M2 (High Speed Steel) — Tool Steel Grade Specification, Properties & Equivalents

M2 High Speed Steel is a workhorse tungsten-molybdenum tool steel renowned for its excellent balance of toughness, hardness, and wear resistance. Widely adopted across Indian manufacturing sectors, M2 High Speed Steel finds critical applications in tooling for metalworking, cutting tools, and high-performance components requiring sustained sharpness and durability. Its superior red hardness and wear characteristics make it a preferred choice over simpler carbon steels and even some other HSS grades for demanding operations. For Indian procurement engineers and fabricators, understanding the specifics of M2 High Speed Steel is crucial for optimizing tool life and achieving cost-effective production. This reference provides a comprehensive overview of M2 High Speed Steel, covering its chemical makeup, mechanical strengths, available forms, processing guidelines, Indian sourcing landscape, and international equivalents, ensuring informed purchasing decisions on MetaleMart.

Chemical Composition of M2 (High Speed Steel)

M2 High Speed Steel Chemistry

Mechanical Properties of M2 (High Speed Steel)

M2 High Speed Steel Mechanical Properties

M2 High Speed Steel Available Forms in India

M2 High Speed Steel Real-world Applications

• High Performance Drill Bits
• Milling Cutters & End Mills
• Taps & Dies for Threading
• Form Tools & Broaches
• Punches & Dies for Cold Forming
• Lathe Cutting Tools
• Chucks & Jaws
• Screw Machine Parts

M2 High Speed Steel Machinability & Weldability

M2 High Speed Steel exhibits excellent machinability when in the annealed condition, but it

M2 High Speed Steel Heat Treatment & Processing

M2 High Speed Steel requires careful heat treatment to achieve its optimal properties. The hardening process typically involves heating M2 High Speed Steel to a temperature between 1200°C and 1250°C. This high austenitizing temperature is crucial for dissolving the carbides and ensuring a fine grain structure upon quenching. The material is then rapidly quenched, usually in an oil or a salt bath, to harden it significantly. Due to its alloy content, M2 High Speed Steel is susceptible to grain growth and decarburization at these elevated temperatures, so precise control of heating and atmosphere is essential. Tempering is a critical step performed after hardening and quenching to reduce brittleness and impart toughness while retaining sufficient hardness. M2 High Speed Steel is typically double-tempered. The first temper is usually carried out at 550°C to 600°C, followed by cooling, and then a second temper at a similar temperature. This double tempering process ensures the relief of quenching stresses and the formation of stable secondary carbides, which contribute to M2 High Speed Steel's excellent wear resistance and hot hardness. Normalizing, while less common for achieving maximum hardness, can be performed at around 850°C to refine the grain structure in the annealed state. Annealing M2 High Speed Steel for softening involves heating to approximately 850°C, holding, and then slow cooling in the furnace, typically at a rate not exceeding 20°C per hour, to achieve a maximum hardness of 248 HBW. Proper heat treatment is paramount for maximizing the performance and lifespan of M2 High Speed Steel tools.

Sourcing M2 High Speed Steel in India

M2 High Speed Steel is a widely available industrial material in India, produced by major steel manufacturers such as SAIL, JSW Steel, and various specialized tool steel producers. For procurement professionals, M2 High Speed Steel is readily accessible in key industrial hubs like Mumbai, Pune, and Chennai, with suppliers often maintaining significant stock levels. Minimum Order Quantities (MOQs) can vary, with smaller quantities available for standard sizes, while larger or specialized forms might require larger commitments. The indicative price band for M2 High Speed Steel in India typically ranges from INR 350 to INR 700 per kilogram, depending on the form, size, quantity, and prevailing market conditions. It is crucial for buyers to specify their requirements clearly, including the desired form (e.g., round bar, flat, drill rod) and any specific tolerances or certifications. Material Test Certificates (MTC) detailing the chemical composition and mechanical properties as per the specified standard are a standard requirement for M2 High Speed Steel procurement in India, ensuring quality and traceability. Buyers should also consider the availability of Mill Test Certificates (MTC) from reputable Indian producers or their authorized distributors when sourcing M2 High Speed Steel.

M2 High Speed Steel International Equivalents

FAQs about M2 (High Speed Steel)