JIS G 4801 PDF

JIS G is standard which specified the spring steel mainly used for the hot formed springs such as the laminated springs, coiled springs. The symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD. See the chemical composition and physical properties of JIS G Grade SUP9A, find alternative materials, and connect with suppliers.

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The Formation of Martensite. However, it does not have sufficient thermal sag resistance. A wire used y the production of the compression ring of the present invention is produced by melting steel SUP10 having a composition comprising by mass 0.

Further, not only excellent characteristics but also 44801 competitiveness are required on automobile parts such as piston rings. Thus, for the same compression rings, proper surface treatments may be selected depending on sliding mate members, use environment, etc.

About Our Company Otai Special Steel was established in to provide a wide range of high quality steel to the global market. The preferred average particle size is 0. The results are shown in Table 2 and FIG. In Examples 1, 4 and 5, and Comparative Examples 1, 2 and 5, the thermal conductivity was measured by a laser flash method.

Share on LinkedIn Share. The temperature and time period of the oil-tempering treatment jks an oil quenching step and a tempering treatment step should be set such that all spheroidal carbides are not dissolved, namely, the spheroidal carbides have a preferred area ratio.

Compression ring and its production method. All peripheral surfaces in Comparative Examples were coated with CrN, side surfaces in Comparative Example 3 were coated with zinc phosphate, and side surfaces in Comparative Jiz 4 were coated with manganese phosphate. Because stress is concentrated on the spheroidal cementite, it is considered as a factor of decreasing the mechanical properties of steel wires. Because the thermal conductivity is mainly determined by the movement of free electrons in crystal grains of metals, higher thermal conductivity is obtained with fewer solid solution elements.


Spring steel superior in workability. What is claimed is: We pride ourselves on our impeccable quality and service. However, higher compression ratios generally elevate combustion chamber temperatures, so that knocking easily occurs. A compression ring consisting of a composition consisting of by mass 0.

The batch treatment is inserted between continuous treatments in a conventional production line, inevitably resulting in lower productivity. The questions will be reply in 24 hours.

The spheroidal cementite preferably has an average particle size of 0. Despite many huge merger deals in the industry, we remain a friendly, family business. For environmental protection, automobile engines are recently designed to have 48001 fuel efficiency, low emission and high power, so that engines tend to have high compression ratios and high load.

JIS G, for Spring Steels – Otai Special Steel

Share on Google Plus Share. Image analysis conducted in the same manner as in Example 1 on scanning electron photomicrographs of the wire structures revealed that the spheroidal cementites in Examples 4 and 5 had average particle sizes of 0. Of course, a nitriding treatment is also usable. The above composition is basically a steel composition identified by the material number of SUP10 according to JIS Ghaving high thermal conductivity because of a small total amount of alloying elements, though it comprises small amounts of Cr and V.

SUP9A steels, Highlight the advantage is good hardenability, another hot working performance, comprehensive mechanical properties. Wear resistant sintered member and production method therefor.


Alloy to be surface-coated and sliding members. Search Expert Search Quick Search. To lower the temperature of combustion chamber walls, it is effective to lower the temperature of piston crown surfaces. Decarburization resistance is also good big cross section of various important spring, such as automobile, locomotive, large plate spring, spring, etc.

Of course, surface treatments such as plating, PVD, etc. Share on Facebook Share. SUP9A Spring main used for heavy vehicles, tractors, industrial production load, stress and the diameter of the larger plate spring and helical spring. Also, the temperature of ring grooves of an aluminum piston can be lowered, suppressing microwelding and wearing of the ring grooves.

Process for setting the thermal conductivity of a steel, tool steel, in particular hot-work steel, and steel object. In view of this, the temperature of ring grooves should be lowered by using high-thermal-conductivity compression rings. Each rectangular cross-sectioned wire of 1. Gear part and method of producing thereof.


When the microwelding occurs, the torque of a rotating shaft 2 changes, accompanied by temperature elevation. High-hardness, high-toughness steels and crawler components, earth wear resistant components, fastening bolts, high-toughness gears, high-toughness, high contact pressure resistance gears, and wear resistant steel plates using the 48001.

Alloying elements 1 and thermal conductivities of steels for piston rings. Ground Spring Steel bar can be supplied, providing a quality precision finished bar to 48011 tolerances. SUP9A steel stockholders and suppliers from china.