Starc Metals, located in Canberra, Australia, stands out as a top-notch manufacturer and supplier of high-quality metals, with a particular focus on High Speed Steel (HSS) M35 Bars. Known for their precision, durability, and reliability, Starc Metals caters to industries that demand high-performance cutting tools and components. The company places a strong emphasis on quality control and utilizes advanced manufacturing techniques to produce bars that adhere to international standards. With a dedication to excellence and ensuring customer satisfaction, Starc Metals guarantees that clients throughout Australia and beyond receive dependable, high-strength materials that are perfect for the rigorous demands of metalworking, machining, and tooling sectors.
High Speed Steel M35 Bars are a blend of alloyed steels, featuring around 1.0% carbon, 4.0% cobalt, 5.0% molybdenum, 4.0% chromium, and 6.4% tungsten. The inclusion of cobalt boosts red-hardness and wear resistance, making these bars ideal for high-temperature cutting tasks. In terms of mechanical properties, M35 bars showcase remarkable hardness, tensile strength, and toughness, typically achieving a hardness range of 62–65 HRC after heat treatment. Their outstanding ability to retain a cutting edge, along with excellent shock resistance, ensures top-notch performance in high-speed machining settings, making them perfect for crafting drills, taps, milling cutters, and other precision tooling components.
| ASTM A600 | C | Mn | P | S | Si | Cr | V | Mo | W | Co | ||||||||
| M35 | 0.82 | 0.95 | 0.15 | 0.40 | 0.03 | 0.03 | 0.20 | 0.45 | 3.80 | 4.50 | 1.75 | 2.15 | 4.75 | 5.25 | 5.50 | 6.50 | 4.60 | 5.00 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | Mo | W | Co | ||||||||
| 1.3243/HS6-5-2-5 | 0.87 | 0.95 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 1.70 | 2.10 | 4.70 | 5.20 | 5.90 | 6.70 | 4.50 | 5.00 |
| JIS G4403 | C | Mn | P | S | Si | Cr | V | Mo | W | Co | ||||||||
| SKH55 | 0.87 | 0.95 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 1.70 | 2.10 | 4.70 | 5.20 | 5.90 | 6.70 | 4.50 | 5.00 |
| Temperature °C / °F | |||||||
| 20 / 70 | 400 / 750 | 600 / 1110 | |||||
| Density | Kg/m³ lbs/in³ | 8150 .294 | 8050 .290 | 7990 .228 | |||
| Modulus of Elasticity | kN/mm³² psi | 230 34 · 10 6 | 205 31 · 10 6 | 184 27 · 10 6 | |||
| Coefficient of Thermanl expansion from 20°C / 70°F | per °C per °F | – | 11.6 · 10-6 6.4 · 10-6 | 11.9 · 10-6 6.6 · 10-6 | |||
| Thermal Conductivity | W/m °C Btu/sq. ft. h °F/in. | 24 166 | 28 194 | 27 187 | |||
| Specific Heat | J/kg °C Btu/lb °F | 420 0.10 | 510 0.12 | 600 0.14 | |||
| Country | USA | German | Japan |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
| Grades | M35 | 1.3243/HS6-5-2-5 | SKH55 |
| Thermal properties | Metric | Imperial |
| CTE, linear (@21 – 399°C / 69.8 – 750°F) | 11.4 μm/m°C | 6.33 μin/in°F |
| CTE, linear (@21 – 593°C /69.8 – 1100°F) | 11.5 μm/m°C | 6.39 μin/in°F |
| Type | SIZES (mm) | SIZES (Inches) | ISO Tolerance |
|---|---|---|---|
| Cold Drawn and Ground | 10.00 – 75.00 | 5/6″ – 2.50″ | h8-h9-h10-h11 |
| Peeled and Polished | 40.00 – 150.00 | 1.50″ – 6.00″ | h11, h11-DIN 1013 |
| Peeled and Ground | 20.00 – 50.00 | 3/4″ – 2.00″ | h9-h10-h11 |
| Cold Drawn and Polish | 3.00 – 75.00 | 1/8″ – 3.00″ | h8-h9-h10-h11 |
Yes, High-Speed Steel M35 can be welded, but it requires careful control of heat and preheating. Post-weld heat treatment is often necessary to restore its hardness and performance.
Yes, High-Speed Steel M35 bars can be customized in terms of dimensions, shape, and surface finish. Machining and heat treatment processes can also be tailored to meet specific performance requirements.
High-Speed Steel M35 bars should be stored in a dry, cool environment, away from moisture and extreme temperatures. They should be kept on racks to prevent contact with corrosive materials.
High Speed Steel M35 Bars find extensive use in the production of cutting tools and precision instruments. Their exceptional hardness and heat resistance make them perfect for applications involving drills, taps, milling cutters, reamers, and tool bits that operate under high-speed and high-temperature conditions. Industries such as automotive, aerospace, general engineering, and tool-making depend on M35 bars for reliable performance and prolonged tool life. Moreover, they are also utilized in creating custom components that require high wear resistance and strength. Starc Metals provides these bars to fulfill a wide range of industrial needs.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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