M4 High Speed Steel /Premium HSS Steel for Cutting Tools

• Customization: Available
• Type: Round Bar
• Standard: AISI, DIN, JIS, GB, BS
• Model NO.: M4/1.3351/hs6-5-4
• Technique: Forged/Hot Rolled/Cold Drawn
• Shape: Flat Bars/Plates/Blocks/Round Bars
• Surface Treatment: Polished, Turned, Peeled, Ground, Black
• Special Use: High Speed Steel
• Application: Tool Steel Bar
• Heat Treatment: Annealed, Quenched, Tempered
• Delivery Time: According to The Inventory Situation
• Product Application: Aluminium Extrusion Die/Pressing Mold etc
• Certificate: ISO
• Price: to Be Confirmed Based on Order Details
• Transport Package: Standard Packaging
• Specification: According to order
• Trademark: ZEICIN
• Origin: China
• Production Capacity: 10000 Ton / Year

Product Description

 

Product Description

M4 High Speed Steel /Premium HSS Steel for Cutting Tools

M4 High Speed Steel is a high-performance, special-purpose tool steel designed for superior wear resistance. With its high vanadium and carbon content, M4 steel provides exceptional resistance to cratering and wear, making it ideal for applications involving cold work punches, die inserts, and high-speed cutting tasks. It is particularly well-suited for cutting materials at high speeds with light cuts. Compared to M2 or M3 steels, M4 offers enhanced wear resistance, making it the perfect choice for working with abrasive materials. This steel is engineered to deliver maximum performance, extending tool life and ensuring reliable, efficient cutting in demanding applications.

 

Similar Grade

ZEICIN Grade	AISI	EN	JIS	British
M4	M4	HS6-5-4	1.3351	-

Main Chemical Composition%

C	Mn	P	S	Si	Cr	Mo	V	Co	W
1.25-1.40	≤0.40	≤0.03	≤0.03	≤0.45	3.80-4.50	4.20-5.00	3.70-4.20	-	5.20-6.00

 

M4 High Speed Steel Heat Treatment Process

1. Forging

   • Temperature: 1093-1149°C

   • Instructions: Do not forge below 926°C. Slow cool after forging.

2. Annealing

   • Temperature: 871°C, hold for 2 hours

   • Cooling: Slow cool (17°C/hour maximum) to 538°C, then air or furnace cool.

   • Resulting Hardness: 225-255 BHN.

3. Stress Relieving

   • Post-Machining: Stress relieve after machining.

   • Temperature: 593-704°C, hold for 2 hours at temperature, then air or furnace cool to room temperature.

   • For Hardened Parts: Temper 17°C below the original tempering temperature.

4. Hardening

   • Preheat: Preheat to 815-844°C and equalize.

   • Second Preheat (for high-temperature hardening in vacuum): 1010-1038°C.

   • Austenitizing (High Heat):

     • Temperature Range: 1024-1219°C

     • Recommended: 1177-1204°C for cutting tools, 1024-1163°C for cold work applications.

5. Quenching

   • Medium: Oil or atmosphere quench to 538-593°C, equalize.

   • Cooling: Then air cool to below 52°C or room temperature.

   • Critical Range: Quench rate through the 1010-704°C range is critical to achieve optimum heat treat response.

6. Tempering

   • Temperature: Minimum of 538°C recommended.

   • Process: Double tempering required. Triple tempering recommended when hardening from 1149°C or higher.

   • Cooling Between Tempers: Air cool to room temperature between tempers.

 

This simplified version provides the heat treatment process for M4 High-Speed Steel, ensuring it reaches the required hardness, toughness, and wear resistance for optimal performance in cutting tools.

Process	Temperature(ºC)	Instructions
Forging	1093-1149°C	Do not forge below 926°C. Slow cool after forging.
Annealing	871°C, hold for 2 hours	Slow cool to 538°C, then air or furnace cool.
Stress Relieving	593-704°C, hold for 2 hours	Air or furnace cool to room temperature.
Hardening	Preheat to 815-844°C	Equalize, second preheat at 1010-1038°C for vacuum hardening.
Austenitizing	1024-1219°C	1177-1204°C for cutting tools, 1024-1163°C for cold work.
Quenching	Quench to 538-593°C	Air cool to below 52°C or room temperature.
Tempering	Minimum 538°C	Double tempering required, triple tempering for higher hardening.

