What are Dive Knives Made of


Many divers carry a knife as a necessary tool in case they find themselves engaged in fishing lines, kelp, or seaweed. Some of them keep a knife so that they can be safe from danger. They also use these knives more on the land than underwater. 


Besides, you’ll find some common uses of dive knives, such as tightening or loosening screws and opening oyster shells. That’s why knowing the construction materials of dive knives is essential before purchasing the best dive knife for you


What are Dive Knives Made of


If you’re looking to purchase a dive knife, it’s essential to know the elements it is made of. So, let’s look at the factors you need to consider to find the best one.  




The longevity and performance of a dive knife rely on the construction material that is used to forge the blade. A dive knife is usually made of either titanium or steel. 


Titanium knives are lightweight but strong. They weigh almost twice compared to steel dive knives. They are also corrosion-resistant, so you don’t need frequent maintenance. 


On the other hand, steel dive knives come in two different alloys. The 300 alloy comes with higher corrosion resistance but requires more sharpening, whereas the 400 alloy holds its edge better. 


Blade and Grip


A dive knife with a medium-length blade is enough for recreational divers. The blade and grip of your knife should be almost equal in length. For example, your 4 to 5-inch knife blade should come with a 4 to 5-inch handle or grip. 


When it comes to choosing a dive knife, you’ll find two types of knife blades. One is serrated, and another is straight. You can fold the serrated blades, but not the straight ones. 


A serrated blade is like a bread knife, which is suitable for cutting through a variety of things, such as rope, fish bones, and other tough materials. It needs less sharpening and stays sharp for longer than a straight blade. 


On the contrary, using a straight blade is also useful because it has a blade that runs through the handle without folding mechanisms. It’s always ready to use, so this knife is ideal for survival situations. 


Blade Tips


Typically, blade tips come in two types: blunt and pointed. Blunt tips are probably the better choice for occasional divers because they can use the tips as screwdrivers. But, pointed tips might be the better option if you’re willing to fish because the tips can help you hit your targets more. 




A sheath is essential because it prevents the knife blade from coming out unexpectedly when not in use. If you use a folding dive knife, it may come with clips instead of a sheath. 




Before you go to the dive, check the knife, whether it is corrosion-resistant or not. If you find that your dive knife has some rust, you need to clean it with a clean cloth, a towel, or some soft steel wool. You should also inspect the locking mechanism on your knife. You can lubricate your knife with silicone if needed. Finally, make sure that your knife has no salt or sand into the inner parts of it.