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Fully Annealed Automotive Stainless Steel Tubing 6096mm Length High Hardness

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Fully Annealed Automotive Stainless Steel Tubing 6096mm Length High Hardness

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Brand Name : SPEZILLA

Model Number : SMLS

Certification : ISO9001, TS16949, PED, AD2000

Place of Origin : CHINA

MOQ : 500KGS

Price : NEGOCIATION

Payment Terms : T/T, L/C

Supply Ability : 100TONS/MONTH

Delivery Time : Ex-Mill 15 - 30DAYS

Packaging Details : WOODEN BOXED

Material Grade : TP444

Product Name : TP444 Ferritic Steel Alloy Tube

Test Certificate : EN10204 3.1

Specification : ASTM A268 ASME SA268

Size Range : 5/8"-2"

WT : BWG18-BWG12

Length : 6096mm

Finishing Options : Pickling, Polishing, Custom Cutting

Packaging : Wooden Box, Bundled, Export Packaging Available

Application : Boiler,Heat Exchanger

Shape : Round

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ASME SA268 Type 430Ti, 439 and 441 Ferritic Stainless Steel Tube Fully Annealed

Type 430Ti, 439 and 441) Ferritic Stainless Steel

Having better weldability and formability characteristics than Group 2 ferritic sheets of steel, Group 3 steel can be used to replace austenitic type 304 austenitic in a wider range of applications, including in sinks, exchange tubes, exhaust systems and welded parts of washing machines.


Type 441 Stainless Steel is a ferritic stainless steel which provides good high-temperature strength (exceeding that of Types 409 and 439 Stainless Steels) plus good corrosion resistance in many exhaust gas environments (equivalent to Type 439 and 18 Cr-Cb Stainless Steels). . Ferritic steels are not inherently strong at elevated temperatures, but columbium additions coupled with appropriate solution annealing markedly improve long-time creep rupture strength. Type 441 is dual stabilized with niobium and titanium to provide good weld ductility and resistance to intergranular corrosion in the weld heat affected zone.

TP430 is a typical martensitic chromium-alloy steel grade. It does not have the nickel content and owns the following characteristic:

- Harding by heat treatment
- High hardness with good ductility
- Good corrosion resistance capability
- Good wear corrosion resistance
- High cold-deformation property

Typical applications for 430 grade include:

  • Linings for dish washers
  • Refrigerator cabinet panels
  • Automotive trim
  • Lashing Wire
  • Element Supports
  • Stove trim rings
  • Fasteners
  • Chimney Liners

Heat Treatment

  • Solution Annealing – Heat to 815-845°C, hold for ½ hour per 25mm of thickness, slow furnace cool to 600°C and then quickly air cool. Slow cooling from 540-400°C will cause embrittlement.
  • Sub-Critical anneal – Heat to 760-815°C and then air cool or water quench.
  • This grade is not hardenable by thermal treatment.

Welding

  • Pre-heat at 150-200°C if welding is necessary.
  • Embrittlement in the weld metal and heat affected zone can be relieved by a post-weld anneal at 790-815°C
  • Grain refinement will not occur.

Machining

  • Easier to machine than the standard austenitic grades such as 304.
  • Still a tendency for galling and pick-up on the cutting tool.
  • Bars that have been lightly drawn are easier to machine than those in the annealed condition.
  • Grade 430F, the free machining version of 430, is very much easier to machine.

Fabrication

  • Lower work hardening rate makes bending and forming somewhat easier than for grade 304
  • Lower ductility restricts very severe operations.
  • Severe bends should be made with the bend axis at right angles to the rolling direction.
  • Severe cold heading of 430 wire is possible.

Item Code: TP430
Tube OD.: 1/4'' - 2''
Wall: 0.028'' - 0.120''
Length: 20FT
Material: 430 441
Standard: ASTM A268 ASME SA268
Finish: Annealed & Pickled.
Type: Seamless Cold Drawn
Certification: ISO9001:2015
Mill Test Certificate: EN10204 3.1
Packing:

Sleeved, Wooden Boxed

5% Test
Solution at 120°F
(49°C)		 Corrosion Rate in Mils per Year and Millimeters per Year (mm/a)
Alloy 409 Alloy 410S Alloy 420 Alloy 425 Mod Alloy 440A Alloy 430
Acetic Acid 0.88
(0.022)		 0.079
(0.002)		 1.11
(0.028)		 4.79
(0.122)		 2.31
(0.0586)		 0.025
(0.0006)
Phosphoric Acid 0.59
(0.002)		 0.062
(0.002)		 0.068
(0.002)		 0.593
(0.015)		 0.350
(0.009)		 0.029
(0.001)

ASTM A268 Tp410 tube composition:

Grade: TP405 TP410 TP249 TP430 TP443 TP446-1 TP446-2 … TP409
UNS S40500 S41000 S42900 S43000 S44300 S44600 S44600 S40800 S40900
C, max 0.08 0.15 0.12 0.12 0.20 0.20 0.12 0.08 0.08
Mn,max 1.00 1.00 1.00 1.00 1.00 1.50 1.50 1.00 1.00
P, max 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.045 0.045
S, max 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.045 0.045
Si, max 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
Ni 0.50max … … … 0.75max 0.75max 0.50max 0.80max 0.50max
Cr 11.5-14.5 11.5-13.5 14.0-16.0 16.0-18.0 18.0-23.0 23.0-27.0 23.0-27.0 11.5-13.0 10.5-11.7
Mo … … … … … … … … …
Al 0.10-0.30 … … … … … … … …
Cu … … … … 0.90-1.25 … … … …
N … … … … … 0.25 0.25 12xCmin 6xCmin
Ti … … … … … … … 1.10max 0.75max

Chemical Composition
Min. % Max %
Carbon 0.09 0.15
Silicon 0 1.00
Manganese 0 1.00
*Nickel 0 1.00
Chromium 11.50 13.50
Phosphorous 0 0.04
Sulphur 0 0.03
*Nickel additional option

Fully Annealed Automotive Stainless Steel Tubing 6096mm Length High Hardness


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