The Best CPM-M4 Steel Knives | buyers Guide

If you're in the market for a high-performance knife that can take a beating and keep on cutting, you've probably heard about CPM-M4 steel. This guide will walk you through some of the best knives featuring this exceptional blade material, helping you make an informed decision for your next purchase.

Why Choose CPM-M4?

Before we dive into specific knives, let's quickly recap why CPM-M4 is such a coveted steel:

1. Exceptional edge retention

2. High wear resistance

3. Good toughness for a high-hardness steel

4. Takes a razor-sharp edge

Let’s talk about why CPM-M4 steel is such a big deal in the knife world. Think of it like having a blade that stays razor-sharp through weeks of heavy use, while being tough enough to handle whatever you throw at it. Whether you’re breaking down endless cardboard boxes, cutting rope, or tackling tough materials, M4 just keeps going when other steels would have given up and dulled out.

Sure, you’ll need to keep it dry and maybe give it a quick wipe down now and then - it’s not as rust-resistant as some steels. But here’s the thing: what you get in return is absolutely worth it. Imagine spending less time sharpening and more time actually using your knife. That’s what M4 brings to the table. It’s like upgrading from a regular car to a high-performance machine - there might be a bit more maintenance involved, but the performance makes you forget all about it.

The best part? Once you’ve used a knife with M4 steel, it’s hard to go back to regular steels. That edge just keeps cutting, day after day, without fussing with constant touch-ups. For anyone who uses their knife regularly, whether for work or everyday tasks, M4 isn’t just another fancy steel - it’s a genuine upgrade that you’ll notice every time you pull out your knife.

Our Favorite Knives With CPM-M4 Steel

1. Benchmade 940 osborne cPM-M4 + G10

Pros

• Incredibly slim and lightweight for a full-size knife

• Rock-solid AXIS lock that’s truly ambidextrous

• Reverse tanto tip provides exceptional strength

• Perfect pocket clip tension and placement

• Disappears in pocket despite 3.4” blade length

Cons

• Premium price point that’s tough to justify for some

• Thin handle can feel lacking during heavy cutting tasks

• Thumb studs occasionally snag on pocket material

The Benchmade 940 represents something special in the knife community - a design that's truly stood the test of time. When Warren Osborne collaborated with Benchmade back in 2000 to create this distinctive reverse tanto folder, nobody could have predicted its lasting impact on the EDC world. The 940's sleek profile and versatile design quickly earned it a dedicated following among knife enthusiasts and everyday users alike.

Fast forward to Blade HQ's exclusive variant, which emerged from countless conversations with knife enthusiasts and years of observing how people were modifying their 940s. They made the bold choice to pair CPM-M4 steel with jade G-10 scales - a first for the 940 platform. It wasn't about creating just another limited edition; it was about developing a version that hardcore users had been asking for.

After carrying this particular configuration daily for over a year now, I've gained a deep appreciation for how thoughtfully this variant was executed. The M4 steel has proven itself remarkably capable at holding an edge through heavy use, while the jade G-10 handles have developed a unique character that tells the story of every task this knife has tackled. There's something genuinely special about how a knife becomes an extension of your daily life, and this 940 variant exemplifies that connection perfectly.

2. Benchmade Mini Freek CPM-M4 + G10

The Benchmade Mini Freek with CPM-M4 steel is a compact powerhouse that proves good things come in small packages. Born from the success of its larger sibling, this 3-inch blade variant packs all the punch of the full-size Freek in a more pocket-friendly format. The textured G10 scales with those eye-catching red liners give it a tactical yet refined appearance, while the M4 super steel blade, running at a robust 62-64 HRC, means business when it comes to edge retention and toughness. What really makes this knife special is how it disappears in your pocket at just 2.89 ounces, yet feels like a much larger knife when you put it to work. Whether you’re breaking down boxes, doing detailed cutting tasks, or just need a reliable EDC companion, the Mini Freek delivers performance that punches well above its weight class.

