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ASTM A403 254 SMO Buttweld Pipe Fittings

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Contents-

1. ASTM A403 254 SMO Buttweld Pipe Fittings Specification

2. ASTM A403 254 SMO Buttweld Pipe Fittings quality certificates

3. ASTM A403 254 SMO Buttweld Pipe Fittings Packaging & Shipping

4. ASTM A403 254 SMO Buttweld Pipe Fittings Useful info

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ASTM A403 254 SMO Buttweld Pipe Fittings Specification

Standards:

  • ASTM/ASME: UNS S31254
  • EURONORM: FeMi35Cr20Cu4Mo2
  • DIN: 2.4660

Product Name: ASTM A403 254 SMO Buttweld Pipe Fittings

254 SMO

UNS S31254 F44/ 1.4547 / 2378

buttweld-pipe-fittings

Seamless and Welded butt welding Fittings – ASTM A403 254 SMO Buttweld Pipe Fittings

Products description
45, 90, 180, LR & SR Elbow, Tee, Cross, Reducer, Cap, Stub end, bend
Products Range
DN15-DN3000 seamless and welded
Wall thickness
Sch5-Sch160, Sch5s-S16s
Manufacturing  Standard
GB12459,GM/T13401,SH3408/3409,HG/T21635/21631, SY/T0510,ANSIB16.9, JIS 2312/2313, DIN 2605/2615/2617;
Material
0Cr19Ni9 0Cr18Ni9Ti 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti 00Cr18Ni10, 00Cr19Ni11, 00Cr17Ni14Mo2, 304/304L,
316/316L,321,321H,317L,904L, 1.4541.1.4571.1.4301,1.4406
Duplex & Super Stainless Steel
ASTM1815 UNS31803(2205-00Cr22Ni5Mo3) UNS32750 (2507-00Cr25Ni7Mo4N); UNS32760
Carbon steel
Q23520#16Mn16MnRA234, WPB, WPL3/L6/L9,WPHY42,/46/52/56/60/65/70
Alloy steel
12CrMo12CrMoV15CrMo10CrMo910WP1,WP5,WP9, WP11,WP22,WP91
Others
Copper-Nickle Alloy, Titanium, Aluminum, Monel, Inconel, Hastelloy and other special material

Reference Standard

Standard Code Standard Name
ASME B16.9 Factory-made wrought steel butt-welding fittings
ASME B16.5 Pipe flanges and flanged fittings
ASME B16.11 Forged fittings socket-welding and threaded
ASME B16.47 Steel flanges
ASME B16.28 Wrought steel butt-welding short radius elbows and returns
MSS-SP-43 Wrought stainless steel butt-welding fittings
MSS-SP-44 Steel flanges
MSS-SP-75 Specification for high test wrought butt welding fittings
MSS-SP-79 Socket-welding reducer inserts
MSS-SP-83 Class 3000 steel pipe unions socket-welding and threaded
MSS-SP-95 Swaged © nipples and Circle plugs
MSS-SP-97 Integrally reinforced forged branch outlet fittings-socket welding, threaded and butt-welding ends
ANSI/AWWA C207 Steel Pipe Flanges For Waterworks Service

Specifications of Alloy 254

  • Alloy 254 to MLA-MPS-254-BAR
  • ASTM A479 Bar UNS S31254
  • ASTM A276 Bar UNS S31254
  • ASTM A182 Forgings UNS S31254 F44
  • ASTM A240 Plate S31254

ASTM A403 254 SMO Buttweld Pipe Fittings quality certificates

ASTM A403 254 SMO Buttweld Pipe Fittings delivered with a 3.1 certificate. we can perform the tests required to issue a 3.2 certificate, or a CMTR in accordance with the ASME III Code.

ASTM A403 254 SMO Buttweld Pipe Fittings Packaging & Shipping

Beyond products as such, we offer some additional services quite worth having.

