Cold Steel Trench Hawk Axe 90PTH

 

Cold Steel Trench Hawk Axe 90PTH Video


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Blade Type Information: 5150 Carbon Steel

5150 carbon steel is a durable and a high-purity alloy that imparts extreme strength to any tool. Unlike most steels which contain high levels of impurities such as phosphorus, silicon and silver, 5150 carbon steel is primarily composed of carbon and iron. While all types of steel contain impurities known collectively as "slag," carbon steel manufacturers are required to keep impurity levels down to a predefined maximum. Manufacturers are also required to ensure that carbon makes up at least 0.12% of the alloy, with an upper limit of 2%.

5150 carbon steel falls in the middle of that range, yielding particularly hard steel. The process known as "drop forging" is essential in attaining this hardness. Other methods such as press forging and roll forging are not suited to weapon-grade carbon steel. For this reason, most knife and tactical tomahawk manufacturers form their blades via drop forging and may also indicate as much on the blade itself. The process involves mechanically hammering the red-hot carbon steel between two dies, or molds. In this way, the manufacturer removes more slag from the hot metal than if they had simply used a machine to cut away at the block of iron until they achieved the desired shape. Additionally, when the iron is hammered, the crystalline pattern within the steel aligns more readily than in other methods, creating a harder finished product.

5150 carbon steel is ideal for knives and other throwing weapons because it provides greater durability in areas of the blade with thick cross-sections. Unlike carbon steel, a lower-grade steel can shatter if it impacts a similarly hard surface when thrown. Additionally, high-carbon steels provide greater flexibility than types of steel with more slag, and although this feature may not be readily apparent to human hands, it can have a huge impact on performance.

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 50-55

The Cold Steel Trench Hawk Axe 90PTH has a Rockwell Hardness of HRC 50-55

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: Cold Steel

The history of the California-based company Cold Steel dates back to 1980. Now known as Cold Steel, Incorporated, the company made a name for itself by focusing on the newest innovations in the field. It was one of the first companies that used tanto point blades in its production line, and those blades are now an industry standard. Cold Steel also introduced customers to Kraton handles, which fit better and more comfortably in the hand. These innovations and others helped the company grow from a small American company to one that sells products around the world.

Cold Steel has its headquarters in Venture, California, and while it has a showroom that is open to the public, it also sells its products through authorized dealers and retailers. Lynn C. Thompson, who founded the company, now serves as its President, while Ron Balicki and Robert Vaughn hold key roles in the corporation. Many people know the company because it is one of the few weapons manufacturers that still create products in the United States. Customers can also find products made in Japan, China, South Africa and Taiwan.

Products from Cold Steel include folding knives, walking sticks, blowguns, swords, knives, tomahawks and machetes. The tanto, which is a knife that slips inside an included sheath, existed long before the company began making the knives, but many believe that if it weren't for Cold Steel, American shoppers couldn't find those products today. Cold Steel is also responsible for a large number of martial arts products sold in the United States.

Cold Steel also has a special projects division that sells weaponry and products unrelated to its main line, and it runs the American Tomahawk Company, which creates many of the tomahawks sold in the country. Military personnel use some of the knives and weaponry created by the company, and those at home can purchase the same products.

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