Brand Name :
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Type/Size/Grade/Variety :
Name of the product Bright Steel Bars
Product Designation As per Annex-A
Treatment Condition at Delivery Cold drawn (+C)
Soft annealed and cold drawn (+A+C)
Product Form Round bars
Sizes Diameter from 6.00mm to upto and including 40.00mm
Surface Quality Class 1,2,3,4
Annex-A
S. No Steel Designation / Grade Chemical Composition (%) Mechanical Properties (if any)
1.
IS 9550 SUP9D % C : 0.56-0.62
% Si: 0.15-0.35
% Mn: 0.70-1.00
% Cr: 0.75-1.00
% S: 0.035 Max
% P: 0.035 Max Tensile Strength - 125 kg/mm? Min.
Yield Strength - 110 kg/mm? Min.
% Elongation – Min. 9
% Reduction of Area – Min. 20
Hardness: 39-43 HRC
2. IS 9550 POSMA45R % C : 0.43-0.47
% Si: 0.20-0.40
% Mn: 1.10-1.50
% Ni: 0.05-0.20
% Cr: 0.05-0.15
% S: 0.030-0.060
% P: 0.030 Max
% Al: 0.01-0.07
% V: 0.09-0.11
% Ti: 0.01-0.03
Hardness - HRC 24-30
3. IS 9500 S20C % C: 0.18-0.23
% Si: 0.15-0.35
% Mn: 0.30-0.60
% Ni: 0.20 Max
% Cr: 0.20 Max
% Cu: 0.30 Max
% S: 0.035 Max
% P: 0.030 Max -
4. IS 9500 51CRV4 % C: 0.47-0.55
% Si: 0.40 MAX
% Mn: 0.70-1.10
% Cr: 0.90-1.20
% V: 0.10-0.25
% S: 0.025 MAX
% P: 0.025 Max -
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