Dikasa The pipes shall be tested pursuant to Table 10 and shall resist the guarantee pressure specified in Table m without leaving injurious deformation. Designation of products shall be pursuant to the standard number, type of tubing, and type and nominal diameter of outside surface. Inspection shall be conducted pursuant to the above 6 and the results shall meet requirements specified in the above 4. The test shall be conducted pursuant to corrosion test specified in Table 10 and shall meet requirements in Table 6.
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Scope This standard specifies the steel for automotive structurai uses hereinafter referred to as "steel". The steel specified here includes the hot rolled steel and the cold finished steel processed such a secondary operation as "drawing". Remark: Attached table 1 shows applicable standards of this standard. Classifications and designations Classifications and designations of the steel shaii conform to those in Table 1. The permissible deviation shall be determined as agreed upon between the purchaser and the manufacturer.
S30C, S33C. S35C S38C. ASBo40 0. Ni max. Remark: Acceptance of those materials in which Silicon content is under 0. Add itive symbol P S Pb Ca. Remarks: 1 This table shows only chemical compositions which are added or changed to the basic ones to each type of machinability-improved steel.
In case of P and S, the figure in the table shows the value to which specified values of the basic steel is to be changed. The chemical composition of the complex addition steel shall consist of combinations of those in the table.
When reporting the lead content, it may be shown by the range of 0. The steel shall be tested according to 5. Further, each hardenability band is shown in Reference attached fig. Further, remarkable mixed grains shall not be existed. Mean heat treated grain size No. For carburizing For quenching and tempering 2 The grain size of lead addition steel shall be the same as that of the basic steel type. The grain size of Sulfur addition steel, Calcium additon steel and complex addition steel shall be determined as agreed upon between the purchaser and the manufacturer.
However, as to machinability-improved steel, it shall be determined as agreed upon between the purchaser and the manufacturer, Table 7 Cleanliness 0. However, as to those wire rods the diameters of which are over 32 mm, they shall be as agreed upon between the purchaser and the manufacturer. As t o the heat treated steel, it shall be as agreed upon between t h e purchaser and the manufacturer.
The rules for rounding o f f o f numerical values shall be in accordance with JIS Z The tolerance on length shall be applied t o the case when steels are cut to a designated length and the case when steels are cut t o a multiple of a designated length. The tolerance shall be designated b y the purchaser selecting a grade from the table.
However, if necessary, those grades which are beyong the range specified in t h i s table may be determined under t h e agreement between the purchaser and the manufacturer. Table 14 Tolerance and deviation on wire rod diameter Unit: mrn Diameter 5. The section of the steel bar shall be free from harmful burrs and cracks for usage. In case of those steel bars not specified here, it shall be as agreed upon between the purchaser and the manufacturer.
The delivery of those materials in which forging ratio is less than 4s shall be as agreed upon between the purchaser and the manufacturer. If designated by the purchaser, the designated heat treatment shall be proceeded. Process annealing may be proceeded according to i t s necessity. Further, if designated by the purchaser, the designated heat treatment shall be proceeded before the final working. To the depth not exceeding 5 mm on all nominal size of and over.
Removal of discontinuities may not be necessary in principle. T o the depth not exceeding 0 3 from the surface. Test 5. Chemical analysis. Sampling method of test specimen for analysis. Mechanical property and type B as t o the selectioned of the sample and test pieces. Inspection The inspection is as follows: 1 The general requirements of the inspection shall be in accordance with JIS G However, their specified values and the criteria for acceptance or rejection shall be as agreed upon between the purchaser and the manufacturer.
Product analysis inspection, Mechanical property inspection, Magnetic particle inspection, Ultrasonic inspection, Macroscopic examination, Decarburized depth inspection, Macro-streak-flaw inspection, Hardenability inspection Boron steel except H-steel , Su Ifur print inspection, Microscopic structure inspection. Marking The marking shall be as follows: 1 On each steel the marking shall be done on those items with a circle in Table 16 by a suitable method.
However, some items may be omitted when agreed upon by the purchaser. Steels as rolled may not be particularly marked. When more than two coils are bundled, the marking of number of coils or mass by each coil may be omitted, if it is marked on the bundle. Report The manufacturer shall report following items in a form of document for every delivery lot of the steel. However, a part or all of it may be omitted when agreed upon by the purchaser.
