High speed steel M35 round bars are well-known for their strength and wear resistance. These bars are a type of tool steel designed for high-performance cutting tools and parts that must withstand extreme temperatures and pressures.
They are made with a mix of elements that improve hardness, toughness, and cutting strength. One of those elements is cobalt. This addition gives M35 Round Bars better heat resistance than many other steels. That’s why they are used in applications that require cutting, drilling, or milling at high speeds.
What is a Tool Steel M35?
M35 is a type of high speed steel, also known as HSS. It belongs to the M series of tool steels. These steels are made for cutting tools that stay sharp at high temperatures. M35 is based on M2 steel but has extra cobalt in it—about 5%.
The main elements in M35 tool steel are:
- Carbon – Gives hardness and strength
- Chromium – Increases wear resistance
- Molybdenum – Improves hardness and strength under heat
- Vanadium – Boosts toughness and wear resistance
- Tungsten – Helps hold hardness at high temperatures
- Cobalt (5%) – Raises red hardness (how well it holds hardness when hot)
Due to this composition, M35 round bars can handle high-speed operations without losing shape or cutting power. These bars are created through precise forging and heat treatment. This process helps to balance hardness and toughness, ensuring that the material does not break under pressure. M35 round bars, once processed, can be ground to sharp edges to make precision cutting tools.
Why Choose M35 Tool Steel?
M35 tool steel offers several advantages over other materials in this category. It maintains performance under high temperatures, pressures, and wear, making it suitable for a wide range of industries. Here are some of the primary reasons M35 is preferred.
- High Heat Resistance
M35 keeps its hardness at higher temperatures than many other high speed steels. This is called “red hardness.” When cutting or drilling at high speed, tools heat up fast. If the steel loses its hardness, it won’t cut well. M35 stays hard and sharp even when the tool gets hot. - Longer Tool Life
Because of its hardness and cobalt content, M35 lasts longer than other steels such as M2. It does not wear out quickly. This ensures fewer tool changes and lower long-term costs. - High cutting performance.
M35 is used to make tools that cut through tough materials such as stainless steel or titanium. It makes clean, smooth cuts. M35 is a reliable option for drilling deep holes and shaping hard metal. - Strong and Tough
While some hard materials can be brittle, M35 ensures a good balance. It is strong to resist bending or cracking under heavy load. That makes it safe where tools are pushed to their limits. - Suitable for Complex Shapes
M35 round bars can be ground and shaped into custom designs. This makes them useful for custom-made tools. Whether the need is for a special drill bit, cutter, or tap, M35 can be shaped to fit. - Corrosion Resistance
M35 does have some resistance to rust due to chromium in the mix. This gives it more durability in damp or oily work environments.
Common Uses of M35 Round Bars
M35 round bars are commonly utilized in industries that involve metal cutting, shaping, and drilling. Some common applications are:
- Drill Bits: For cutting through hard materials.
- End Mills: Used in CNC and milling machines.
- Taps and Dies – Used to thread metal parts.
- Cutting Blades: Used in industrial saws and shaping tools.
- Broaches – For the precise shaping of holes
- Gear Cutters – Used to form gear teeth.
- Tool Inserts: Replaceable tips for cutting tools.
- Punches and Dies – Used for stamping or forming operations.
They are also used in tool rooms, machine shops, automotive manufacturing, aerospace, oil and gas, and construction equipment industries
Final Thoughts
M35 round bars offer a strong hardness, toughness, and heat resistance in tough environments. Their ability to hold up under heat and pressure makes them ideal for tools that must perform at high speed and under load.
If your work involves cutting or shaping hard metals, M35 is a reliable choice. It gives long tool life, clean performance, and good value over time. That’s why industries use it to make tools that last and perform.
M35 round bars are built for performance, made to last, and ready for tough jobs.
