High-speed steel marking

Are you interested in the marking of high-speed steel? Supplier Evek GmbH offers to buy high-speed steel in any quantity at an affordable price in a wide range. We provide delivery of products anywhere in the continent. The price is optimal.

Marking

The marking of the high-speed steels, which are produced according to the technical standards of GOST 1926573, includes the first letter P (from the word rapid - "fast"). The number after the letter "P" indicates the average tungsten content (as a percentage 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.

Chemical composition of high-speed steels (GOST 19265-73)

Steel grade C Cr W V Co

Mo,

not more

Р18 0,70-0,80 3,8-4,4 17,5-4,4 1,0-1,4 - 0,3
Р12 0,80-0,90 3,1-3,6 12,0-13,0 1,5-1,9 - 0,3
Р9 0,85-0,95 3,8-4,4 8,5-10,0 2,0-2,6 - 0,3
Р6М3 0,85-0,95 3,0-3,6 5,5-6,5 2,0-2,5 - 3,0-3,6
R18F5 0,85-0,95 3,8-4,4 17,5-19,0 1,8-2,4 - 0,5
P9F5 1,40-1,50 3,8-4,4 9,0-10,5 4,3-5,1 - 0,4
R14F4 1,20-1,30 4,0-4,6 13,0-14,5 3,4-4,1 - 0,4
P9K5 0,90-1,00 3,8-4,4 9,0-10,5 2,0-2,6 5,0-6,0 0,3
Р9К10 0,90-1,00 3,8-4,4 9,0-10,5 2,0-2,6 9,5-10,5 0,3
R10K5F5 1,45-1,55 4,0-4,6 10,0-11,5 4,3-5,1 5,0-6,0 0,3
Р18К5Ф2 0,85-0,95 3,8-4,4 17,5-19,0 1,8-2,4 5,0-6,0 0,5

Notes

1. The content of Mn, Si and Ni not more than 0,4%; S and P not more than 0,03% (for alloys R9F5, R14F4 and R10K5F5 allowed 0,035% P).

2. Tolibden content of up to 1% in steel R18 and up to 0,6% in steel R9 (grade R18M and R9M) is allowed. If the Mo content of P18M and P9M exceeds 0.3%, the W content may be reduced (1% Mo replaces 2% W).

Evek GmbH offers to buy a wide range of fast-cutting steel at an affordable price. We provide delivery of products to any point on the continent. The price is optimal.

Classification

By its chemical composition, high speed steel is divided into tungsten (P9, P12, P18, P18F2), high-cobalt (P9F5, P14F4), cobalt (P9K5, P9K10) and cobalt vanadium (P10K5F5, P18K5F2). A number of steels which by their properties and application are referred to high speed steel are produced by customers' order and are not included into GOST 19265-73:

Steel grade C W Mo Cr V Co Ti
P7T 0,80 7,5 - 3,0 1,3 - 0,15
R6M3K5F2 0,90 6,0 3 4,0 2,3 5,0 -
P18K8F2M (EP 379) 1,00 18,0 1 4,0 2,2 8,0 -

Range of the produced high-speed steels:

hot-rolled and forged bars - round and square, strips;

Round bars with enhanced surface finish and increased dimensional accuracy;

cold rolled strip.

Properties of high-speed steels in delivery condition

Steel grade

density,

kg/m³

As1, deg

Ar1, deg

Temperature in °C Brinell hardness, NV Weight percentage of carbide phase
forging annealing
Р18 8700 820 760 1200-900 840 207-255 28
Р9 8300 810 760 1200-900 850 207-255 17
Р12 8500 810 760 1200-900 840 207-255 23
R18F2 8700 820 760 1200-900 840 207-269 27
R9F5 8110 - - 1180-900 850 207-269 20
R14F4 8420 - - 1180-900 850 207-269 22
R9K5 8300 - - 1150-900 850 207-269 17
R9K10 8300 - - 1180-900 850 207-269 16
R10K5F5 8130 - - 1180-900 850 207-269 22
R18K5F2 8200 - - 1200-900 850 285 25
R6M5 8500 - - 1150-900 840 207-235 20
Р18К8Ф2М 8700 820 - 1180-900 860 262-270 -
Note. Cooling after annealing is carried out with the furnace at a rate not exceeding 30 0 C / s

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Are you interested in the properties, density and specific heat of high speed steels? The supplier Evek GmbH offers to buy high-speed steel in any quantity at the producer's price. We provide delivery of products anywhere in the continent. The price is optimal. We invite to partner cooperation.