FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, in particular to alloy structural steel grades used to manufacture articles by means of cold die forging. Steel contains carbon, silicon, manganese, chromium, nickel, titanium, aluminium, molybdenum, tungsten, vanadium, boron, iron and unavoidable impurities with the following ratio of the components, wt %: carbon 0.08 - 0.18, silicon 0.05 - 0.40, manganese 0.20 - 0.80, chromium 0.50 -1.10, nickel 1.20 - 2.10, titanium 0.01 - 0.11, aluminium 0.002 - 0.11, molybdenum 0.20 maximum, tungsten 0.20 maximum, vanadium 0.08 maximum, boron 0.0005-0.005, iron and unavoidable impurities are the rest. After spheroidising annealing, it has a homogeneous ferrite pearlitic structure containing 70% granular pearlite minimum with hardness of 149 HB maximum.
EFFECT: improved mechanical and performance characteristics.
3 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ROUND-PROFILED ROLLED IRON FROM LOW-ALLOYED STEEL FOR COLD DIE FORGING OF HIGH-STRENGTH FASTENING MEMBERS | 2003 |
|
RU2249625C1 |
| ROUND-PROFILED ROLLED IRON FROM MEDIUM-CARBON BORON-CONTAINING STEEL FOR COLD DIE FORGING OF HIGH-STRENGTH FASTENING MEMBERS | 2003 |
|
RU2249626C1 |
| ROUND BAR OUT OF BORON CONTAINING STEEL FOR COLD DIE FORGING | 2006 |
|
RU2336316C2 |
| ROUND-PROFILED ROLLED IRON FROM LOW-ALLOYED STEEL FOR COLD DIE FORGING OF HIGH-STRENGTH GEOMETRICALLY COMPLEX FASTENING MEMBERS | 2003 |
|
RU2249624C1 |
| STRUCTURAL STEEL FOR VOLUME-SURFACE HARDENING | 2011 |
|
RU2450079C1 |
| HOT-ROLLED STEEL FOR HOT FORMING | 2015 |
|
RU2605034C1 |
| ROLLED SECTION FOR MANUFACTURING OF BALL PINS | 2008 |
|
RU2368672C1 |
| METHOD OF THERMAL TREATMENT OF PARTS FROM STRUCTURAL STEEL OF LOWER AND REGULATED HARDENABILITY | 2010 |
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RU2450060C1 |
| METHOD FOR PRODUCING OF ROLLED BARS FROM BORON STEEL FOR COLD BULK PRESSING OF HIGH-STRENGTH FASTENING PARTS | 2003 |
|
RU2238333C1 |
| STEEL | 0 |
|
SU1406208A1 |
