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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Grade and symbol The steel and coil shall be classified into 3 categories, and their symbols shall be as given in Table 1. When g31131 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.

A lot consist of 50 t or less of sheet of the same designation rolled to the same thickness and condition. Small cracks on the edges of test piece, and cracks not visible to the naked eye shall be disregarded. In the case, the report shall be in accordance with the requirements of clause 13 in JIS G Identical in technical contents.

JIS G – – Free Download PDF

Unless otherwise specified, no part of this publication may be reproduced or utilized g31311 any form or by any means, electronic or mechanical, including photocopying jiss microfilm, without permission in writing from the publisher.

V Justification for the technical deviation and future measures Tensile strength, elongation and bendability are specified. A list of modifications with explanations is given in Annex JA. The value shall be applied to the steel sheet v3131 strip under mm in width.

Note 1 Hot-Rolled sheet up to but not including 3 mm in thickness is commonly known as “sheet”. The minimum percentage ranges for elongation is from 27 to 31 percent starting from 1. In JIS, items related to quality are specified.


The portions with continuous sidelines or dotted underlines are the matters in which the content of the corresponding International Standard has been modified. Carbon and low alloy steels.

Appearance The appearance of the steel sheet and coil shall conform to 6. These are also extensively used in some of the automotive manufacturing, electric products, vehicles, aviation. The test method shall be as specified in JIS Z Chemical composition of Deletion four elements C, Uis, P, S and additional alloy elements are specified.

Chemical composition The steel sheet and coil shall be tested in accordance with 7. SPHC Steels are primarily used in pipe and tube manufacturing. g3113

JIS G3131 Grade SPHC commercial quality

The order number is a matter of contract and is deleted. Therefore we cannot say that yield and UTS are close, when steel is not absolutely brittle. What is the maximum temperature it can handle? The thickness shall be measured at any point on the steel sheet and coil not less than 20 mm from a side edge. A part of them is presented as given in Informative reference Table 1, accordingly. NOTE 1 The steel sheet and strip may be de scaled by pickling or shot blasting after the hot-rolling operation on request by the purchaser.

It is from 1. In the case of bend test, it shall bent without crack on the outside of the bent portion. Steel sheets and strips de scaled by acid pickling or shot-blasting shall be oiled.

Leave a Reply Cancel reply. Chemical composition of four elements C, Mn, P, S are specified. 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: Inspection observed by the purchaser is specified.


SPHC steel is a commercial quality hot rolled steel. The steel sheets which are not bundled shall be marked for each sheet. 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.

This Annex may be applied instead of the requirements specified in 1.


For steel sheet excluding cut lengths thereof One test piece each for tensile and bend tests shall be taken from each test lot of the same jls where the maximum thickness of the steel sheet is g31331 twice the minimum thickness thereof. The elongation property of SPHC steel varies with the ranges of thickness. Chemical composition The chemical composition cast analysis shall not exceed the value given in Annex Table 1. The appearance shall conform to the requirements specified in clause 8.

No item For addition of the specification of the report, proposal will be submitted to ISO. Drawing qualities quality HR2 – drawing quality HR3 -deep drawing quality HR4 – deep drawing quality special killed 1.

Modification of the tensile direction will cause the confusion in the marketo This is the unique configuration to JIS. X If necessary, the treatment of irregular portions of steel strip may be agreed between the manufacturer and the purchaser.

Chemical composition of JIS G 7. Prolonged storage of the sheet can cause a change in the mechanical properties increase in hardness and a decrease in elongationleading to a decrease in drawability.

In addition, the drawability of SPHE may be agreed between the purchaser and supplier.

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