Steel U10

Designation

Name The value
Designation GOST Cyrillic У10
Designation GOST Latin U10
Transliteration U10
By chemical elements 10

Description

Steel U10 is used: for the manufacture of needle wire; tools, working in conditions without heating of cutting edge; the tool for tree processing (manual transverse and carpentry saws, carpentry saws machinery, twist drills); parts dies of cold forming (exhaust, heading, trimming and blanking) of small size and without sharp transitions in cross section; calibers simple form and low accuracy classes; rollers, files, metal scrapers; cold-rolled heat-treated ribbon with a thickness of from 2.5 to 0.02 mm designed for making flat and wire springs and spring-loaded parts of complex configuration (valves, styli, reeds, slats dolnych knives, small constructional details, including hours, etc. (tape is produced according to GOST 2283, GOST 21996 and a number of special technical conditions).

Standards

Name Code Standards
Sheets and strips В23 GOST 103-2006
Bars and shapes В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Bars and shapes В32 GOST 1435-99, GOST 5210-95, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88, TU 14-1-1271-75
Sheets and strips В33 GOST 4405-75, TU 14-131-971-2001
Steel wire medium and high carbon В72 GOST 5468-88, GOST 9389-75
Blanks. Of the workpiece. Slabs В31 TU 14-1-3300-81

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 1435-99 0.95-1.09 ≤0.028 ≤0.03 0.17-0.33 ≤0.2 0.17-0.33 ≤0.25 Rest ≤0.25
Fe is the basis.
According to GOST 1435-99, the mass fraction of chromium, nickel and copper is indicated for 1 group of metal products. The mass fraction of sulfur in steel obtained by the electroslag remelting method should not exceed 0.013%. In the metal products of the third group, the mass fraction of Cr ≤ 0.20-0.40%, Ni ≤ 0.25%, Cu ≤0.25%. In metal products of the 1 st and 3 rd groups, made of steel obtained by scrap-process, the mass fractions of nickel, copper and chromium are increased by 0.05% of each element as compared to those in the table. In a metal designed for the manufacture of cold-rolled strip, an increase in the mass fraction of nickel, copper and chromium is not allowed.

Mechanical properties

Section, mm σU, MPa d5, % d4 y, %
Annealed cold-rolled tape of the highest quality
4 ≤750 - ≥10 -
A sample with a diameter of 5 mm and a length of 25 mm deformed and annealed. The rate of deformation of 10 mm/min strain Rate 0,007 1/C
- ≥105 ≥50 - ≥87
Cold-rolled steel strip sagatovna (specified strength class)
- 750-900 - - -
A sample with a diameter of 5 mm and a length of 25 mm deformed and annealed. The rate of deformation of 10 mm/min strain Rate 0,007 1/C
- ≥90 ≥52 - ≥100
Cold-rolled steel strip sagatovna (specified strength class)
- 900-1050 - - -
A sample with a diameter of 5 mm and a length of 25 mm deformed and annealed. The rate of deformation of 10 mm/min strain Rate 0,007 1/C
- ≥55 ≥59 - ≥100
Cold-rolled steel strip sagatovna (specified strength class)
- 1050-1200 - - -
A sample with a diameter of 5 mm and a length of 25 mm deformed and annealed. The rate of deformation of 10 mm/min strain Rate 0,007 1/C
- ≥29 ≥70 - ≥100
- ≥18 ≥78 - ≥100
- ≥16 ≥86 - ≥100

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
y The relative narrowing

Physical characteristics

Temperature r, kg/m3 l, W/(m · °C) R, Mr. · m a, 10-6 1/°C
0 7810 40 420 -
20 7810 40 420 -
100 - 44 - 115
300 - 41 - 125
600 - 38 - 139
900 - 34 - 154
200 - - - 119
400 - - - 13
500 - - - 134
700 - - - 143
800 - - - 139
1000 - - - 154
1200 - - - 133

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 does not apply to welded structures. Method of welding - CCC.
Склонность к отпускной хрупкости tend not
The temperature of forging Start - 1180 °C, the end - of 800 °C. the cooling of the workpiece cross-section up to 100 mm in the air, 101-300 mm in the pit.
Flock-sensitive sensitivity not sensitive
Machinability when HB 197 Kn TV.SPL.=1.1 Kn b.St.=1.0.
Sanding behaviour good