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Cold-drawn steel

Cold-drawn carbon steel for general engineering purposes in bars

GOST 1050, GOST 1051

Application:

Used for general engineering purposes, for manufacture of a wide variety of parts, products, machine components and mechanisms

Description:

The product is made of carbon constructional steel in accordance with GOST 1050, GOST 14955 or specifications agreed by customer

Steel grades:

“10” (rus) - eq. to C10; “20” (rus) - eq. to C22; “30” (rus) - eq. to C30; “35” (rus); “40” (rus); “45” (rus) - eq. to 2C45; “50” (rus)

Specifications:

Rounds:

Size, mm

Length, m

Length tolerance, mm

Weight of pack, tons

5 ÷ 60

2,5 ÷ 6,5

-0,0/+50,0 or
-0,0/+100,0

1 ÷ 8

Squares:

Size, mm

Length, m

Length tolerance, mm

Weight of pack, tons

12 ÷ 40

2 ÷ 6

-0,0/+50,0 or
-0,0/+100,0

1 ÷ 5

Hexagons:

Size, mm

Length, m

Length tolerance, mm

Weight of pack, tons

5 ÷ 55

2,5 ÷ 6,5

-0,0/+50,0 or
-0,0/+100,0

1 ÷ 8

Mechanical properties - according to GOST 1050 or specifications agreed by customer

Tolerance classes and surface quality:

Tolerance class

Class of surface quality

h9; h10; h11; h12

“В” (rus) - class 3

Tolerance classes in accordance with GOST 7417 (eq. to EN 10278, ISO 286-2):

Nominal dimension, mm

Tolerance (max), mm

h9

h10

h11

h12

≤ 3,0

-0,025

-0,040

-0,060

-0,100

3,1 - 6,0

-0,030

-0,048

-0,075

-0,120

6,1 - 10,0

-0,036

-0,058

-0,090

-0,150

10,2 - 18,0

-0,043

-0,070

-0,110

-0,180

18,5 - 30,0

-0,052

-0,084

-0,130

-0,210

31,0 - 50,0

-0,062

-0,100

-0,160

-0,250

Surface quality in accordance with GOST 1051:

Class of surface quality

Tolerance class

Surface defects

Maximum depth of permissible surface defects

“А” (rus) - class 1

h9

Single small scratches of mechanical origin

In accordance with customer/supplier agreement

h10

½ tolerance

“Б” (rus) - class 2

h10

Single small mechanical scratches, scale residues, impressions, ripple markings, sloping cleanup traces, cleanup marks from abrasives

Tolerance (maximum deviation from a nominal dimension)

h11

h12

“В” (rus) - class 3

h10

Single small mechanical scratches, scale residues, impressions, ripple markings, sloping cleanup traces, cleanup marks from abrasives, single small expanded blisters, impurities and crazing

Tolerance (maximum deviation from a nominal dimension)

h11

“В” (rus) - class 3

h12

Single small mechanical scratches, scale residues, impressions, ripple markings, sloping cleanup traces, cleanup marks from abrasives, single small expanded blisters, impurities and crazing

Maximum deviation from a nominal dimension for tolerance class h12

Maximum deviation from a nominal dimension for tolerance class h11

Conditions of delivery and packaging:

Condition of delivery

Steel without heat treatment

Heat-treated steel

Packaging

Recrystallisation annealing

Recrystallisation annealing

Without corrosion protection

With corrosion protection

Soft packaging without corrosion protection

Soft packaging with corrosion protection

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Colddrawn carbon steel for general engineering purposes in bars GOST 1050, GOST 1051