Hardenability diagram of H-steel SCrH 45 40 35 30 25 20 15 10 O 1. Introduction Those items which were reviewed on the accasion of the revision a t this time are as follows. Type and designation Type 1 The basic steel type shall consist of 83 types, which is the same as previous ones. However, the standardization is left over, since the actual result of production and the actual status of applications have not been laid hold of.
Further, the outline of the designation is shown in Explanatory teable 1. Quality requirements Assurance of chemical composition 1 As to the assurance of chemical composition, there is a strong request of the standardization by using such a system as so called "steel analysis" which is not such an "intermediate characteristic value" as "cast analysis", but will assure all chemical composition through the steel.
On the other hand, there is also a counterarguement saying that "cast analysis" is the most proper representative on chemical composition of one heat, therefore, the deviation should be assured as "permissible deviation value" from the specified limit. Since no future progress i s expected under this situation, it is necessary t o discuss what should be on the assurance of chemical composition reviewing the worldwide trends.
However, it is concluded not t o specify as in the past and it shall depend on the agreement between the purchaser and the manufacturer. As t o Calcium addition steel, it shall be as agreed upon between the purchaser and the manufacturer. There was again the same proposal t o specify it as 0.
Further, as t o the Boron content value, which one of sol-B or total-B was discussed t o be used. It was concluded t o specify by using total-B value as well as in other chemical compositions, for the reason that all major standards inside or outside Japan apply total-B value and there is no standard on the method of sol-B analysis in JIS.
How much the lower limit is to be, is a future subject and it shall only be noted in the remark. As t o the upper limit of 0. This time, cleanliness is set up excluding machinability-improved steels as exceptions.
Further, the residual magnetism of the steel requires t o be kept low enough to prevent chip from sticking while machining.
However, the standardization are passed out because of the magnetic creation during transportation of the steel and no availability of a simple measuring method. Permissible depth of discontinuities The surface quality of the steel has been discussed in every revision of the standard and the standardization is agreed upon according t o the establishment of inspection methods of the discontinuities and their stabilized operations a t the steel manufacturers, being determined to specify as "to the depth not exceeding 0.
Further, as to class 3 and class 4, they shall be as agreed upon between the purchaser and the manufacturer, considering the examples applied. Excluding those with same content as JIS. In case o H-steel, it shall be coded b y the base steel type.
JASO M101 PDF
Gugal Inspection shall be conducted pursuant to the above 6 and the results shall meet requirements specified in the above 4. Copper and copper alloy seamless pipes haso tubes C or C Tubing mainly for air brakes 2. The welded low carbon steel pipes shall be made by copper coating both surfaces or inner surface of Jaos specified in JIS Gshaping them into a tubular form, and sealing the edges by electric resistance welding, however inside surface, may not be copper jado if mutually agreed upon by the purchaser and the manufacturer. When jasl plates are pressed, the weld of tube shall be placed at 90 degrees to the direction of applied force. The pipes shall be tested pursuant to Table 10 and shall resist the guarantee pressure specified in Table 8 without leaving injurious deformation. Example if any flaws, cracks, or other defects occurred or not when the pipe was bent degrees around a cylinder having the radius as specified below.
自動車JASO M 101-94のための二重/単一の壁の精密鋼鉄管
Yole Examine if any leak of other defects occurred or not when pipe is applied with specified hydraulic pressure and held for 5 minutes. When the plates are pressed, the weld of tube shall be placed at 90 degrees to the direction of applied force. The pipes shall be tested pursuant to Table 10 and shall resist the guarantee jqso specified in Table 8 without leaving injurious deformation. The welded low carbon steel pipes shall be made by copper coating both surfaces or inner surface of SPCC specified in JIS Gshaping them into a tubular form, and sealing the edges by electric resistance welding, however inside surface, may not be copper coated if mutually agreed upon by the purchaser and the manufacturer. Pursuant to JIS H Guarantee pressure test Examine if any leak of other defects occurred or not when pipe is applied with specified hydraulic pressure and held for 5 minutes.