Billets

BDG Metal produces a wide range of continuously casted Billets in its Integrated Steel Plant. The state-of- art technology ensures international quality standards and ensures smooth and defect-free casting of billets. M.S. Billets are used for rolling of TMT Re-Bars of Fe 415/415D, Fe 500/500D, Fe 550/550D & Fe 600 Grade. The following are the specification of Billets available with BDG Metal & Power.

Physical Properties

Description As per IS 2830 BDG Billets
Bend (max.) 5 mm per meter >= 5 mm per meter
Camber (max.) 3mm per meter >= 3 mm per meter
Length 3 mt to 13 mt 3 mt to 9 mt

Chemical Analysis as per BIS 2830 : 2012

Designation %Carbon %Manganese
C15 0.12-0.18       + 0.30-0.60
C18 0.15-0.21 0.30-0.60
C20 0.17-0.23 0.30-0.60
C15 MMn 0.12-0.18 0.60-1.00
C18 MMn 0.15-0.21 0.60-1.00
C20 MMn 0.17-0.23 0.60-1.00
C15 HMn 0.12-0.18 1.00-1.80
C18 HMn 0.15-0.21 1.00-1.80
C20 HMn 0.17-0.23 1.00-1.80

Billets of different designations are manufactured in three different grades namely A, B, C having sulphur, phosphorous content (on ladle analysis) and carbon equivalent as follows

Chemical Analysis

Grade Sulphur Phosphorous Carbon Equivalent (CE)1
Max Max Max
A 0.050 0.050 0.42
B 0.045 0.045 0.41
C 0.040 0.040 0.39
  1. Carbon equivalent based on ladle analysis = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15
  2. When steel is required in copper bearing quality, copper content is between 0.20 60 0.35 percent

The following are the Special features of the Billets:

Excellent Surface Finish: The Billets produced are free from any surface. Magnetic particle test in order to identify any crack on the surface is done on a regular basis.

Dimensional Tolerance: Billets produced strictly in accordance to IS 2830 for dimensional tolerance.

No Internal Defects: The Billets produced are free from any internal defects. Defects such as piping blowholes and pinholes are identified and segregated by Sulphur Print Test.