel similar to the 420J2 series popular in the continental United States. Regardless of how it is called, this steel is one of the most popular metals on the market when creating affordable and durable knives. It is extremely easy to sharpen this particular metal to a fine edge or point. Add the fact that the 3CR13 adds alloys to improve the natural resistance of corrosion already found in stainless steel and you have a tough metal made for daily use by the average consumer. Knife makers around the world like to use and manipulate this steel, creating inexpensive yet durable blades. In fact, this is one of the most commonly used metals for divers because of its intense resistance to corrosion, no matter the weather conditions.

The Chinese grade goes a little further by adding Molybdenum and Vanadium to the raw metal. Adding Molybdenum increases the strength of the metal when forging new designs. The hardness of the material itself goes higher, making the metal tougher overall. This hardness correlates directly with major improvements in machine work along with making the already corrosion resistant material even harder to damage. Adding vanadium to the mixture also adds to the strength of the metal. It becomes more wear resistant, adding years of life to the sharp edges and specialty weapons. It increases the toughness, allowing the metal to be used daily during intense work regimes.

This metal is ideal for manufacturing smaller knives with sharper blades. The inexpensive cost adds to the appeal for the average consumer. Companies are better equipped to deliver reliable, sharp blades for everyday life, along with utility knives made specifically for extreme outdoor conditions such as scuba diving and all around wilderness survival knifes, daggers, and blades.

Handle Material Information: Polypropylene

Polypropylene (aka polypropene) is a thermoplastic polymer used in a wide variety of products as it is rugged and resistant to many chemical solvents, bases and acids. Polypropylene was discovered in 1954 and became popular very quickly. It shows improved strength, stiffness and higher temperature capability over polyethyleneand also happens to be one of the lightest plastics available.

Polypropylene shows excellent resistance to stress and high resistant to cracking, making is an excellent material for handles and other imapct bearing structures. It has a high melting point of over 350 degree farenheight and, as mentioned above, is highly resistant to most alkalis and acid, organic solvents, degreasing agents and electrolytic attack. It is non-toxic, non-staining and easy to produce.

In order to improve some properties of Polypropylene formulations may include additives such as pigments, carbon black, rubbers, antioxidants, and UV stabilizer. Polypropylene can be manufactured to a high degree of purity for use in the semiconductor industry, and its resistance to bacterial growth makes it suitable for medical equipment.

Rockwell Hardness: HRC 51-53

The Gerber 31-002070 Bear Grylls Survival Hatchet with Nylon Sheath has a Rockwell Hardness of HRC 51-53

Stanley P. Rockwell inevnted the Rockwell Hardness Test in 1919 while working as a metallurgist in ball bearing plant. Rockwell wanted to measure the uniformity and hardness of inner and outer rings on which the ball bearings rolled. He designed a device that could measure hardness accurately and quickly.

The American Society for Testing and Materials (ASTM) standardized a set of scales for testing Rockwell hardness values. Each scale has been designated a letter and corresponds to a different group of materials. Scale C is used for steel, titanium, deep case hardened steel, hard cast irons and other materials harder than scale B 100.

Knife blades and other steel hardened tools are made from metals that match to the Rockwell C scale. Most blade makers display the hardness number as "HRC xx" or "HRC xx - xx" providing a range, where "xx" indicates a Rockwell hardness number. Not many blades measure over HRC 70. Most functional blades rate somewhere between HRC 56 and HRC 63.

Generally, blades with a lower HRC number don't hold and edge for long under demanding use, but they are easier to sharpen. Blades with a higher HRC value stay sharp for longer, but are more difficult to sharpen. As an example, stainless steel has a HRC higher than carbon steel, but it is also more difficult to sharpen than carbon steel.

Company Information: Gerber

Gerber Legendary Blades, Inc. has been in business since 1939. The Oregon based company specializes in making durable and affordable knives along with an extensive collection of multitools for the average consumer. Gerber is the first knife production company to employee a custom made knife artisan to design some of their most popular and enduring products. Over the years, they have become one of the leading companies offering multitool products to the average consumer.

Gerber knives come in varying models and designs, and anyone can find the tool they need for every occasion. The company takes customer satisfaction seriously, receiving feedback from soldiers, marines, and airmen when redesigning popular items. The boot knife, called Gerber Guardian, was created over two decades ago, and is still one of the most popular designs that they sell. They have knives made specifically for outdoors survival, designed to withstand the toughest outdoor conditions you could possibly place it through, and a line of fighting knives that are internationally recognized as the best among tactical, hand to hand, weaponry. Their designs include ergonomic handles made from thermoplastic and single blade, lock back knives.

Of course, the cornerstone of the Gerber company is their line of multitools. These tools are revered as the best ever produced, and have been designed to take the daily abuse of a hard working man. The multitools are made with the newest technology and finest materials available. They are lightweight, so that it is not a burden to carry them on your person for extended periods of time. They are nearly indestructible, chopping, cutting, and doing exactly what you need them to accomplish each time you unfold one of them open. The industrial line multitools were made with the average consumer in mind, highly functional and made to last a lifetime.

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