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Cold-drawn steel

Cold-drawn alloy steel in bars

GOST 4543

Application:

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

Description:

The product is made of alloy constructional steel in accordance with GOST 4543 or specifications agreed by customer. These steels have greater strength, hardness, hot hardness, wear resistance, hardenability, or toughness compared to carbon steel

Steel grades:

“12ХН3А” (rus) - eq. to 14NiCr14; “15Х” (rus) - eq. to 15Cr2; “15ХР” (rus); “18ХГТ” (rus) - eq. to 20MC5; “20Х” (rus) - eq. to 20Cr4; “20ХНМ” (rus) - eq. to A304(4320H); “25ХГТ” (rus); “30ХГТ” (rus) - eq. to 30MnCrTi4; “35Х” (rus); “35ХГСА” (rus); “40Х” (rus) - eq. to 37Cr4; “40ХН” (rus); “45Х” (rus) - eq. to 41Cr4

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

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 4543 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

Spheroidising annealing

Without corrosion protection

With corrosion protection

Soft packaging without corrosion protection

Soft packaging with corrosion protection

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Colddrawn alloy steel in bars GOST 4543