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[MW:1445] Re: GOST 1050-88 CT 3

By Materials & Welding
Hi,
I worked in Russia and hope to share some info with you. The problem
is that Russian standards and specifications are different from ASTM:
There are different GOSTs for different products for the same CT-3
steel.

Steel CT-3 is no longer listed in GOST 1050-88, it is now listed in
GOST 14959-79 which is a product specification for Carbon and Alloyed
Spring Rolled Steel.

In addition, the same steel is listed in various product
specifications:
GOST 535-88 for round bars and shapes.
GOST 14637-89 for plates and sheets.
GOST 8479-70 for forgings.

Typical chemical composition for CT 3 (killed) is: C (0.14-0.22), Si
(0.15-0.30), Mn (0.40-0.65)
Mechanical properties: YS 225-245 MPa min, TS 370-480 MPa min, A
22-26% min (depending on the product thickness). So, it is very close
to A-36.

Hope, it is helpful
aior
Oregon, USA


On Dec 16 2008, 5:54 pm, bagesh....@gmail.com wrote:
> GOST 1050-88 CT-3: Carbon structural quality steel gauged bars with
> special surface finish. General specifications [Replaced By: GOST
> 14959]: Carbonaceous and Alloyed Spring Rolled Steel Specifications
> Incorporates Amendment 1: 11/1982, Amendment 2: 12/1985, Amendment 3:
> 12/1986, Amendment 4: 06/1987, Amendment 5: 01/1989, and Amendment 6:
> 02/1993 [Replaced: GOST 1050] The said standard has been replaced with
> GOST 14959: in which the Grade of Steel you desired is CT3(Russian):
> ST3(English) steels, general purpose steel for Structural steel usage,
> It comes in Various profiles known as Russian steel Profiles, the
> chemical composition of this material is almost same except that of
> Carbon content which is less than that of A36, and it can be used up
> to -70 deg C with impact testing, but before using I would suggest you
> to confirm its Yield strength and tensile strength by comparing the
> percentage elongation.
>
> KUMAR BAGESH
>
> On Dec 16, 6:07 pm, Kim <shihyue...@yahoo.com> wrote:
>
> > What is GOST 1050-88 CT 3? Is it equivalent to ASTM A36?

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