GOST of high-speed steel
Are you interested in the GOST for 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 to any point on the continent. The price is optimal.
Main technical norms
In CIS countries production of all brands of high-speed steel is regulated by
| GOST | Production of which steel bars are regulated by |
| 2590-88 и 2591-88 | Hot-rolled round and square sections |
| 1133-71; | Forged |
| 4405-75 | Strip |
| 7417-75 | Calibrated ; |
| 14955-77 | Steel with special surface finish in diameter from 1 to 25 mm |
Metal products are subdivided by macrostructure and carbide heterogeneity into groups:
Group I (thickness from 80 to 200 mm);
Group II (thickness up to 150 mm).
According to the way of further processing the steel considered is subdivided into two subgroups: for hot working by pressure, and for cold machining.
Evek GmbH offers to buy a wide range of high-speed steel at an affordable price. We provide delivery of products to any place on the continent. Price is optimal.
Technical requirements, GOST 19265-73
| Steel grade | Hardness | Temperature, °С | |||
| after annealing | after quenching with tempering HRC (HRCe), not less | tempering | tempering | ||
| NV, no more | imprint diameter, mm, no less | ||||
| Р18 | 255 | 3,8 | 63 (62) | 1270 | 560 |
| Р6М5 | 255 | 3,8 | 64 (63) | 1220 | 550 |
| 11Р3АМ3Ф2 | 255 | 3,8 | 64 (63) | 1200 | 550 |
| R6M5F3 | 269 | 3,7 | 65 (64) | 1220 | 550 |
| R12F3 | 269 | 3,7 | 64 (63) | 1250 | 560 |
| R18K5F2 | 285 | 3,6 | 64 (63) | 1280 | 570 |
| R9K5 | 269 | 3,7 | 64 (63) | 1230 | 570 |
| R6M5K5 | 269 | 3,7 | 65 (64) | 1230 | 550 |
| R9M4K8 | 285 | 3,6 | 65 (64) | 1230 | 550 |
| Р2АМ9К5 | 285 | 3,6 | 65 (64) | 1200 | 540 |
Notes:
1. Allowable deviations from these temperatures shall not exceed ±10 °C.
2. Hardness values after hardening and tempering depending on tempering temperature are given in Appendix 4.
By customer request, steel grades R12F3, R9K5, R6M5F3, R6M5K5 are made with hardness not exceeding 255 NV (the diameter of the indentation is notSteel grades Р18К5Ф2, Р9М4К8 are made with hardness not more than 269 НВ (diameter of the imprint is not less than 3,7 mm). In the steel macrostructure is not allowed: cushion friability, delamination, bubbles, inclusions and cracks.
Standards for carbide heterogeneity
| Diameter of the circle or side of the square, mm | Rating in points, not more, for groups | |
| I | II | |
| Up to 20 | - | 2 |
| Sv. 20 to 40 | - | 3 |
| " 40 "60 | - | 4 |
| " 60 "80 | - | 5 |
| " 80 "100 | 5 | 6 |
| " 100 "150 | 6 | 7 |
| " 150 "180 | 7 | - |
| " 180 "200 | 8 | - |
The carbide heterogeneity of the strip shall correspond to the carbide heterogeneity of the square profile with equal cross-sectional area.
Accumulations of angular carbides in rods with special surface finish of Р6М5, Р6М5Ф3, 11Р3АМ3Ф2, Р9К5, Р6М5К5, Р2АМ9К5 grades are not allowed. Single "angular" carbides occurring in separate fields of view are allowed.
The standards of group I are provided by electroslag remelting.
Depth of decarburized layer of hot-rolled, forged and calibrated steel must not exceed on the side:
0.3 mm plus 2% of the diameter or thickness - for diameters or thicknesses up to 20 mm;
0.5 mm plus 1% of the diameter or thickness - for diameters or thicknesses over 20 mm.
No decarburized layer is allowed on rods with special surface finish.
The ends of bars and strips shall be evenly trimmed, cropped, without burrs and chips.
The length of the crumpled ends shall not exceed:
1.5 diameter or thickness - for metal products with a diameter or thickness up to 10 mm;
40 mm - for steel products with a diameter or thickness over 10 to 60 mm;
60 mm - for metal products with a diameter or thickness over 60 mm.
On the surface of bars and strips should not be rolled and unfolded bubbles, dirt, stress and grinding cracks, rolls and shackles, rolled films. Defects must be removed by hollow cutting, stripping, the depth of which shall not exceed the size tolerance. Individual fine risks, ripples, imprints and other defects of mechanical origin with a depth not exceeding half the size tolerance are allowed without scraping.
On the surface of bars and strips, defects are allowed, if their depth, determined by control filing, does not exceed the standards given in clause 3.7 (depth of decarburized layer).
The surface of the calibrated steel must meet the requirements of
Surface finish group should be specified in the order. By agreement of the parties hot-rolled and forged round steel is made with roughly ground or honed surface.
Buy. Supplier, price.
Are you interested in the GOST of high-speed steel? The supplier Evek GmbH offers to buy high-speed steel in any quantity at the manufacturer's price. We provide delivery of products anywhere in the continent. The price is optimal. We invite you to partner cooperation.
