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BWG18 - BWG12 Seamless Stainless Steel Tubing ASME SA268 For Expansion Joints

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BWG18 - BWG12 Seamless Stainless Steel Tubing ASME SA268 For Expansion Joints

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Large Image :  BWG18 - BWG12 Seamless Stainless Steel Tubing ASME SA268 For Expansion Joints

Product Details:
Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001, TS16949, PED, AD2000
Model Number: SMLS
Payment & Shipping Terms:
Minimum Order Quantity: 500KGS
Price: NEGOCIATION
Packaging Details: WOODEN BOXED
Delivery Time: Ex-Mill 15 - 30DAYS
Payment Terms: T/T, L/C
Supply Ability: 100TONS/MONTH
Detailed Product Description
Product Name: TP440 Ferritc Steel Tube Specification: ASTM A268 ASME SA268
Material Grade: TP440 Size Range: 5/8"-2"
WT: BWG18-BWG12 Length: 6096mm
Finishing Options: Pickling, Polishing, Custom Cutting Test Certificate: EN10204 3.1
Packaging: Wooden Box, Bundled, Export Packaging Available Application: Boiler,Heat Exchanger
Shape: Round
High Light:

industrial stainless steel pipe

,

ss round tube

ASME SA268 WNR 1.4550/1.4961 TP440 Ferritc Stainless Steel Seamless Tube

 

Stainless Steel 440 is a ferritic, straight chromium, non-hardenable evaluation, joining great consumption resistance and form ability qualities with valuable mechanical properties. Its capacity to oppose nitric corrosive assault allows its utilization in particular compound applications yet car trim and apparatus segments speaks to its biggest fields of use.

Grade 440F is the free-machining variant of this evaluation, accessible in bar structure for utilization in programmed screw machines. Grade 434 is the molybdenum bearing rendition of Grade 440 and has the same valuable blend of properties. Its molybdenum expansion enhances consumption resistance. Stainless Steelproperties for 430 are determined for level moved item (plate, sheet and curl) in ASTM A240/A240M. Comparable yet not so much indistinguishable properties are determined for different items, for example, forgings and bar in their separate determinations. Properties of Grade 430F are indicated for bar in ASTM A582.

Applications

  • Aerospace – piston engine manifolds
  • Chemical Processing
  • Expansion Joints
  • Food Processing – equipment and storage
  • Petroleum Refining – polythionic acid service
  • Waste Treatment – thermal oxidizers

 

Typical Manufacturing Specifications:
 

ASTM A268

 

ASME SA268

 

TP440 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 440 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.

 

Chemical Composition

Grade   C Mn Si P S Cr MO Ni CU
440 Min - - - - - 12.0 - - -
max 0.15 1.00 1.00 0.04 0.03 14.0 - - -

Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) Brinell (HB)
440 95,000 50,000 25 - 175

Physical Properties

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion
(mm/m/°C)
Thermal Conductivity
(W/m.K)
Specific Heat 0-100°C (J/kg.K) Electrical Resistivity (nW.m)
SS 440 0-100°C 0-315°C 0-538°C at 100°C at 500°C
-7750 200 10.4 11.0 11.4 23.9 26.0 460 600

 

 

 

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

BWG18 - BWG12 Seamless Stainless Steel Tubing ASME SA268 For Expansion Joints 0

Contact Details
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Contact Person: Will Ma

Tel: +86 13918539222

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