Product Description
M2 High Speed Steel (AISI M2 / WNr 1.3343 / HS6-5-2) round bars, rods, and bar stock.
Chemical Composition
| Element | Min Range | Max Range |
| Carbon (C) | 0.80 | 0.90 |
| Tungsten (W) | 5.50 | 6.75 |
| Molybdenum (Mo) | 4.50 | 5.50 |
| Chromium (Cr) | 3.80 | 4.50 |
| Vanadium (V) | 1.75 | 2.20 |
| Silicon (Si) | 0.20 | 0.45 |
| Manganese (Mn) | 0.15 | 0.40 |
| Phosphorus (P) | - | 0.030 |
| Sulfur (S) | - | 0.030 |
Rod & Round Bar Supply Specifications
| Parameter | Standard Range / Condition |
| Diameter Range (Hot Rolled) | 10 mm to 130 mm |
| Diameter Range (Forged) | 80 mm to 450 mm |
| Diameter Range (Cold Drawn / Ground Rods) | 2 mm to 30 mm |
| Standard Lengths | 2000 mm to 6000 mm or custom cut-to-length |
| Surface Finish Conditions | Black Surface, Turned, Peeled, Centerless Ground, Bright Polished |
| Dimensional Tolerances | ISO h8, h9, h11, DIN 175 |
| Delivery Hardness (Annealed) | Max 255 HB / 26 HRC |
Physical & Mechanical Properties
| Property | Value | Unit |
| Density | 8.16 | g/cm |
| Modulus of Elasticity | 218 | GPa |
| Thermal Conductivity (20C) | 24.2 | W/mK |
| Thermal Expansion Coefficient (20-100C) | 11.5 x 10 | /K |
| Achievable Hardened Hardness | 63 - 65 | HRC |
| Yield Strength (Hardened & Tempered) | 2200 | MPa |
Heat Treatment Processing
| Process | Temperature Range (C) | Cooling Medium / Strategy |
| Soft Annealing | 850 - 900 | Slow furnace cool (10C per hour to 600C, then air cool) |
| Stress Relieving | 650 - 700 | Slow furnace cool |
| Preheating | 820 - 850 | Equalize thoroughly before hardening |
| Hardening (Austenitizing) | 1200 - 1230 | Oil, Salt Bath (550C), or Vacuum / Gas Quench |
| Tempering | 540 - 560 | Minimum 3 cycles (1 to 2 hours per cycle), air cool to room temp |
International Standard Equivalents
| Country / Standard System | Standard Designation | Material Number / Grade |
| USA (AISI / ASTM) | AISI M2 / ASTM A600 | T11302 |
| Germany (DIN / WNr) | DIN 17350 | 1.3343 / S 6-5-2 |
| European Union (EN ISO) | EN ISO 4957 | HS6-5-2 |
| Japan (JIS) | JIS G4403 | SKH51 |
| China (GB) | GB/T 9943 | W6Mo5Cr4V2 |
| Russia (GOST) | GOST 19265 | R6M5 |
| France (AFNOR) | NF A35-590 | Z85WDCV06-05-04-02 |
Key Applications for M2 Round Bars & Rods
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Standard Cutting Tools: Twist drills, taps, reamers, milling cutters, gear hobs, and broaches.
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Cold Work Forming Tooling: Cold punching dies, cold headers, extruding dies, and thread rolling dies.
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Sawing & Shearing: Slitting saws, metal cutting saw blades, and industrial shearing knives.
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General Precision Hardware: High-wear pins, guide bushings, and wear strips demanding toughness and wear resistance.
Precision and Quality in Every RodOur M2 HSS rods boast consistent quality with a smooth, polished finish that ensures minimal friction and high resistance to wear. Manufactured using hot rolled or forged techniques, these round bars meet international standards and are tailored to client-specific lengths and requirements.
Versatile Supply and Superior PackagingWe offer M2 rods in multiple forms-including bright, polished, and peeled finishes-to suit diverse applications. Each bar is carefully packaged, whether bundled, in wooden boxes, or wrapped in plastic, for safe and secure delivery to customers nationwide.
Engineered for Industrial PerformanceM2 HSS rods deliver moderate corrosion resistance, excellent machinability in the annealed condition, and top-tier tool performance after hardening. These properties make them the preferred choice for high-stress metal cutting and industrial tool-making applications.
FAQ's of M2 High Speed Steel M-2 HSS Rods M2 Round M2 Bars:
Q: How are M2 High Speed Steel rods manufactured to ensure quality and durability?
A: M2 HSS rods are produced via hot rolling or forging, followed by precision heat treatment to achieve a hardness of 62-64 HRC. Strict adherence to ASTM, DIN, and JIS standards ensures each rod offers consistent quality, durability, and high performance for industrial use.
Q: What applications are M2 HSS rods best suited for?
A: These rods are ideal for manufacturing industrial cutting tools such as drills, reamers, end mills, and dies. Their high hardness, wear resistance, and machinability make them especially valuable in tool and die works and metal cutting industries.
Q: When should you choose annealed versus hardened supply condition?
A: Annealed rods are preferred for applications requiring easier machining and shaping, while hardened rods are selected when maximum wear resistance and strength are critical, such as in finished cutting tools and dies.
Q: Where are M2 HSS rods commonly supplied and used in India?
A: These rods are widely supplied across India to tool manufacturers, metalworking units, and engineering workshops. They are available through dealers, exporters, fabricators, producers, and retailers throughout the country.
Q: What is the process for custom sizing and packaging options?
A: Customers can specify required diameters (4mm to 100mm) and custom lengths, with processing options such as annealed or heat treated. Packaging is tailored to client needs, offering bundling, wooden boxes, or plastic wrapping for safe transport.
Q: How does the finish and tolerance affect the rod's performance?
A: A bright or polished finish reduces surface friction and aids in easier tool movement or machining. Tight tolerance (h9 or custom specified) ensures precise fit and reliability in demanding applications.
Q: What are the primary benefits of choosing M2 HSS rods for tool and die works?
A: M2 HSS rods offer high wear resistance, good machinability (in annealed condition), and reliable hardness after treatment, resulting in longer tool life and consistent performance in heavy-duty industrial operations.