Thickness: Thickness:3mm-650mm; Width:1000mm-4500mm; Length:3000mm-18000mm
Delivery Time: 15-30days, depends on the quantity
Minimum Order Quantity: NA
Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
The following standardized supplementary requirements are for use when desired by the purchaser.
Those that are considered suitable for use with each material specification are listed in the specification. Other tests may be performed by agreement between the supplier and the purchaser.
These additional requirements shall apply only when specified in the order, in which event the specified tests shall be made by the manufacturer or processor before shipment of the material.
S1. Vacuum Treatment
The steel shall be made by a process that includes vacuum degassing while molten. Unless otherwise agreed upon with the purchaser, it is the responsibility of the manufacturer to select suitable process procedures.
S2. Product Analysis
Product analyses shall be made for those elements specified or restricted by the applicable product specification for the applicable grade, class, and type. Specimens for analysis shall be taken adjacent to or from the tension test specimen, or from a sample taken from the same relative location as that from which the tension test specimen was taken.
S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons
Prior to testing, the test specimens representing thestructural product for acceptance purposes for mechanicalproperties shall be thermally treated to simulate a post-weld heat treatment below the critical temperature (Ac 3 ), using the heat treatment parameters (such as temperature range, time,and cooling rates) specified in the order. The test results for such heat-treated test specimens shall meet the applicable product specification requirements.
S4. Additional Tension Test
One tension test shall be made from each unit plate rolled from a slab or directly from an ingot, except that for quenched and tempered plates, a test shall be taken from each unit plate heat treated. The results obtained shall be reported on the mill test reports when such tests are required by the order.
S5. Charpy V-Notch Impact Test
- Charpy V-notch impact tests shall be conducted in accordance with Specification A 673/A 673M.
- The frequency of testing, the test temperature to be used, and the absorbed energy requirements shall be as specified on the order.
S6. Dropweight tests
Drop-Weight Test (for Material 0.625 inch and over in Thickness)
Drop weight tests shall be made in accordance with Test Method E 208. The specimens shall represent the material in the final condition of heat treatment. Agreement shall be reached between the purchaser and the manufacturer or pro-cessor as to the number of pieces to be tested and whether a maximum nil-ductility transition (NDT) temperature is man-datory or if the test results are for information only.
S7. High-Temperature Tension Test
Generally refers tohigh temperaturetensile testata constant temperaturebelow1100 ℃,predeterminedloading rate,that issinglecarriermodeforthetensile test.
S8. Ultrasonic Examination
The material shall be ultrasonically examined in ac-cordance with the requirements specified on the order.
S9. Magnetic Particle Examination/Magnetic particle inspection
Magnetic particle Inspection (MPI) is a nondestructive testing (NDT) process for detecting surface and slightly subsurface discontinuities in ferromagnetic materials such as iron, nickel, cobalt, and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object, but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to the direction of the electric current which may be either alternating current (AC) or some form of direct current (DC) (rectified AC).
S10. Ultrasonic Examination in accordance with Speciﬁcation A 577/A577M
S12. Ultrasonic Examination in accordance with Speciﬁcation A 578/A578M
S12. Bend Test
S15. Reduction of Area Measurement
The reduction of area, as determined on the 0.500-in.[12.5mm] diameter round tension test specimen in accordance with Methods and Definitions A 370, shall not be less than 40 %.
S17. Vacuum Carbon-Deoxidized Steel
S18. Maximum Tensile Strength
Steel having a specified minimum tensile strength of less than 70 ksi [485 MPa] shall not exceed the minimum specified tensile strength by more than 30 ksi [205 MPa].
Steel having a minimum specified tensile strength of 70 ksi [485 MPa] or higher shall not exceed the minimum specified tensile strength by more than 25 ksi [170 MPa].
S23. Copper-Bearing Steel (for improved atmospheric corrosion resistance)
The copper content shall be a minimum of 0.20 % on heat analysis, 0.18 on product analysis.
S26. Subdivided Material—Marking of Individual Pieces
Subdivided pieces shall be individually identified by marking, stenciling, or die stamping the applicable product specification designation (yeardate not required), grade, heat number, and the heat treatment identification, if applicable, along with the trademark, brand, or name of the organization that subdivided the structural product. As an alternative, individual subdivided pieces shall be identified by a code traceable to the original required identification, provided that the trademark, name, or brand of the organization that subdivided the structural product is also placed on the structural product and the original required identification, cross refer-enced on the code, is furnished with the structural product.
S27. Restrictive Plate Flatness
Asrolled or normalized carbon steel plates ordered to restrictive flatness shall conform to the permitted variations from a flat surface given in Table S27.1 or Table S27.2, whichever is applicable.
As-rolled or normalized high-strength low-alloy steel plates ordered to restrictive flatness shall conform to the permitted variations from a flat surface given in Table S27.3 or Table S27.4, whichever is applicable.
S28. Fine Grain Practice
The steel shall be made to fine grain practice.
S29. Fine Austenitic Grain Size
The requirements for fine austenitic grain size (see 8.1and 8.3) shall be met.
S30. Charpy V-Notch Impact Test for Structural Shapes:Alternate Core Location
For shapes with a flange thickness equal to or greater than 1 1 ⁄ 2 in. [38.1 mm] that are specified in the purchase order to be tested in accordance with this supplementary require-ment, Charpy V-notch impact tests shall be conducted in accordance with SpecificationA673/A673M, using specimens taken from the alternate core location. Unless otherwise specified in the purchase order, the minimum average absorbed energy for each test shall be 20 ft•lbf [27 J] and the test temperature shall be 70 °F [21 °C].
The frequency of testing shall be Frequency (H), except that, for rolled shapes produced from ingots, the frequency shall be Frequency (P) and the specimens shall be taken from a location representing the top of an ingot or part of an ingot used to produce the product represented by such specimens.
S31. Maximum Carbon Equivalent for Weldability
Plates and shapes shall be supplied with a specific maximum carbon equivalent value as specified by the pur-chaser. This value shall be based upon heat analysis. The required chemical analysis as well as the carbon equivalent shall be reported.
The carbon equivalent shall be calculated using the following formula: CE 5 C 1 Mn/6 1 ~Cr1 Mo 1 V!/5 1 ~Ni 1 Cu!/15
For additional information on the weldability of steel,see Appendix X3.
S32. Single Heat Bundles
Bundles containing shapes or bars shall be from a single heat of steel.