Marking of high speed steel
To buy high-speed steel of domestic production at an affordable price the manufacturer offers the company Elektrovek-steel. The supplier guarantees prompt delivery of products to any point specified by the consumer.
The marking of high-speed steels, which are manufactured in accordance with the technical standards GOST 1926573, includes the first letter P (from the word rapid — «fast»).
The number after the letter «P» indicates the average content of tungsten (in percent of the total mass, the letter B is skipped). Then, after the letters M, F and K indicate the percentage of molybdenum, vanadium and cobalt.
The chemical composition of high-speed steels (GOST 19265−73) is presented in the table:
Notes: 1. The content of Mn, Si and Ni is not more than 0.4%; S and P not more than 0,03% (for steels P9F5, P14F4 and P10K5F5 it is allowed 0,035% Р).
2. The content of molybdenum up to 1% in steel P18 and up to 0.6% in steel P9 (grade P18M and P9M) is allowed. With an increase in Mo content in steels P18M and P9M over 0.3%, W content can be reduced in them (1% Mo replaces 2% W).
To buy at high prices from the manufacturer, high-speed steel is offered by Electrovek-Steel. The supplier guarantees the timely delivery of the metal to any point specified by the customer.
According to its chemical composition, high-speed steel is divided into tungsten steel (P9, P12, P18, P18F2), high-vanadium (P9F5, P14F4), cobalt (P9K5, P9K10), cobalt-vanadium (P10K5F5, P18K5F2). A number of steels, which in their properties and applications are considered to be high-speed, is produced by orders of consumers, and GOST 19265−73 does not include:
|R18K8F2M (EP 379)||1.00||18.0||1||4.0||2.2||8.0||-|
The range of produced high-speed steels:
Rods hot-rolled and forged — round and square, strip;
Round rods with high surface finish and increased dimensional accuracy;
Cold rolled tape.
Basic properties of high-speed steels in the initial state of delivery
Kg / m³
Ac 1 , deg
Ar 1 , deg
|Temperature in ° C||Hardness of Brinell, HB||Weight percentage of carbide phase|
|Note. Cooling after annealing is carried out together with the furnace at a speed of no more than 30 0 С / s|
The company Elektrovek-Steel offers at an affordable price high-speed steel of various grades. The supplier guarantees immediate delivery of products to any point specified by the customer.