A513-100 Standard Specification for ERW Carbon Steel
The steel may be made by any process
If a specific type of melting is required by the purchaser, it shall be as stated on the purchase order. The primary melting may incorporate separate degassing or refining, and may be followed by secondary melting, such as electroslag or vacuum-arc remelting. If secondary melting is employed, the heat shall be defined as all of the ingots remelted from a single primary heat. Steel may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The producer shall remove the transition material by an established procedure that positively separates the grades. Tubes shall be made by the electric-resistance-welded process and shall be made from hot- or cold-rolled steel as specified.
The steel shall conform to the requirements as to chemical composition. If no grade is specified, Grades MT 1010 to MT 1020 may be furnished.Analyses of steels other than those listed are available. To determine their availability, the purchaser should contact the producer. When a carbon steel grade is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade permitted.
An analysis of each heat of steel shall be made by the steel manufacturer to determine the percentages of the elements specified; if secondary melting processes are employed, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The heat analysis shall comform to the requirements specified, except that where the heat identity has not been maintained or where the analysis is not sufficiently complete to permit conformance to be determined, the chemical composition determined from a product analysis made by the tubular manufacturer shall conform to the requirements specified for heat analysis. When requested in the order or contract, a report of such analysis shall be furnished to the purchaser.
Post time: Nov-25-2019