Engineering High Speed Tool Steel

Sizes

Introduction

M-Series VS T-Series

M-Series

Product Introduction

High-speed steel (HSS) is a high-alloy tool steel specifically engineered to maintain its hardness and cutting capability at high temperatures (up to 500-600°C), a property known as “red-hardness.” This makes it indispensable in high-productivity manufacturing processes where friction generates intense heat.

IBC Group supplies a wide array of HSS grades that serve as the critical material for cutting tools, drill bits, taps, end mills, saw blades, and other components that require exceptional wear resistance and durability under continuous operation.

Technique: Forged/Hot Rolled/Cold Drawn

Shape: Flat Bars/Plates/Blocks/Round Bars

Surface Treatment: Black/Milled/Machined

Special Use: Structural Steel Bar, Tool Steel Bar, Architecture

Transport Package: Seaworthy Packing/Wooden Box or at Client’s Require

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M-Series VS T-Series High Speed Steel

Understanding the key differences between Molybdenum-based (M-Series) and Tungsten-based (T-Series) high-speed steel is crucial for selecting the optimal material for your application. As a trusted supplier, IBC Group provides expert guidance and both product lines to meet your specific needs. For most cutting tools like drills, end mills, and taps, M-Series HSS (e.g., M2, M35, M42) provides the best balance of performance, manufacturability, and cost.

Primary Alloying Element

M-Series HSS uses Molybdenum (Mo) as its main alloying element.
T-Series HSS relies on Tungsten (W) as its primary element.

Cost and Availability

M-Series is generally more cost-effective. Molybdenum is less dense and often more economical than tungsten, making M-series the preferred choice for most applications.
T-Series is typically more expensive due to its higher tungsten content and density.

Grindability and Machinability

M-Series offers superior grindability. Grades like M2 are easier to shape and sharpen, reducing manufacturing time and cost.
T-Series is more challenging to grind. This can increase production time and require more specialized equipment.

Decarburization Resistance

M-Series is more susceptible to surface decarburization during heat treatment. This requires careful control in furnace atmospheres.
T-Series has excellent inherent resistance to decarburization. This makes it suitable for tools that undergo minimal finishing after heat treatment.

M-Series (Molybdenum-Type HSS)

This is the most common and cost-effective category. Molybdenum is the primary alloying element, providing strong carbide formation.

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M2 (AISI/SAE)

The industry workhorse. Offers an excellent balance of wear resistance, toughness, and cost. Ideal for a vast range of tools: drills, taps, reamers, end mills, and saw blades.

M35 (Co5)

Similar to M2 but with an addition of 5% Cobalt. Cobalt increases red-hardness and hot hardness, making it suitable for machining abrasive materials and harder steels.

M42 (Super HSS)

Contains ~8% Cobalt. This is a premium grade offering the highest level of red-hardness and abrasion resistance among molybdenum HSS. Used for the most demanding applications and for cutting difficult materials like titanium and high-temperature alloys.

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Grade	M2, M20, M24, M26, M28, M30, M32, M35, M38, M40, M42, M45, M50 M52, T1, T15, T4, etc.
Technique	Forged/Hot Rolled/Cold Drawn
Certificate	ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Type	Round Bar, Square Bar and Flat Bar
Dimension of Round Bar	Diameter: φ2 ~ φ580mm
Dimension of Flat Bar	Thickness of Flat Bar: 14 ~ 120mm Width of Flat Bar: 100 ~ 810mm
Length	6/12m, or as Per Request
Tolerance	Standard or Customized with high precision.
Trademark	OEM & ODM