Quick Take

Pros

• Exceptional ergonomics despite compact size

• Premium M4 steel offers outstanding edge retention

• Perfect EDC weight at just 2.89 ounces

• Textured G10 scales provide excellent grip

• Smooth AXIS lock operation for easy deployment

Cons

• Higher price point for the premium materials

• M4 steel requires more maintenance to prevent rust

• Three-finger grip might be small for larger hands.

3. Benchmade Auto-Immunity

The Benchmade Auto Immunity family represents a fascinating evolution in EDC knife design, specifically crafted to navigate various knife laws while delivering premium performance. The standard Auto Immunity rocks a 2.5-inch CPM-M4 blade, while its California-legal sibling, the Partial Auto Immunity, comes in with a 1.9-inch blade. Both versions feature the same sleek aluminum handles and Benchmade’s reliable Auto AXIS lock mechanism. What makes these knives particularly interesting is their purpose-built design - they’re not just smaller versions of existing models, but rather purpose-engineered tools meant to be “immune” to most knife restrictions while maintaining serious cutting capability. The M4 super steel blade, coated in black Cerakote, gives you exceptional edge retention and toughness, while the Wharncliffe profile provides precise control for detailed cuts.

Quick Take

Pros

• Premium CPM-M4 steel with excellent edge retention

• Smooth, reliable Auto AXIS lock mechanism

• Ultra-compact and lightweight design

• Double safety features prevent accidental deployment

• Lifetime LifeSharp service included

Cons

• Premium price point that’s hard to justify for some

• M4 steel requires regular maintenance to prevent corrosion

• Small handle size may not suit larger hands

4. Benchmade Bailout CPM-M4 + Aluminum

The Benchmade Bailout in M4 with blue aluminum scales represents a thoughtful evolution of the modern tactical folder. While the original Bailout made waves with its lightweight design, this variant takes things to another level by combining premium CPM-M4 steel with aerospace-grade aluminum handles. At its core, this is still very much a purpose-built tool, but one that’s been refined for serious everyday carry.

The decision to use M4 steel wasn’t just about chasing premium materials - it fundamentally changes how this knife performs in daily use. The 3.38” tanto blade holds an edge through serious abuse, while the aluminum scales add a level of rigidity and durability that transforms the handling characteristics. At 2.7 ounces, it maintains the lightweight ethos of the original design while offering notably improved durability.

Quick Take

Pros

• Exceptional strength-to-weight ratio at 2.7 ounces

• CPM-M4 steel provides superior edge retention and toughness

• Precision-ground tanto tip excels at detailed work

• Aluminum scales offer improved rigidity over base model

• Refined ergonomics suitable for extended use

Cons

• Higher price point reflects premium materials

• Tanto geometry requires specific sharpening technique

• Aluminum construction can transfer temperature readily

Caring for Your CPM-M4 Knife

Remember, CPM-M4 isn't stainless steel. To keep your knife in top condition:

1. Wipe the blade dry after use, especially in humid environments.

2. Apply a thin coat of mineral oil if storing for extended periods.

3. Use a forced patina if you want extra corrosion resistance.

Conclusion

CPM-M4 is a steel that rewards those willing to put in a little extra care with exceptional performance. Whether you're looking for a hard-use folder, a premium everyday carry, or a collector's piece, there's a CPM-M4 knife out there for you.

When choosing, consider your specific needs. Do you prioritize edge retention above all else? Or do you need a balance of toughness and cutting ability? Your intended use will guide you to the perfect CPM-M4 knife for your needs.

Remember, the best knife is the one you'll carry and use. Happy hunting, and may your edges stay sharp!

