Isis Metals, located in Manila, Philippines, is a reputable manufacturer and supplier of high-quality metal products for various industries. The company is highly reputed for precision engineering and high-performance materials and offers specialty items such as High-Speed Steel (HSS) M2 Bars, which are highly prized for their superior hardness, abrasion resistance, and high-temperature endurance. These M2 bars are used widely in cutting tool production, industrial machinery, and precision engineering applications. Being committed to quality, reliability, and customer satisfaction, Isis Metals has positioned itself as a value-added supplier in the metal industry, guaranteeing high performance and long-term value.
High-Speed Steel M2 Bars consist of 0.85–1.0% Carbon, 4.0–5.0% Molybdenum, 3.75–4.5% Tungsten, 1.0–1.4% Chromium, and 0.3–0.9% Vanadium, with Cobalt and Silicon in trace amounts. This type of composition provides M2 steel with exceptional hardness (up to 65 HRC after heat treatment), excellent wear resistance, and superior toughness at high temperatures. The molybdenum and tungsten content is high, ensuring that the hardness retains its value under heat, while vanadium increases wear resistance. These mechanical properties also make M2 suitable for high-speed cutting and industrial applications demanding strength, wear resistance, and resistance to thermal fatigue and abrasion.
| ASTM A600 | C | Mn | P | S | Si | Cr | V | Mo | W | |||||||
| M2 regular C | 0.78 | 0.88 | 0.15 | 0.40 | 0.03 | 0.03 | 0.20 | 0.45 | 3.75 | 4.50 | 1.75 | 2.20 | 4.50 | 5.50 | 5.50 | 6.75 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | Mo | W | |||||||
| 1.3343 | 0.86 | 0.94 | … | … | … | … | … | 0.45 | 3.80 | 4.50 | 1.70 | 2.10 | 4.70 | 5.20 | 5.90 | 6.70 |
| JIS G4403 | C | Mn | P | S | Si | Cr | V | Mo | W | |||||||
| SKH51 | 0.80 | 0.88 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 1.70 | 2.10 | 4.70 | 5.20 | 5.90 | 6.70 |
| Mechanical properties | Metric | Imperial |
| Hardness, Rockwell C (tempered at 1150°F, quenched at 2200°F) | 62 | 62 |
| Hardness, Rockwell C (as hardened, quenched at 2200°F) | 65 | 65 |
| Compressive yield strength (when tempered at 300°F) | 3250 MPa | 471000 psi |
| Izod impact unnotched (when tempered at 300°F) | 67 J | 49.4 ft-lb |
| Abrasion (loss in mm3, as-hardened; ASTM G65) | 25.8 | 25.8 |
| Abrasion (loss in mm3, tempered at 1275°F; ASTM G65) | 77.7 | 77.7 |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Country | USA | German | Japan |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
| Grades | M2 | 1.3343 | SKH51 |
| Thermal properties | Metric | Imperial |
| CTE, linear (@20.0 – 100°C/ 68.0 – 212°F) | 10 μm/m°C | 5.56 μin/in°F |
| CTE, linear (@20.0 – 500°C/68.0 – 932°F) | 12.2 μm/m°C | 6.78 μin/in°F |
| CTE, linear (@20.0 – 850°C/68.0 – 1560°F) | 12.6 μm/m°C | 7 μin/in°F |
| DENSITY (G/CM 3) | 8.08 |
| DENSITY (LB/IN 3) | 0.292 |
| MELTING POINT (°C) | 1425 |
| MELTING POINT (°F) | 2600 |
Yes, High-Speed Steel M2 can be welded, but it requires careful heat control. Preheating, welding with proper filler material, and post-weld heat treatment are necessary to avoid cracking and preserve hardness.
High-Speed Steel M2 bars are not ideal for high-temperature applications, as they can lose hardness and wear resistance above 540°C, limiting their performance in extreme heat conditions.
HSS M2 Bars find extensive applications in the manufacture of high-performance cutting tools like drill bits, milling cutters, taps, reamers, saw blades, and tool bits. Their high-temperature strength and sharpness allow them to be ideally suited for high-speed machining and metal-cutting processes. M2 bars are also used in stamping, punching, and forming dies where durability and wear resistance are a must. Their toughness and thermal stability make them sought after for heavy-duty use in industry. Because of their high performance, M2 bars are commonly used in aerospace, automotive, and metalworking industries, promising consistent accuracy and dependability in production processes.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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