Common use of CHEMICAL COMPOSITION Clause in Contracts

CHEMICAL COMPOSITION. The supplied steel shall conform to the chemical composition presented in Table 4-4, unless otherwise modified as approved by the Employer’s Representative. The ladle analysis of the steel shall be carried out by the method specified in relevant parts of IS 228 or any other established international standard. However, where the method is not given in IS 228 and its relevant parts, a suitable method shall be adopted as agreed between the Employer’s Representative and the Contractor. The product analysis shall be carried out on the finished plates. Carbon (C) 0.20 0.02 Manganese (MN) 1.3 0.04 Sulphur (S) 0.04 0.005 1. Carbon Equivalent (CE) = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15 2. CE based on ladle analysis shall be 0.45 as per IS 3589 3. The minimum Si in silicon kilned steel shall not be less than 0.10%. When the steel is Al/Al-Si kilned, the requirement regarding minimum silicon content need not apply. 4. When micro-alloying elements like Nb, V and Ti are used individually or in combination the total content shall not exceed 0.2%. Copper may be present between 0.20 to 0.35 percent as mutually agreed to between the Contractor (and manufacturer) and the Employer’s Representative. The copper bearing quality shall be designated with a suffix Cu, for example, Fe 410 Cu + WA. Nitrogen content of the steel should not exceed 0.012%, which shall be ensured by the Contractor (or manufacturer) by inspection analysis.

CHEMICAL COMPOSITION. The supplied steel shall conform to the chemical composition presented in Table 4-4, unless otherwise modified as approved by the Employer’s Representative. The ladle analysis of the steel shall be carried out by the method specified in relevant parts of IS 228 or any other established international standard. However, where the method is not given in IS 228 and its relevant parts, a suitable method shall be adopted as agreed between the Employer’s Representative and the Contractor. The product analysis shall be carried out on the finished plates. Carbon (C) 0.20 0.02 Manganese (MN) 1.3 0.04 Sulphur (S) 0.04 0.005 Phosphorus (P) 0.04 0.005 1. Carbon Equivalent (CE) = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15 2. CE based on ladle analysis shall be 0.45 as per IS 3589 3. The minimum Si in silicon kilned steel shall not be less than 0.10%. When the steel is Al/Al-Si kilned, the requirement regarding minimum silicon content need not apply. 4. When micro-alloying elements like Nb, V and Ti are used individually or in combination the total content shall not exceed 0.2%. Copper may be present between 0.20 to 0.35 percent as mutually agreed to between the Contractor (and manufacturer) and the Employer’s Representative. The copper bearing quality shall be designated with a suffix Cu, for example, Fe 410 Cu + WA. Nitrogen content of the steel should not exceed 0.012%, which shall be ensured by the Contractor (or manufacturer) by inspection analysis.