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Steel 08KP

Designation

Name The value
Designation GOST Cyrillic 08кп
Designation GOST Latin 08kp
Transliteration 08kp
The chemical elements 8

Description

Steel 08KP is used: for the manufacture of sheet metal 1−3 mm 4−14 category, intended for cold forming; sheet rolled double-sided electrolytic coating and single-side polymer coating, used in the construction industry, commercial engineering, industrial ventilation, household appliances, decoration and other purposes; gaskets, washers, plugs, tubes, and parts subjected to chemical-thermal treatment of bushings, eyelets, rods; for the manufacture of parts by cold-forming steel has the ability to very deep drawing (VG); electrically welded tubes; wrapped soldered double-layer tubes for hydraulic system pipes combines, tractors, cars, refrigerators, enamelware, etc.; cold strip 0,05−4,00 mm, designed for bending, punching parts, manufacture of pipes, cored wire, parts, bearings and other metal products; details of electrical equipment of vehicles; electric cold pipes for propeller shafts of automobiles, tractors and machinery.

Note

Steel quality carbon structural magnetically soft. The degree of deoxidation — KP.

Standards

Name Code Standards
Sectional and shaped rolling В32 GOST 1050-88, GOST 7417-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, GOST 1050-2013, TU 14-1-2118-77, TU 14-1-3995-85, TU 14-11-245-88, TU 14-1-263-72, TU 14-1-1271-75, TU 14-136-367-2008
Sheets and stripes В33 GOST 1577-93, GOST 4041-71, GOST 9045-93, GOST 13345-85, GOST 24244-80, TU 14-1-2039-77, TU 14-1-2456-78, TU 14-1-2473-78, TU 14-1-420-72, TU 14-1-4516-88, TU 14-1-5003-91, TU 14-15-117-83, TU 14-1-520-73, TU 14-1-524-73
Pipes steel and connecting parts to them В62 GOST 3262-75, GOST 5005-82, GOST 8639-82, GOST 8642-68, GOST 8644-68, GOST 8645-68, GOST 8646-68, GOST 10704-91, GOST 10705-80, GOST 10707-80, GOST 11249-80, GOST 13663-86, GOST 13664-68, TU 14-3-1542-87, TU 14-3-1569-88, TU 14-3-1034-81, TU 14-3-1428-86, TU 14-3Р-63-2002, TU 1373-022-05757850-08, TU 1373-013-02949352-2003
Tapes В24 GOST 3560-73
Steel wire medium- and high-carbon В72 GOST 3920-70, GOST 7372-79, GOST 9389-75, GOST 9850-72, GOST 17305-91, GOST 26366-84
Tapes В34 GOST 503-81, GOST 10234-77, GOST 19851-74, TU 14-1-754-73, TU 14-4-151-82, TU 14-1-1766-76, TU 14-1-3035-80, TU 14-1-357-72, TU 14-4-174-72
Low-carbon steel wire В71 GOST 5663-79
Sheets and stripes В23 GOST 82-70, GOST 14918-80, GOST 16523-97, GOST 19904-90, GOST 16523-89, GOST 16523-70, GOST 19903-90, TU 14-1-4695-89
Sectional and shaped rolling В22 GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8319.0-75, GOST 9234-74, GOST 10551-75, GOST 11474-76, GOST 2590-2006, GOST 2879-2006, TU 14-2-341-78
Bulls. Blanks. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
Non-ferrous metals, including rare metals, and their alloys В51 OST 4.021.009-92
Tapes В54 TU 48-21-166-82

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
TU 14-1-1271-75 ≤0.08 ≤0.04 ≤0.035 ≤0.35 ≤0.05 ≤0.02 ≤0.1 The rest ≤0.25
Fe is the basis.
According to GOST 1050-88, the nitrogen content is specified for the steel of the oxygen-converter method of smelting. For all other types of smelting, the nitrogen content was N ≤ 0.008%.
According to TU 14-1-1271-75 and TU 14-1-3995-85, the total content of sulfur and phosphorus should be ≤ 0.070%.
According to GOST 4041-71 the chemical composition is given for steel used for the production of flat products of the third category. Rental of 1-2 categories are made by chemical composition GOST 1050.
According to GOST 503-81, in the production of a soft rubber tape intended for the vacuum-vacuum industry, the mass fraction of carbon should not be more than 0.08%, sulfur and phosphorus - not more than 0.022% each.
According to TU 14-1-3995-85

Mechanical characteristics

Section, mm σB, MPa d5, % d4 HRB
- - 1-3 - -
- 17-76 - - -
Tape flatted average strength of 0.1-4.0 mm according to GOST 10234-77 in the state of delivery (indicated delivery)
- 690-830 - - -
List 3 categories of heat-treated
- 365 ≥36 - -
Hot-rolled sheet in the delivery condition. Group strength К260В
≤2 260-380 - ≥25 ≤60

Description mechanical marks

Name Description
Section Section
σB Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
HRB Rockwell hardness (indenter steel, spherical)

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м
0 203 7871 63 147
20 203 7871 63 147
1300 - - 7 -

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity
R UD. the resistivity
a The coefficient of linear expansion

Technological properties

Name The value
Weldability Welded without restriction, except for the parts after chemical and heat treatment; welding methods: SMAW, ADS submerged arc and gas protection, the CCC.
Propensity to temper brittleness Tend not.
Forging temperature Start - 1250 °C, the end - of 800 °C. the cross Sections up to 300 mm are cooled in air.
Flock-sensitive sensitivity not sensitive.
Workability by cutting In the hot rolled condition when blower SB 131 and HB=315-410 MPa Kn TV.SPL.=Of 2.1 Kn b.St.=Of 1.65.

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