Steel U10
Designation
| Name |
The value |
| Designation GOST Cyrillic |
У10 |
| Designation GOST Latin |
U10 |
| Transliteration |
U10 |
| The 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 stripes |
В23 |
GOST 103-2006 |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
| Sectional and shaped rolling |
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 stripes |
В33 |
GOST 4405-75, TU 14-131-971-2001 |
| Steel wire medium- and high-carbon |
В72 |
GOST 5468-88, GOST 9389-75 |
| Bulls. Blanks. 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 |
The 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 characteristics
| Section, mm |
σB, 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 |
| Section |
Section |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d4 |
Elongation after rupture |
| y |
The relative narrowing |
Physical characteristics
| Temperature |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
a, 10-6 1/°С |
| 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. |
| Propensity to temper brittleness |
tend not |
| Forging temperature |
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 |
| Workability by cutting |
when HB 197 Kn TV.SPL.=1.1 Kn b.St.=1.0. |
| Grindability |
good |
