stainless steel 316 TP316Ti S31603 tubes pipes EN 10216-5 1.4571 Stainless Steel Tubing piping

stainless steel 316 TP316Ti S31603 tubes pipes EN 10216-5 1.4571 Stainless Steel Tubing piping

Type: ASME SA 213 UNS S31603 ,EN 10216-5 1.4571

Key words

316Ti tp316Ti pipes, 316Ti tp316Ti tubes,316Ti tp316Ti piping,316Ti tp316Ti tubing,Stainless steel 316Ti tp316Ti pipes ,stainless steel 316Ti tp316Ti piping, stainless steel 316Ti tp316Ti tube ,stainless steel 316Ti tp316Ti tubing,stainless steel s31603 tubes pipes,stainless steel s31603 tubing piping,Stainless steel seamless 316Ti tp316Ti tubes pipes,EN 10216-5 1.4571 tubes pipes,ASTM A213 S31603 TP316Ti tubes pipes,316Ti tp316Ti industrial tubes pipes,316Ti tp316Ti precision tubes pipes,316Ti tp316Ti bright annealing tubes pipes,316Ti tp316Ti capillary, tp316Ti 31603 stainless steel needle tubing,ASTM A632 standard tp316Ti s31603 capillary tubing, ASTM A213 A312 A269 standard stainless steel 316Ti s31603 tubing ,

Introduce of tinsi-steel

Wenzhou TINSI Stainless Steel Co., Ltd is one of the leaders manufacturer & stockist & exporters in stainless steel Pipes &Tubes.our team professional more than 20 years focus on manufacturing stainless steel tubes&pipes and Duplex steel tubes&pipes and Nickel alloy steel tubes&pipes in industrial pipes, precision pipes, sanitary pipes, capillary and needle pipe.

Our company and warehouse in Wenzhou，factory of industrial pipes moved to Songyang,in the stainless steel pipes&tubes that production and sell all control by self,Advanced technology and excellent quality with more than 1200 tons ready stock of industry pipes,offer best price with best services has made TINSI company a true performer in the market domestic.

in 2019，we start foreign business and believe keep always competitiveness that TINSI company will be a reliable partner for worldwide clients.In this new beginning, relying on the advantages of Wenzhou Stainless Steel Base, we also supplies various of stainless steel rods, plates, elbow tees, fittings, flanges, valves and other equipment supporting products for service better and convenient client.

Introduce：

ASME SA213 / ASTM A213 316Ti UNS S31603, EN 10216 - 5 1.4571 Stainless Steel Similar to Grade 316L except that 316Ti has better high temperature strength, and mechanical strength. Used for equipment exposed to aggressive corrosive conditions and high temperature applications,including automotive flexible connectors, welded bellows, chimney liners, and flexible ducting.

Type 316Ti is an improved corrosion resistant Chrome-Nickel steel alloy with high content of Molybdenum and some Titanium. It is not a typical free machining grade and therefore not recommended for difficult high speed machining process.Grade 316Ti stainless steel has been traditionally specified by German engineers and users with the Workstoff number 316Ti.

316Ti Stainless Steel is essentially a standard carbon 316 type with titanium stabilisation and is similar in principle to the titanium stabilisation of the 304 (1.4301) type to produce 321 (1.4541). The addition of titanium is made to reduce the risk of intergranular corrosion (IC) following heating in the temperature range 425-815C.The addition of titanium reduces the risk of IC since titanium carbo-nitrides are formed in preference to chromium carbides which has the effect of maintaining the correct distribution of chromium throughout the structure of the steel.

The weldability of the 316Ti and 316L can be assumed to be similar. Neither of the grades can be expected to weld 'easier' or 'better' than-the-other. Niobium stabilised fillers (welding consumables) should be used for welding the 316Ti, especially where elevated temperature weld strength may be important. In other circumstances a '316L' filler should give a matching weld metal aqueous corrosion resistance to that of the 'parent' '316Ti' material.

