Crca (cold Rolled Close Annealed Coils )specifications: As Per Is:

CRCA (Cold Rolled Close Annealed Coils )Specifications: As per IS: 513

Thickness

0.30 mm – 5.5 mm

Width Length (For Sheets)

6 mm – 1000 mm

Temper

1/8

Surface Finish Grade Edge Thickness Tolerance Width Tolerance Coil Weight Coil ID Coil OD Length Tolerance (For Sheets) Camber Tolerance

Dull/Bright/Matt/Mirror

up to 7000 mm Hard , 1/4 Hard, 1/2 Hard, Full Hard

D/DD/EDD/Super EDD Mill Edge/ Slit Edge +/- 0.02 mm As per Specification 0.250 MT – 10 MT 400 to 500 mm Up to 1300 mm - 0 mm/+5 mm 1.50 mm Max. per 1000 mm

PROPERTIES OF COLD ROLLED CLOSED ANNEALED STEEL COIL AS PER IS:513 Hardness for Different

Chemical

International Standards

Composition % (Max)

Mechanical Properties

Temppers of 'O' Grade**

Grade as per

Process JIS DIN BS drawing C requirement G3141 1623 1448 characteristics

Ordinary 'O'

Moderate Bending

-

-

-

Tesile Yield Mn S

Ph

0.15 0.60 0.055 0.055

Elongation Hardness Yield Stess Min % (Min) HRB Mpa Mpa(Max)

Max

1)85 2)75 - 85 -

-

-

-

3)60 75 70 4)53 60 5)40

Moderate Drawing 'D'

Bending & forming

Deep Drawing Very High 'DD' Bending Forming &

SPCC

ST 12

SPCD ST 13

270- 280 410

28

65

CR3 0.10 0.45 0.035 0.035 270- 250 370

32

57

CR4 0.12 0.50 0.040 0.040

-

-

-

-

Drawing Sever Extra Deep Bending Drawing 'EDD' Forming & Drawing

SPCD ST OR 14 SPCEN

CR2 270OR 0.08 0.40 0.030 0.030 220 350 CR1

36

50

-

-