Citations: [1] https://www.nothingbutknives.com/benchmade-weekender-review/ [2] https://knifesteelnerds.com/2021/10/19/knife-steels-rated-by-a-metallurgist-toughness-edge-retention-and-corrosion-resistance/ [3] https://forum.spyderco.com/viewtopic.php?t=59424 [4] https://www.hudsontoolsteel.com/technical-data/steelC4 [5] https://nobliecustomknives.com/best-knife-steel/ [6] https://knifeinformer.com/discovering-the-best-knife-steel/ [7] https://www.bladescanada.com/Steel-Guide-and-Glossary [8] https://nobliecustomknives.com/m390-steel/

The Ultimate Guide to CPM S35VN Steel

Choosing the right steel for your knife is crucial for performance and durability. In this guide, we'll explore CPM S35VN, a popular choice among knife enthusiasts.

What is CPM S35VN Steel?

CPM S35VN is a high-end stainless steel known for its balance of toughness, edge retention, and corrosion resistance. It was developed by Crucible Industries as an improvement over the popular CPM S30V steel[2].

History and Development

Introduced in 2009, CPM S35VN was designed to offer better machinability and toughness than its predecessor, CPM S30V. The addition of niobium enhances its toughness without sacrificing edge retention[2].

Key Properties of CPM S35VN Steel

Hardness and Edge Retention

CPM S35VN typically achieves a Rockwell hardness of 58-61, providing excellent edge retention while remaining relatively easy to sharpen[4].

Toughness and Durability

This steel is known for its superior toughness, making it resistant to chipping and breaking under stress[1][3].

Corrosion Resistance

With a high chromium content, CPM S35VN offers excellent corrosion resistance, ideal for outdoor use and kitchen knives[3][4].

Ease of Sharpening

Compared to other high-end steels, CPM S35VN is easier to sharpen while maintaining a sharp edge longer than many alternatives[2].

Pros and Cons of CPM S35VN Steel

Pros Cons Excellent edge retention Higher cost Superior toughness Requires proper heat treatment Good corrosion resistance Slightly less hard than some super steels

Best Uses for CPM S35VN Steel

CPM S35VN is versatile, making it suitable for high-end pocket knives, kitchen cutlery, and outdoor survival tools[1][2].

How CPM S35VN Compares to Other Steels

Compared to VG-10, CPM S35VN offers better edge retention and toughness but at a higher cost. It also surpasses 440C in corrosion resistance and overall performance[3][4].

Heat Treatment of CPM S35VN Steel

Proper heat treatment is essential to maximize the properties of CPM S35VN. It involves precise temperature control and often includes cryogenic treatment to enhance hardness and toughness[1].

Caring for Knives Made with CPM S35VN Steel

To maintain your knife's performance, regularly clean and dry the blade after use. Occasional sharpening with quality stones will keep the edge in top condition[2].

Popular Knives Featuring CPM S35VN Steel

• Zero Tolerance 0452CF: Known for its sleek design and robust performance.

• Buck 841 Sprint Pro: Offers excellent balance between durability and sharpness.

Conclusion

CPM S35VN steel is an exceptional choice for those seeking a reliable, high-performance knife. Its balance of edge retention, toughness, and corrosion resistance makes it a favorite among knife enthusiasts.

FAQs About CPM S35VN Steel

1. Is CPM S35VN better than CPM S30V?

   • Yes, it offers improved toughness and machinability.

2. How does it compare in price?

   • It is generally more expensive due to its enhanced properties.

3. Is it suitable for beginners?

   • While it's easy to maintain, the cost may be prohibitive for beginners.

This guide provides an in-depth look at CPM S35VN steel, helping you understand why it's a top choice in the knife industry.

Sources [1] Knife Steels Rated by a Metallurgist - Toughness, Edge Retention ... https://knifesteelnerds.com/2021/10/19/knife-steels-rated-by-a-metallurgist-toughness-edge-retention-and-corrosion-resistance/ [2] Knife Steel Chart: Types, Properties, and Choosing the Best Knife ... https://nobliecustomknives.com/best-knife-steel/ [3] Knife Guide: A Brief List of Steels and What They Are https://www.nothingbutknives.com/knife-guide-a-brief-list-of-steels-and-what-they-are/ [4] Knife Blade Steel Guide: Composition - Comparison Chart https://morethanjustsurviving.com/knife-blade-steels/ [5] knife steel guide for the average line cook of ... - Kitchen Knife Forums https://www.kitchenknifeforums.com/threads/knife-steel-guide-for-the-average-line-cook-of-below-average-intelligence.61584/ [6] Knife Blog https://nobliecustomknives.com/knife-blog/ [7] Knife Collecting: A Comprehensive Guide https://nobliecustomknives.com/knife-collecting-a-comprehensive-guide/ [8] 40 Best Knife Blogs and Websites in 2024 https://blogs.feedspot.com/knife_blogs/