316Ti Stainless Steel Tubing Intergranular Corrosion

When austenitic stainless steel pipe are subject to prolonged heating in the temperature range 425-815C, the carbon in the steel diffuses to the grain boundaries and precipitate chromium carbide. This removes chromium from the solid solution and leaves a lower chromium content adjacent to the grain boundaries. Steel in this condition are termed 'sensitised'. The grain boundaries become prone to preferential atack on subsequent exposure to a corrosive environment. This type of corrosion is known as intergranular corrosion , also known in the past as 'weld decay'.

The result is that areas adjacent to grain boundaries, where the carbonitrides form, is not depleted of chromium to a level at which localised corrosion can occur in the grain boundary area.

The alternative approach to reducing the risk of Intergranular Corrosion attack is to reduce the carbon level to below 0.03%. In this way a grade of 316 is produced with, in practice, the same resistance to Intergranular Corrosion as 316Ti (S31635 / 316Ti) . This is the basis of the 316L types (S31603/1.4404).

Table. Chemical Composition of tinsi-steel 316Ti EN 1.4571

Is 316Ti interchangeable with 316L?

Under most conditions it can be taken that the two grades are interchangeable, 316L (S31603 / 1.4404) being suitable for applications where 316Ti (S31635 / 1.4571) is specified. In aqueous corrosion media or environments at ambient temperatures, there is no practical advantage in specifying the 316Ti type in preference to the 316L. In some circumstances the 316L (1.4404 ) grades may be better choices.

316Ti Stainless Steel Tubing Mechanical Properties

The presence of titanium to 316Ti does, however, give some improvements to mechanical strength, especially, at elevated temperatures above about 600 C. and care must therefore be exercised in selecting 1.4404 as a substitute under these conditions. The 316Ti may however have inferior impact properties at ambient temperatures, compared to the 1.4404 / 1.4432 types.

316Ti Stainless Steel Tube Machinability

The machinability of 316Ti can also be an issue as the titanium carbo-nitrides particles can result in higher tool wear and may not cold form or cold head as readily as the 1.4404 / 1.4432 types.

316Ti Stainless Steel Tubes Polishing

The titanium carbo-nitrides in 316Ti can also result in problems where high standards of polished surface finish are required. The titanium carbo-nitrides particles can result in 'comet-tail' streaks on the polished surface as they are dragged out during polishing. This is similar to the 1.4541(321) grade, which was not recommended for a 'No8' bright mechanical polish in now obsolete BS1449 Pt2 (now replaced by BSEN 10088:2-1995 finish 1P/2P).

316Ti Stainless Steel Pipe Corrosion Resistance

There is also some evidence that the 316Ti type may have inferior pitting corrosion resistance and stress corrosion cracking resistance, compared to the 316L types, although the general corrosion resistance can be assumed to be generally similar. The titanium stabilised 316Ti grade may also be prone to 'knife line attack' in the heat-affected zones of welds, very close to the fusion zone where the carbo-nitrides have redissolved in the solid steel matrix.

Due to its superior Corrosion resistance, it has been used in handling many of the chemicals used by chemical process industries.  It is more resistant to pitting Corrosion than typical 18-8 alloys for optimum corrosion resistance, surface must be free of scales and foreign  particles.  Parts should be passivated.

316Ti Stainless Steel Tubing Weldability

The weldability of the 316Ti Stainless Steel and 316L Stainless Steel can be assumed to be similar. Neither of the grades can be expected to weld 'easier' or 'better' than-the-other. Niobium stabilised fillers (welding consumables) should be used for welding the 316Ti, especially where elevated temperature weld strength may be important. In other circumstances a '316L' filler should give a matching weld metal aqueous corrosion resistance to that of the 'parent' 316Ti '316Ti' material.

316Ti Stainless Steel Tubing Applications:Automotive, high temperature and

316Ti EN 1.4571 Tube Inspection of TINSI-STEEL

Dimension & Visual Examination

Surface Roughness Test

Tensile Test

Flaring Test

Flattening Test

Metallographic Inspection

Hardness Tests(general choose one among)

Brinell Hardness Test.

Vickers Diamond Hardness Test.

Rockwell Hardness Test.

Non-destructive Tests (general choose one among)

Hydrostatic Testing.

Ultrasonic Testing

Eddy-Current Testing