254 SMO Pipe

254 SMO Pipe
What is 254 SMO pipe ?

254 SMO is a high austenitic grade that has 3 times the strength possessed by stainless steel 300 series. The 254 smo pipe can resist different types of corrosion like pitting, crevice and chloride stress corrosion cracking. They also have high ductility and good impact strength. The pipes can show great performance in elevated temperature conditions and maintain their properties in a volatile environment.

The pipes are cost efficient and easy to fabricate and weld. The 254 smo stainless steel pipes can be used in sea water handling, food processing, etc. They are tough to machine due to lack of sulphur and has high work hardening rate. DIN 1.4547 seamless tube should be annealed post process to gain maximum corrosion resistance properties.

Table of content

Suppliers of genuine smo 254 pipe in India in accordance with ASTM A312, see UNS S31254 pipe equivalent material

What is material SMO 254 pipe equivalent?

The smo 254 pipe equivalent are ASTM A814, A469, A312, A813, A240, A249, A269 and A182.

Unable to easily obtain 254 smo tube in unusual sizes ? check out our selection of sizes range from 0.250 to 0.750 inch OD or custom at an actual cost, read smo pipe welding process

SMO 254 pipe

SMO 254 pipe

254 SMO tube

254 SMO tube

UNS S31254 pipe

UNS S31254 pipe

How to weld SMO pipe?
  • The smo pipe should be prepared properly by removing the contaminants. Selecting the right welding procedure is also very crucial.
  • The filler material must be selected appropriately to match the base metal composition.
  • The welding should be conducted by experienced professionals who have experience working with SMO products.

As a stockist wide variety of 254 smo seamless pipe are available in 0.035 to 0.065 inch wall thickness with us in Mumbai, learn how do you calculate 254 smo tubing thickness

254 smo pipe specification
254 SMO pipe specification

 

Size Wall Thickness Length
1/2 " to 100 " NB .035 to .065 inch 6 to 12 meter
Specification Process Application
ASTM A269, A213, A312, A249 seamless, hot rolled, annealed, welded Equipment for handling seawater
We can provide DIN 1.4547 seamless tube in basically any size if you require it with the highest standards and quality, must know its critical pitting temperature
Frequently used smo 254 pipe
254 SMO tubing

254 SMO tubing

  • Size: 1/8 to 48 inch
  • OD: 0.3 to 10mm
  • Schedules 5 to XXS
254 SMO seamless pipe

254 SMO seamless pipe

  • Polish
  • Bright
  • Black
DIN 1.4547 seamless tube

DIN 1.4547 seamless tube

  • Quarter Hard
  • Half Hard
  • Spring Hard
We are offering the most competitively priced 254 smo stainless steel pipe with Mill TC, view roughness factor of UNS S31254 tube
254 smo stainless steel pipe mechanical properties
Elongation (min 2"): 35%
Tensile Strength: 98 ksi min
Hardness (Rockwell B Scale): 96 HRB max
Yield Strength: 45 ksi min
254 smo tubing equivalent
STANDARD SIS UNS WERKSTOFF NR. GOST JIS AFNOR EN
254 SMO 2378 S31254 1.4547 Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7
S31254 pipe chemical properties
254 SMO S
Sulfur
Cu
Copper
C
Carbon
Mn
Manganese
P
Phosphorus
Si
Silicon
Cr Chromium Ni Nickel Mo
Molybdenum
N
Nitrogen
0.015 max 0.50–1.00 0.020 max 1.00 max 0.030 max 0.80 max 19.5–20.5 17.5–18.5 6.0–6.5 0.18–0.22
What is the thickness of 254 SMO tube? How do you calculate?

The standard thickness of 254 smo tube ranges between 0.4 to 30 mm. However, they can also be customized specific to client requirements. You can calculate the 254 smo tubing thickness with the given formula: Thickness = Outside Diameter (OD) - 2 x Wall Thickness

What is the critical pitting temperature for UNS s31254 pipe ?

The critical pitting temperature is measured by the s31254 pipe material resistance to localized corrosion, especially pitting. The exact temperature would depend on specific environment and surface conditions. In general, the 254 smo seamless pipe exhibits a high resistance to pitting and the temperature exceeds 50 °C.

What is roughness factor of 254 SMO tubing?

The roughness factor of the smo 254 tubes refers to the surface roughness of the inner walls. It is depicted by the average height deviation from the mean line of the surface profile. This is an important consideration where fluid flow, cleanliness and fouling resistance are critical.

To determine the roughness factor, you need to measure the Ra value using specialized equipment like a profilometer. 254 smo generally has a smooth surface finish and their Ra value typically ranges between 0.1 to 1 µm or higher, depending on the finishing achieved.

 

Thermal conductivity of smo 254 pipe
W/moC Temperature,oC Btu/ft hoF Temperature,oF
21 600 12.5 1200
12 100 7 200
10 20 6 68
14 200 8 400
18 400 10.5 800
16 300 9.5 600
20 500 11.5 1000
23 700 13 1300
Temperature range of UNS s31254 pipe
Temperature Proof strength
°C Rp1.0 Rp0.2
MPa MPa
min. min.
200 225 190
100 270 230
400 190 160
300 200 170
500 180 148
Specific heat capacity 254 smo seamless pipe
J/kg °C Temperature, °C Btu/ft h °F Temperature, °F
485 20 0.12 68
510 100 0.12 200
535 200 0.13 400
565 300 0.14 600
585 400 0.14 800
600 500 0.14 1000
615 600 0.15 1200
625 700 0.15 1400
254 smo welded pipe modulus of elasticity
MPa Temperature, °C ksi Temperature, °F
195 20 28.3 68
190 100 27.6 200
182 200 27.5 400
174 300 25.1 600
166 400 23.8 800
158 500 22.5 1000
DIN 1.4547 seamless tube stress corrosion cracking tests
Grade Remark Time to failure
254 SMO No attack No failure (1000 h)
FAQ
What is the thickness of SMO pipe?

0.4 to 30.00 mm

Is uns S31254 super duplex?

it is superaustenitic stainless steel

What is 254 smo stainless steel pipes thickness tolerance?

12.5%

What is the critical pitting temperature for UNS s31254 tube in chloride solutions?

exceeds 76°C

What is delivery condition of DIN 1.4547 seamless tube ?

white pickled and solution annealed

close