ASTM A312 UNS S31254 Pipes,S31254 Seamless Pipe,ASTM A312 254 SMO PIPES

We are the professional exporter and supplier of ASTM A312 S31254 Seamless Stainless Steel Pipe,SA 312 S31254 pipe,ASTM A312 254SMO Seamless Stainless Steel Pipe,

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

The PRE is defined as, in weight-%, PRE = %Cr + 3.3 x %Mo + 16 x %N

Standards

  • UNS: S31254
  • EN Number: 1.4547
  • EN Name: X1CrNiMoCuN20-18-7
  • W.Nr.: 1.4529**
  • AFNOR: Z1 CNDU 20.18.06AZ*

ASTM A312 UNS S31254 Pipes,S31254 Seamless Pipe,ASTM A312 254 SMO PIPES

ASTM A 312 

Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

 

ASTM A312 S31254 Pipe specification.

Grade: UNS S31254,254SMO,

Standard:Astm A312

Size: OD: 10.3-762mm WT: 1-50mm
Length: fixed length or random
Delivery condition: annealing/pickling/ passivization
Packaging: bundle, plywood case.

 seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.

ASTM A312  S31254 Stainless Steel Seamless Pipes
Sr. No. Material Size Sch. Specification
1 Seamless Pipe 15 NB
To
300 NB
Sch. 5s
Sch. 10s
Sch. 40s
Sch. 80s
Sch. 160s
Sch. XXS
ASTM A 312
2 Welded (ERW) Pipe 15 NB
To
300 NB
Sch. 5s
Sch. 10
Sch. 40s &
Sch. 80s
ASTM A 312
3 Welded (ERW) Pipe 150 NB
To
600 NB
Sch. 5s
Sch. 10s
Sch. 40s &
Sch. 80s
ASTM A 358

ASTM A312 UNS S31254 ( 6% Moly) , 254MO,Cold Drawing And Cold Rolling, Stainless Stel Seamless Pipe 

Chemical Composition % of  ASTM A312 UNS S31254 Pipe

C Cr Cu Mn Mo N Ni P Si S
Max     Max       Max Max Max
0.02 19.5-20.5 0.5-1.0 1.0 6.0-6.5 0.18-0.22 17.5-18.5 0.03 0.80 1.01

Mechanical Properties of ASTM A312 SMO 254 Stainless Steel Seamless Pipes

The following table shows Mechanical Properties of stainless steel grade 254 SMO™.

Properties Metric Imperial
Tensile strength 680 MPa 98600 psi
Yield strength 300 MPa 43500 psi
Modulus of elasticity 195 GPa 28300 ksi
Shear modulus 75 GPa 10900 ksi
Poisson’s ratio 0.30 0.30
Elongation at break 50 % 50 %
Hardness, Brinell 210 210

 

Tests and Inspection Of ASTM A312 S31254 Stainless Steel  Pipe
Flattening Test,Flaring Test,Hardness Test,Hydrostatic or Nondestruction Electric Test ( Eddy Current and Ultrasonic Testing)
1.PMI,Spectro Chemical Aanlysis Test before shipment.
2.100% Dimension & Visual Examination 
3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test, Transverse-guided face bend test
4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test  (ET or UT) 
5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)
6.Straightness Test  (optional)
7.Roughness Test (optional)
8.Intergranular Corrosion Test(optional)
9.Impact Test (optional)
10.Grain Size Determinations (optional)