Cold Rolled Closed Annealed

 

Thickness

0.05 mm to 4 mm

Width

5mm to 600 mm

Edge Condition

Trimmed as rolled - as per customers requirement

Coil Weight

26 Kg to 3 MT - as per customers requirement

Finish

Bright & Matte

Grade/ Quality

Super EDD/EDD/DD/D (SPCX,SPCEN,SPCD,SPCC) of non-ageing, IF-Hight Strength steel (IF-HSS), Hight Strength Low Alloy steel(HSLA). viz., ST-42, ST-45, ST-52, SAPH-400/410, Steel for Porcelein Enameling, Corrosion Resistant Steel viz. Tin<ill Black Plate (TMBP)

   

 

Parameters

- CRCA CRFH
- Drawing
Deep Drawing
Extra Deep Drawing
Interstitial Freed		 -
Thickness

0.10 - 4 mm
Width

5 - 500mm
Coil weight

1 - 10 kg per mm of strip width
Finish

Bright & Matt

 

 

 

 Chemical Composition

Specification IS:513

Chemical composition (%max)

Mechanical properties
Grade Carbon Mn Si P Tensile stress Kgf/mm2 Elongation(%)Min(a)
Ordinary O 0.15 0.6 0.055 0.055 -- --
Drawing D 0.12 0.5 0.04 0.04 28-42 28
Deep Drawing DD 0.1 0.45 0.035 0.035 28-38 32
Extra Deep Drawing EDD 0.08 0.4 0.03 0.03 28-36 36

 

Mechanical Properties

Grade Hardness


(HRB)

 YS Range

(MPa)

 UTS Range

(MPa)

% Elongation

 r-Bar n-Value

  
  on 50mm GL on 80mm GL
IF 28-36 130-160 275-305 48 min 42 min 1.8 min 0.22min
EDD 34-45 130-180 275-315 44 min 38 min 1.6 min 0.2 min
D/DD 45-55 150-240 275-375 35 min 28 min 1.3 min 0.18 min
CQ 50-60 - - - - - -

 

Specification

   IS 513 JIS G3141 BS 1449 DIN 1623 ASTM EN 10130
 Commercial Quality O SPCC CR4   CQ FEP01
 Drawing Quality D SPCD CR3 St 12,13 CQ FEP03
 Deep Drawing Quality DD SPCE CR2 St 14 DQ FEP03
 Extra Deep Drawing Quality        (All Killed, Non Ageing) EDD SPECEN CR1   EDDQ FEP04
Extra Deep Drawing* Quality     (IF Grde)*           FEP05
Super Extra Deep Drawing Quality (IF Grade)            
 High tensile grades available as per customer's specifications on mutual agreement  

 

 Notes :-

  1. Gauge length Is-513

  2. Value thickness less than 1.0mm the percentage elongation is reduced by 1 unit for each 0.25mm reduction in thickness.

  3. For thickness less than 1.0mm the percentage elongation is reduced by 1 unit for each 0.25 reduction in thickness.

  4. To thickness less than or equal to 0.7mm. Minimum values lower by 2 units are permitted for elongation after fracture.

 

 Standard Of Specification  

QUALITY/GRADE

IS 513/94

BS 1449/91

JIS 3141/96

DIN 1623/83

Drawing
Deep Drawing
Extra Deep Drawing

D
DD
EDD

CR-4
CR-3
CR-2/CR-1

SPCC
SPCD
SPCE

St.12
RRSt.13
RRSt.14

 

Applications

CRFH D DD , D DD , D IF , EDD , DD , D
Galvanising Drums, Furniture, Panels White goods industry  General engineering Automobile applications

 

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