Table of Content
What are the uses of hss material round bars?
Round high-speed steel (HSS) bars are frequently utilised in a variety of drilling, tapping, and cutting operations. For cutting and shaping tough materials like stainless steel, titanium, and tool steel, hss material round bars are especially helpful. They are also used to make punches, dies, and other metalworking equipment, as well as cutting instruments including drills, reamers, taps, and milling cutters. For the precise cutting and shaping of parts and components, they are also utilised in the aerospace, medical, and automotive industries. HSS round bars can also be utilised for drilling and exploration in the oil and gas industry.
What is the hss m35 chemical composition for round bars?
HSS M35 chemical composition typically contains a well-balanced alloy of carbon (C), which ranges from 1.40 to 1.60%, chromium (Cr), which ranges from 4.00 to 5.00%, molybdenum (Mo), which ranges from 6.00 to 7.00%, tungsten (W), which ranges from 5.50 to 6.50%, cobalt (Co), which ranges from 5.50 to 7.00%, vanadium (V), which Cobalt-molybdenum high-speed steel of the M35 grade has an alloy composition that is well-balanced and offers incredible wear resistance and toughness. Fantastic-performance cutting tools and other uses that call for high wear resistance and high compressive strength can benefit from the steel’s high cobalt and molybdenum content.
Country | USA | German | Japan |
Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
Grades | M35 | 1.3243/HS6-5-2-5 | SKH55 |
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 |
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Modulus of Elasticity | kN/mm³² psi |
230 34 · 10 6 |
205 31 · 10 6 |
184 27 · 10 6 |
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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 |
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Thermal Conductivity | W/m °C Btu/sq. ft. h °F/in. |
24 166 |
28 194 |
27 187 |
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Specific Heat | J/kg °C Btu/lb °F |
420 0.10 |
510 0.12 |
600 0.14 |
Mechanical properties | Metric | Imperial |
Hardness, Rockwell C (oil quenched from 1232°C, 5 mins) | 64.8 | 64.8 |
Hardness, Rockwell C (oil quenched from 1177°C, 5 mins) | 65.2 | 65.2 |
Hardness, Rockwell C (oil quenched from 1204°C, 5 mins) | 65.2 | 65.2 |
Modulus of elasticity | 207 GPa | 30000 ksi |
Machinability (1% carbon steel) | 45.0 – 50.0% | 45.0 – 50.0% |
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 |
Generally, high speed steels are used for machining at high speeds. HSS M35 steel materials are widely used for: