JIS G Hot-rolled mild steel plates, sheet and strip. SPHC max. max. max. max. min. 27min. 29min. 29min. 29min. 31min. 31min. Drawing. SPHD max. max. max. max. Code of type. Applicable thickness (mm). Applications. JIS G Hot-rolled soft steel sheet/strip. SPHC. or more, but no more than General use. SPHD.
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The commercial quality hot rolled steel is a type of steel that can be used commercially for forming purposes that can also include shearing of a metallic sheet. Care to your share your opinion?
The elongation property of SPHC steel varies with the ranges of thickness. The repair by welding shall not be performed. It is from 1.
Hot Rolled Steel (HR) – (SPHC、SPHD、SPHE)：JIS G3131
Adds the specification item s or content s which are not included in International Standard. Tensile strength and elongation are specified. Identical Identical 11 Marking Marking of five items is specified.
Grade and symbol The steel and coil shall be classified into 3 categories, and their symbols shall be as given in Table 1. Leave a Reply Cancel reply. Scope The Japanese Industrial Standard specifies the hot-rolled mild steel plates, sheets and strip hereafter referred to as “steel sheet and coil” intended for general fabrication purposes and drawing.
Maximum percentage of Carbon C is 0. In JIS there is no description of the inside diameter and the maximum outside diameter of the coil. A part of them is presented as given in Informative reference Gg3131 1, accordingly. Chemical composition The chemical composition cast analysis shall not exceed the value given in Annex Table 1.
Marking of seven items kis specified. To minimize this effect, quality HR4 should be specified. Analytical test is specified.
Hot Rolled Steel – JIS G Commercial Hot Rolled SPHC Steels
The corresponding International Standard of this Standard is given in the following: The mechanical properties shall conform to the requirements specified in clause 5.
Steel sheets and strips as rolled shall not be oiled. Hi there, could you advise on the silicon content percentage of ? When it is infeasible to alloy the center of the test piece to be at a quarter-width from a side edge, however, the sampling should be performed as close to the aforementioned position as possible. Chemical composition of Deletion four elements C, Mn, P, S and additional alloy elements are specified.
The thickness shall be measured at any point on the steel sheet and coil not less than 20 mm from a side edge.
When it is infeasible to allow the centre of the test piece to be at a quarter-width from a side edge, the sampling should be performed as close to the aforementioned position as possible. Chemical composition of four elements C, Mn, P, S are specified. In the case of bend test, it shall bent without crack on the outside of the bent portion. The chemical composition shall conform to the requirements specified in clause 4.
Hot-rolled mild plates, sheets and strips intended for general fabricating purposes and drawing are specified. For steel strip and cut lengths thereof One test piece each for tensile and bend tests shall be taken from each test lot of the same heat rolled to the same thickness.
When the mass of one test lot exceeds 50 t, however, two mis of test pieces shall be taken from the lot. The steel sheets which are not bundled shall be marked for each sheet.
The most recent editions of the standards including amendments indicated below shall be applied. X If necessary, the treatment of irregular portions of steel strip may be agreed between the manufacturer and the purchaser.
Modification of the tensile direction will cause the confusion in the marketo This is the unique configuration to JIS. A list of modifications with explanations is given in Annex H3131.
Unless v3131 specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Sampling position and direction of tensile test and bend test pieces The test piece shall be taken parallel to the rolling direction and the centre of the test piece shall be at a quarter-width from a side edge.
The test method shall be as specified in 9. The steel sheet and coil from which the scale has been removed after the hot-rolling operation by picking or grit blasting may be shipped on request by the purchaser.
The steel sheets which are not bundled shall be marked for each sheet. ji
JIS G Hot-roll mild steel plaates,sheet and strip_图文_百度文库
Inspection observed by jiz purchaser is deleted in JIS. The minimum percentage ranges for elongation is from 27 to 31 percent starting from 1. With this respects, the sampling method of specimen shall conform to Class A, and the number of test pieces and the sampling position shall be as following: Please read article completely. The roller does not only decrease the thickness of g33131 sheets but also changes the grain structure of the steels.
In the case, the report shall be in accordance with the requirements of clause 13 in JIS G Transverse test piece shall be taken midway between the center and edge of the sheet mis rolled.
Appearance of JIS G 7. When the mass of one test lot exceeds 50 t, however, two sets of test piece shall be taken from the lot. SPHC Steels are primarily used in pipe and tube manufacturing. I want know Raw material price per Kg below mention details 1. Deletes the specification item s or content s of International Standard.
V Justification for the technical deviation and future measures Content The report is specified.