So, besides the fact that we can arrange freight transportation for you, we can before that:

  • specifically mark parts or packages;
  • provide for a special packing according to what is required by the shipping method or by you.

We mark the ASTM A403 254 SMO Buttweld Pipe Fittings as needed with the most suitable marking technique.

When packaging and packing, our experienced warehouse staff systematically takes the greatest precautions for your ASTM A403 254 SMO Buttweld Pipe Fittings to be optimally protected during transportation. We pack the ASTM A403 254 SMO Buttweld Pipe Fittings according to the appropriate method: strapped pallet, wooden crate, overseas packing (ISPM15).

ASTM A403 254 SMO Buttweld Pipe Fittings Useful info

Alloys 254 / 254 SMO / 6 Mo is an austenitic stainless steel with a high molybdenum content. Coupled with Nickel and Copper this gives the alloy a good resistance to pitting and crevice corrosion, especially in environments containing halide ions, e.g. chloride, bromide and fluoride solutions.

254 SMO (UNS S31254) may offer a cost effective solution to Nickel and Titanium alloys in these environments.

254 SMO is a high-alloy austenitic stainless steel developed for use in seawater and other aggressive chloride-bearing media. The steel is characterized by the following properties:

  • Excellent resistance to pitting and crevice corrosion
  • High resistance to general corrosion
  • High resistance to stress corrosion cracking
  • Higher strength than conventional austenitic stainless steels
  • Good weldability

Standards

  • UNS S31254
  • EN number 1.4547
  • EN name X1CrNiMoCuN20-18-7
  • W.Nr. 1.4529**
  • SS 2378*
  • AFNOR Z1 CNDU 20.18.06AZ*

* Obsolete. Replaced by EN.

** Nearest equivalent grade.

Product standards

  • Seamless tube and pipe: ASTM A269, A213, A312, NFA 49-217, EN 10216-5
  • Welded tube and pipe: ASTM A249, A269 , A312, A358, A409
  • Fittings: ASTM A182
  • Bar: ASTM A276, A479, EN 10088-3
  • Forged products: ASTM A473

Chemical composition (nominal) %

C Si Mn P S Cr Ni Mo N Cu
≤0.020 ≤0.80 ≤1.00 ≤0.030 ≤0.010 20 18 6.1 0.20 0.7

Chemical Properties

% C Cr Mn Mo N Ni P Si S
254 SMO 0.02 max min: 19.5

max:20.0

1.00 max min: 6.0

max: 6.5

min: 0.18

max: 0.20

min: 17.5

max: 18.0

0.03 max 0.80 max 1.01 max

Mechanical properties

The following figures apply to solution annealed condition seamless tube and pipe.

Wall thickness Proof strength Tensile strength Elong. Hardness
Rp0.2a) Rp1.0a) Rm Ab) A2″ HRB
mm MPa MPa MPa % %
Metric units, at 20°C
<5 ≥310 ≥340 675-850 ≥35 ≥35 ≤96
>5 ≥310 ≥340 655-850 ≥35 ≥35 ≤96

1 MPa = 1 N/mm2

Fabrication

Avoid abrasion against copper/copper alloys or other similar metals which, if present in metallic form, can cause cracks during subsequent welding, hot processing or heat treatment.

Bending

The excellent formability of 254 SMO permits cold bending to very tight bending radii. Annealing is not normally necessary after cold bending.

Corrosion Resistance

  • Excellent resistance to pitting and crevice corrosion due to its high chromium, molybdenum, and nitrogen content
  • Has a very low carbon content, which means there is very little risk of carbide precipitation during heating
  • Possesses very good resistance in water containing chlorides, therefore, it is suitable for use in seawater as it can be exposed to it for prolonged periods without suffering from crevice corrosion

Machinability

  • High work hardening rate combined with a lack of sulfur makes it very difficult to machine
  • Slow speeds, sharp tools, positive feeds, over-powered machine tools, and ample lubrication offer the best results