Benchmade Taggedout OD Green G10 + S45VN Review | The Bugout meets Crooked River

Optimized for everyday carry, Specialized for the hunt.

It’s hard to imagine what the EDC world would look like today without the people at Benchmade and their iconic knife designs. They have pioneered many of the most ground-breaking pocket knife innovations for decades, like the Bugout, which defined what a lightweight modern pocket knife should be.

And the Crooked River, which is still a perennial best-seller, and has been touted as one of, if not the best folding hunting knife available on the market today.

Fuse these two iconic designs together and you get the all-new Benchmade Taggedout, which combines the best features of both of these two incredible knives into one lightweight, rugged package.

The purpose of this review is to highlight the all-new Benchmade Taggedout. This is a new variation of the Taggedout which was originally released in 2022. This new variant improves upon a very promising design, which turned a lot of heads last year.

Let’s talk about it:

Benchmade Taggedout Pocket Knife Specs:

• Blade Length: 3.5"

• Blade Thickness: 0.09"

• Blade Style: Clip-Point

• Blade Finish: Satin

• Edge Angle: 17 Degrees per side (34 inclusive)

• Overall Length: 7.46"

• Open Length: 8.13”

• Closed Length: 4.63"

• Handle Thickness: 0.49”

• Mini Deep Carry Pocket Clip

• Opener: Thumb-stud

Materials:

• Blade: CPM-S45VN stainless steel

• Handle Scales: Contoured OD Green G10

• Orange Anodized Aluminum Back-spacer and thumb-stud

• Black Oxide coated steel pocket clip

  Design and Build Quality

  Benchmade is known for the incredible build quality and attention to detail that they put into their products. They have set the standard in the knife industry for what it means to make a high-quality, premium pocket knife.

  The Taggedout is no exception, the build quality on this knife is really good. The sample that I got had perfect centering out of the box, and a crazy hair-popping sharp edge. What more could you ask for right?

  This new variation features all-new blade steel which is a tremendous upgrade to what the original CPM 154 Taggedout launched with.

  The improved steel is a very welcomed change on this year's update because the new S45VN steel better matches what the Taggedout was intended for.

  S45VN steel offers much higher edge retention than CPM 154, greater amounts of toughness, and better corrosion resistance. All of which lend themselves well to skinning, gutting animals, and de-boning meat.

  The improved toughness of the steel is what I really appreciate about this upgrade, because of how fine the point is on this knife, it is very prone to breaking with hard use.

  And just because the Taggedout is part of Benchmade’s Hunting product line, don’t assume it has no cross-over to the everyday carry world.

  This knife perfectly blends the cutting performance of the Crooked River, with the carry-ability of the Bugout.

  The Taggedout is a dream come true if you always wanted a slightly bigger Bugout with a better blade-steel.

  Also new to this year's release is the switch from using a thumb-hole opener to a classic Benchmade thumb stud. This is an update that many of us were asking for when the original Taggedout launched.

  Don’t get me wrong, a thumb hole can be really useful, and fun to use. But the addition of the new thumb stud makes this knife so much better in my opinion.

  Another update from the original Taggedout is the change from using barrel spacers, to a larger more utilitarian aluminum back spacer. This not only looks better aesthetically but also integrates a lanyard hole for those of us who like to use lanyards on our knives.

The Benchmade Taggedout is a knife that is exceptional in terms of cutting performance. Its thin blade and sharp point are designed for precise cutting, allowing for a seamless experience.

