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Cold-rolled steel strips and bands

Cold-rolled steel strips and bands

GOST 503-81 Cold-rolled steel strip of low-carbon steel. Technical Requirements

Description

Cold-rolled steel strip is made of the following grades of steel:

  • DC04 with chemical composition acc. to GOST 9045
  • DC01 with chemical composition acc. to GOST 803

Classification and range

By state of material:
  • extrasoft – ES
  • soft – S
  • half cold-worked – HC
  • cold-worked –C
  • heavily cold-worked  – HCW
By accuracy of manufacturing:
– thickness
  • normal accuracy
  •  greater accuracy – T
  • high accuracy – H
– width
  • normal accuracy
  • greater accuracy – W
By type and quality of surface:
  • first group – 1
  • second group – 2
By type of edge:
  • sheared edge – O
  • mill edge – N
By microstructure:
  • without control
  • controlled – C
By camber:
  • without control
  • controlled: class A, class B

Технические характеристики

Type

Thickness H, mm

Thickness tolerance, mm

Width B, mm

Width tolerance, mm

Length, mm

Internal coil diameter

ØID, mm

Coil weight, kg

Strip

0,10 – 0,80

from (-0,01)

to (-0,03)

6 – 60

(-0,2)

off-gage

100 / 200 / 300 / 400

10 – 100

60 – 220

from (-0,2)

to (-0,25)

50 – 500

0,81 – 1,50

from (-0,03)

to (-0,05)

20 – 60

(-0,2)

off-gage

300 / 400 / 500

10 – 100

60 – 220

from (-0,2)

to (-0,25)

50 – 500

Band

0,50 – 3,20

from(-0,025)

to (-0,05)

50 – 220

from (-0,2)

to (-0,25)

1000 – 2000

Production of other sizes according to the agreed tolerance is possible.

Mechanical properties

Strip state

Ultimate tensile strength σB, МPа

Elongation

δ, %

Extrasoft – ES

270 ÷ 390

≥23

Soft – S

310 ÷ 440

≥17

Half cold-worked – HC

370 ÷ 510

≥7

Cold-worked –C

440 ÷ 590

Heavily cold-worked  – HCW

≥540

 Application

Bending, blanking, manufacturing of pipes, flux-cored wire, bearing parts and other metal products.