Detailed information:
Characteristics and Scope of Application:
As a representative steel grade of tungsten molybdenum high carbon cobalt superhard high-speed steel, it has the advantages of high room temperature hardness (up to 70HRC) and high temperature hardness, high red hardness, easy grinding, sharpness, etc., but high cobalt content is expensive. Suitable for producing various high-precision complex cutting tools, such as forming milling cutters, precision cutters, etc., and can also be used as various high hardness cutting heads, blades, etc.
● Chemical composition:
Carbon C: 1.05-1.15 (allowable deviation: ± 0.01)
Silicon Si: 0.15~0.65 (allowable deviation: ± 0.05)
Manganese Mn: 0.15~0.40 (allowable deviation:+0.04)
Sulfur s: ≤ 0.030
Phosphorus p: ≤ 0.030
Chromium Cr: 3.50-4.25 (allowable deviation: ± 0.05)
Nickel Ni: allowable residual content ≤ 0.30
Copper Cu: allowable residual content ≤ 0.25
Vanadium v: 0.95-1.35 (allowable deviation: ± 0.05)
Molybdenum Mo: 9.00-10.00 (allowable deviation: size ≤ 6, ± 0.05; size>6, ± 0.10)
Tungsten w: 1.15~1.85 (allowable deviation: size ≤ 10, ± 0.10;>10, ± 0.20)
Cobalt CO: 7.75-8.75 (allowable deviation: ± 0.15)
● Mechanical properties:
Hardness: Delivery hardness: (other processing methods) ≤ 285HB; (Annealing) ≤ 269HB. Sample heat treatment system and quenching tempering hardness: ≥ 66hrc
Heat treatment specifications and metallographic structure:
Heat treatment specifications: quenching, preheating at 730-840 ℃, heating at 1170-1190 ℃ (salt bath furnace) or 1180-1200 ℃ (box furnace), oil cooling, tempering at 530-550 ℃ for 3 times, each time for 2 hours.
Delivery status: Hot rolled, forged, and cold drawn steel bars are delivered in annealed state, while hot-rolled and forged steel bars are delivered after annealing and other processing methods (such as peeling, light drawing, polishing, or polishing).
1. The company has established long-term and stable cooperative relationships with multiple well-known steel mills at home and abroad, all of which provide original material certification
2. Wholesale and retail, with favorable prices, superior quality (large quantities are preferred), and timely and fast delivery
3. The company has several large vertical band saws and steel plate precision machining machinery,
4. It is a large enterprise that integrates the sales, wholesale, and machining services of multiple imported high-quality mold steel products
5. Wide channels, sufficient supply of goods, and business scope covering all parts of the country, can meet the needs of customers in various regions
Sincerely welcome new and old customers from all walks of life to call and inquire about and negotiate business at any time. Our high-quality products and reasonable prices will definitely meet your requirements!
Welcome new and old customers to call for consultation and negotiation.