The blade's 17-degree cutting edge angle is perfect for maintaining sharpness and durability, even under prolonged use. This makes it a great choice for everyday carry, hunting, and other outdoor activities.

The Taggedout's ergonomic design is an improvement over the Bugout model. The knife is better suited for larger hands, making it easier to grip and use, which is important for anyone using a knife for extended periods of time.

For everyday carry, the Taggedout is an excellent choice due to its lightweight design and deep carry pocket clip. It can be easily carried around wherever you go without weighing you down, making it a reliable and versatile knife to have with you at all times.

When it comes to hunting, the Taggedout performs exceptionally well due to its optimized blade design. It is perfect for skinning, gutting, and deboning meat, making it a must-have for avid hunters.

Overall, the Benchmade Taggedout is a knife that delivers exceptional cutting performance. Its thin blade with a sharp point, 17-degree cutting edge angle, and ergonomic design make it a joy to use, whether you're using it for everyday carry or for hunting. The Taggedout is a worthwhile investment for anyone in need of a reliable and versatile knife.

Conclusion

• The Benchmade Taggedout is a high-quality, premium pocket knife optimized for everyday carry and specialized for hunting.

• The knife features all-new blade steel, which offers higher edge retention, greater amounts of toughness, and better corrosion resistance.

• The Taggedout's ergonomic design is an improvement over the Bugout model, making it easier to grip and use for extended periods of time.

• The knife's specialized blade design is perfect for skinning and gutting animals, and deboning meat, making it a must-have for serious Sportsmen.

• Overall, the Benchmade Taggedout is a reliable and versatile knife that delivers exceptional cutting performance. It is a worthwhile investment for anyone in need of a durable and long-lasting knife.

If you're in the market for a high-quality, premium pocket knife that's optimized for everyday carry and specialized for hunting, then look no further than the Benchmade Taggedout. This knife delivers exceptional cutting performance and is built to last.

If you've already had the chance to use the Benchmade Taggedout, we'd love to hear your thoughts and experiences in the comments below. And if you're interested in purchasing the Taggedout for yourself, be sure to use this link: https://www.benchmade.com/products/15536.

Thanks for reading!

Ultem: A High-Performance Knife Handle Material

is ultem just a trend?

When it comes to choosing a knife handle material, there are many factors to consider. Do you want a material that is strong, lightweight, and heat-resistant? What about chemical resistance and electrical insulation properties? If you're looking for a material that checks all these boxes and more, look no further than Ultem.

The History of Ultem

Ultem was first developed by General Electric in the 1980s as a high-performance thermoplastic material. Since then, it has become a popular choice for a variety of industries due to its strength, heat resistance, and chemical resistance. Today, Ultem is used in everything from aerospace components to medical devices and, of course, knife handles.

In conclusion, Ultem is an excellent choice for knife handle scales due to its high strength, heat resistance, and chemical resistance. While it may be more expensive than some other materials, its high-performance properties make it well worth the investment. So if you're looking for a material that can stand up to the toughest conditions and provide a comfortable grip, consider Ultem for your next knife handle.

Ultem vs. G10 and FRN

When it comes to knife handle materials, Ultem has a lot to offer. Compared to G10, Ultem has similar properties in terms of strength, and durability. However, Ultem is generally more expensive than G10 and has a smoother, less textured surface. While G10 is available in a wider range of colors and patterns, Ultem is typically only available in a few colors. Ultimately, the choice between Ultem and G10 for knife handle scales may come down to personal preference, budget, and availability.

Compared to FRN, Ultem is known for its high strength, heat resistance. While FRN is valued for its lightweight, impact resistance, and affordability. FRN has a more textured surface and is available in a wider range of colors and patterns. However, it is generally not as strong as ultem.

Is Ultem actually useful for knife handle scales?

While chemical and electrical resistance are certainly valuable properties for certain applications, they are generally not as important for knife handles. This is because knife handles are not typically exposed to harsh chemicals or electrical currents. Instead, properties such as weight, texture, and durability are more highly valued for knife handles. A lightweight handle can make the knife easier to maneuver and easier to carry over long periods of time. A non-slip texture can provide a comfortable grip and improve safety. And of course, durability is essential for a knife handle that will see regular use in rugged outdoor environments. While it's always good to have a material that can stand up to a variety of conditions, for knife handles, these other properties are often more critical.

Ease of customization

While G10 and FRN have similar properties to Ultem in terms of strength, durability, and resistance to impact, they have an advantage when it comes to customization. G10 and FRN can be easily dyed in a wide range of colors and patterns, allowing for a greater degree of personalization for the user. In contrast, Ultem is typically only available in a few colors and is more difficult to dye due to its high melting point. While some manufacturers have developed processes to dye Ultem in limited colors such as black, blue, and red, the range of options is much more limited than with G10 and FRN.

How to make Ultem knife scales

There are three primary methods for creating Ultem knife handle scales: 3D printing, milling, and injection molding. Each method has its own pros and cons.

3D Printing

Fused deposition modeling (FDM) is a type of 3D printing that can be used to create Ultem knife handle scales. FDM involves extruding a thermoplastic material through a nozzle to create a three-dimensional object layer by layer. Ultem is often used in FDM 3D printing due to its high strength, heat resistance, and chemical resistance.

One advantage of 3D printing is that it allows for the creation of complex geometries and shapes that may be difficult or impossible to achieve with other methods. Additionally, 3D printing can be a cost-effective option for small-scale production runs.

However, 3D printing can also result in parts with a lower strength and durability compared to other methods. In addition, the surface finish of 3D-printed parts may not be as smooth as those created with other methods.

Milling

Milling is another method that can be used to create Ultem knife handle scales. However, it can be difficult to mill Ultem with a CNC machine due to its high melting point and low thermal conductivity. The heat generated during the milling process can cause the material to soften and melt, which can lead to issues with the surface finish and dimensional accuracy of the finished part.

To successfully mill Ultem, it is recommended to use a high-quality carbide end mill with a sharp cutting edge and a low helix angle. The cutting speed and feed rate should also be carefully controlled to avoid overheating the material. Additionally, using a coolant or air blast can help to dissipate heat and improve chip evacuation.

One advantage of milling is that it can be used to create parts with high accuracy and surface finish. Additionally, milling can be used to create larger production runs than 3D printing.

However, milling can also be a more expensive and time-consuming option compared to 3D printing or injection molding. It requires specialized equipment and expertise, which can drive up the cost.

Injection Molding

Injection molding is a popular method for creating Ultem knife handle scales. Injection molding involves injecting molten plastic into a mold cavity, allowing it to cool and solidify into the desired shape.

One advantage of injection molding is that it can be used to create large production runs of parts with high accuracy and consistency. Additionally, injection molding can produce parts with a high-quality surface finish.

However, injection molding requires specialized equipment and processes, which can make it a more expensive option for small-scale production runs. Additionally, the initial cost of creating a mold can be high.

Overall, each method has its own strengths and weaknesses. When choosing a method for creating Ultem knife handle scales, it is important to consider factors such as production volume, cost, and desired part properties

Popular Knife Brands Using Ultem

There are several knife companies that use Ultem for their knife handles, including Tactile Knife Co, Blade HQ, Microtech, Vero Engineering, Dauntless MFG, and many others. These companies recognize the value of Ultem's high-performance properties and use it to create some of the toughest and most durable knives on the market.

Ultem has become an increasingly popular material in the everyday carry gear collectors community. Boutique makers have utilized Ultem to create collectible tools, beads, and knife scales. One of the unique aspects of Ultem is its amber color, which is rare in the knife industry. This color, combined with its high durability, has made it a favorite among collectors looking for unique and high-quality materials for their gear. As a result, Ultem has become a sought-after material in the knife community, with many collectors and enthusiasts seeking out knives and accessories made from this high-performance thermoplastic.