 

 

 

Our Advantages

 

1. Excellent Cost-Performance Ratio

Reliable Cutting Power at a Competitive Price

M4 High-Speed Steel offers an exceptional balance of wear resistance, toughness, and heat resistance, making it an ideal choice for tool manufacturing. It provides consistent performance for cutting tools, punches, and dies, making it perfect for users who need high efficiency without the premium cost of cobalt-alloyed or ultra-high-performance HSS grades.

 

2. Precision Manufacturing Technology

High-Quality Production Process

Our M4 tool steel is produced using advanced manufacturing techniques, ensuring a uniform microstructure and consistent mechanical properties. This steel is suitable for medium to high-speed cutting, cold forming, and general-purpose tool applications, offering superior cutting capabilities in tough conditions.

Optimized Heat Treatment

M4 steel undergoes precise heat treatment processes to achieve excellent dimensional stability, good toughness, and a hardness range of 64-66 HRC after tempering. This ensures reliable wear resistance and performance in demanding applications.

 

3. Stable and Reliable Quality

Strict Quality Control Standards

We implement rigorous quality control procedures at every stage of production, ensuring uniform hardness, fine microstructure, and tight dimensional tolerances in each M4 steel bar. This ensures reliable performance and consistency for precision tooling applications.

Global Standard Compliance

Our M4 High-Speed Steel meets international standards such as ASTM A600 and other relevant industry specifications. It is widely used in automotive parts, cutting tool production, precision punches, and industrial molds.

 

4. Technical Support & Custom Solutions

Tailored to Your Needs

We continually optimize our production process to meet specific customer demands across various industries. Whether you're producing high-precision cutting tools or general-purpose dies, we offer tailored solutions to meet your exact requirements.

Multiple Supply Forms

M4 High-Speed Tool Steel is available in various forms, including:

• Round bars

• Flat bars

• Plates and custom profiles

We also provide custom heat treatments and surface finishes to meet the specific performance requirements of high-speed, precision tooling.

 

Surface condition

Applications

Applications of M4 High Speed Steel Rods

M4 High-Speed Steel is widely recognized for its exceptional wear resistance, toughness, and heat resistance, making it an ideal choice for high-performance cutting tools. It is a preferred material for manufacturing durable, high-performance tools designed to withstand demanding machining conditions, offering superior performance compared to conventional tool steels.

Typical Applications Include:

• Heavy-duty Milling Cutters

• Broaching Tools

• Broach Inserts

• End Mills

• Form Tools

• Taps

• Spade Drills

• Punches

• Dies

• Rolls

M4 High-Speed Steel rods are ideal for producing tools that require a perfect balance of hardness, toughness, and heat resistance, ensuring long tool life and reliable cutting performance under tough conditions.

In addition to M4, we also offer other high-performance steels like AISI T1 Tool Steel, suitable for high-speed cutting and tooling applications.

 

 

Packaging & Shipping

FAQ

Q1: What are the advantages of M4 High Speed Steel over conventional tool steels?
A: M4 High-Speed Steel offers an excellent balance of wear resistance, toughness, and heat resistance, making it ideal for high-performance cutting tools. Compared to conventional tool steels, M4 steel provides superior durability and stability under high-temperature conditions, ensuring longer tool life and consistent cutting performance in demanding environments.

 

Q2: What sizes and forms do you supply for M4 High Speed Steel?
A: We supply M4 High-Speed Steel in various forms, including round bars, flat bars, plates, and custom profiles. Size specifications can be tailored to meet different tooling requirements such as heavy-duty milling cutters, broaching tools, punches, and dies.

 

Q3: Do you offer customized solutions for M4 High Speed Steel?
A: Yes, we provide customized sizing, heat treatment processes, and surface finishes for M4 High-Speed Steel, designed to meet the specific needs of high-speed cutting and tooling applications. Our solutions ensure optimal hardness, toughness, and wear resistance, tailored to your precise manufacturing requirements.

 

Q4: How do you ensure product quality consistency for M4 High Speed Steel?
A: We adhere to strict quality control procedures throughout every stage of production-from raw material selection to heat treatment and final inspection. This ensures that M4 High-Speed Steel consistently meets high-quality standards, with uniform microstructure, precise dimensional tolerances, and reliable performance for high-speed machining and tooling.