We would like to introduce our type 630 tubes (1.4542 tubes) and type 630 rings (1.4542 rings) manufactured by centrifugal casting technique again in this article. 

Type 630 is 17-4PH (CB7Cu-1, 1.4542, X5CrNiCuNb16-4) actually and we say type 630 instead of 17-4PH more often in Taiwan.  Lots of customers inquired us “ The type 630 tubes are 17-4PH tubes?” “630 means 17-4PH?”  The answer is “ Yes!”

In order to make customers find the information of the type 630 tubes (1.4542 tubes) and type 630 rings (1.4542 rings) easily, we would like to introduced our type 630 centrifugally cast products again here. 

 

 

Type 630 tubes (1.4542 tubes) manufactured by centrifugal casting at LAWAI INDUSTRIAL CORPORATION

Type 630(17-4PH) is the precipitation hardening stainless steel. Type 630 stainless steel is not used often in Taiwan, however there are a lot of applications using type 630 tubes (1.4542 tubes) or type 630 rings (1.4542 rings) in U.S.A. and Europe. 

Fifteen years ago, we started to manufacture the type 630 tubes (1.4542 tubes) and type 630 rings (1.4542 rings) by centrifugal casting technique for oil and gas industry.  At that time, the customer asked as to produce the type 630 tubes (1.4542 tubes) and type 630 rings (1.4542 rings) by centrifugal casting based on forging specification and asked us to meet the standards that are higher than the ones on forging specification ASTM A564 Type 630 H1150.  A good news was our centrifugally cast type 630 tubes (1.4542 tubes) and type 630 rings (1.4542 rings) were approved and met the forging specification no matter which third party did the inspection.

Therefore, type 630 tubes (1.4542 tubes) manufactured by centrifugal casting could be regarded as our top material. 

 

The standards on ASTM A564 Type 630 H1150 are showed in the table below. 

Tensile strength	Yield strength	Elongation %	Hardness
135 ksi	105 ksi	16	28 HRC

 

 

The pros of type 630 tubes (1.4542 tubes) produced by centrifugal casting at LAWAI 

1.     Seamless and non-porosities 

2.     The dimensions are customized 

3.     Hollow and no need extra machining 

4.     The mechanical properties equal to the ones on forging specifications 

5.     Approval by top 3 oil & gas company in U.S.A.

 

The comparison between type 630 tubes (1.4542 tubes) and 316 tubes produced by centrifugal casting 

In the previous paragraph, we mentioned that type 630 stainless steel is the common material in the industries of U.S.A. and Europe.  However, it is not used often in Taiwan.  Thus, we did the comparison between type 630 tubes (1.4542 tubes) and 316 tubes manufactured by centrifugal casting on the table below. 

From the table, the strength and hardness of type 630 tubes (1.4542 tubes) are far higher than 316 tubes.  And the proportions of Cr and Ni are high of both chemical compositions, thus the corrosion resistance of type 630 tubes (1.4542 tubes) and 316 tubes are good.  For applications, type 630 tubes (1.4542 tubes) are used as key blank material of the highly valuable components in oil & gas, aerospace and green energy industries.  However, the 316 tubes are applied in the environment for resisting corrosion resistance a lot.

 

	Type 630 tube (1.4542 tube)（H1150）	316 tube
Chemical composition	Cr 15~17.5 Ni 3~5	Cr 17~21 Ni 9~13 Mo 2.75
Tensile strength	>150 ksi	90 ksi
Yield strength	>140 ksi	38 ksi
Hardness	>276 HB	179 HB
Applications	Oil & gas, aerospace …etc.	Various components in corrosive environments Ex: Valve rings, decanter components…etc.

 

Type 630 tubes (1.4542 tubes) applied in green energy industry

Energy transfer is the initial idea for many equipment in green energy industry. 

The movement or rotation by high speed of critical components for producing electricity would need high hardness, high strength and corrosion resistance material. Type 630 tubes (1.4542 tubes) produced by centrifugal casting are the candidate for those key components. 

 

Type 630 tubes (1.4542 tubes) applied in oil & gas industry 

Extracting oil downward must relate to depth.  The high depth means high pressure. Therefore, the components for digging must be high strength and good corrosion resistance.  The type 630 tubes (1.4542 tubes) produced by centrifugal casting at LAWAI are with both high strength and excellent corrosion resistance.  Type 630 tubes (1.4542 tubes) produced by centrifugal casting is suitable for being as the blank material of oil & gas components.

 

Type 630 tubes (1.4542 tubes) applied in aerospace industry 

The pressure problems are resulted from high altitude, so the materials used in aerospace industry should be with both high strength and corrosion resistance. And type 630 tubes (1.4542 tubes) produced by centrifugal casting are with the characteristics.  Therefore, type 630 tubes (1.4542 tubes) and type 630 rings (1.4542 rings) manufactured by centrifugal casting are used broadly in aerospace industry. 

 

Type 630 tubes and type 630 rings by centrifugal casting could replace forged bars

If you are looking for the type 630 tubes (1.4542 tubes) with the diameter larger than 100 mm, the centrifugally cast 630 materials could be more competitive. 

If you have the demands of type 630 rings (1.4542 rings) that are good as forged rings, you will need to consider centrifugal casting first because it could save the machining cost for you .

 

The high class casting art- centrifugal casting would be your best material for your special applications! 

 

 

LAWAI INDUSTRIAL CORPORATION

No.1283-1, Ren-ai Road, Chunan Township, Miaoli County, Taiwan

+886-3-6581116

[email protected]

http://www.lawai-alloytube.com/