JIS G3125 steel plate

JIS G3125 steel plate introduction: JIS G3125 steel plate is hot rolled steel product with resistance to atmospheric corrosion. The corrosion retarding effect of the protective layer is produced by the particular distribution and concentration of alloying elements in it. As a result, the layer protecting the surface develops and regenerates continuously when subjected to the influence of the weather. In other words, the steel rusts to form the protective coating.There are two types under JIS G3125 steel plate standard SPA-H and SPA-C material.

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Steel Properties

JIS G3125 steel plate chemical composition(%):

Grades	C	Si	Mn	P	S	Cr	Cu	Ni
SPA-H/SPA-C	≦0.12	0.25-0.75	0.20-0.50	0.07-0.15	≦0.04	0.30-1.25	0.25-0.60	≦0.65

JIS G3125 steel plate mechanical properties:

Grade	Thick (mm)	Yield stress (Mpa)	Tensile stress (Mpa)	Elongation (%)
SPA-H	t≦6.0	≧345	≧490	≧22
SPA-H	6<t≦16	≧345	≧490	≧15
SPA-C	t≦16	≧315	≧450	≧26

JIS G3125 steel plate equivalent grades:

JIS	EN	GB	ISO
SPA-H	S355J0WP (1.8945)	09CuPCrNi-A	Fe355W-1A

Application

JIS G3125 steel plate application:
JIS G3125 steel plate hot rolled steel plates having high atmospheric corrosion resistance can be used for vehicles, buildings, steel towers and other structures. The term "atmospheric corrosion resistance" means the property to withstand the corrosion in the atmosphere.

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