254 SMO Plate

What is 254 SMO Plate?

Designed to be used in seawater as well as other aggressive chloride bearing environments, the UNS S31254 is a highly alloyed austenitic stainless steel grade.

254 SMO Plate

254 SMO Plate

 Alloy 254 6 Mo Sheet

Alloy 254 6 Mo Sheet

UNS S31254 Coils

UNS S31254 Coils

 

The plates produced from 254 SMO exhibit excellent resistance to pitting as well as to crevice corrosion. In fact, the PREN value of this stainless steel grade sheet is more than 42.5. The yield strength of this high alloy grade coil is 310 Mpa and shear modulus valued at 75 GPa, whereas the melting point for Alloy 254 SMO shim stock falls in between the temperature range of 1320℃ - 1390 ℃.

Depending on the needs of the buyer, the surface of these 254 6mo stainless steel sheets could be finished using value added treatments such as Hot rolled plate or as known as HR, Cold rolled sheet or as referred to as CR, Satin finish that is Met with Plastic Coated. Additionally, a No.1 finish hot rolled 254 SMO En 1.4547 Plate along with options such as 1D, 2B, 2D,8K, BA NO(8), hairline, brush, No.4, BA, a mirror finish could be conducted on these plates. If required these sheets or plates could be left bare.

 

What is ASTM A240 UNS S31254 Sheet?

The ASTM A240 is a specification that caters to several components such as plate, coil, sheet, and strip manufactured from chromium based alloy, like the UNS S31254 which can be used to build pressure vessel as well as for general applications. Apart from the chemistry requirements, the mechanical requirements for these components made from W.Nr. 1.4547 are also specified.

 

Material Equivalent Table Of Werkstoff No 1.4547 Sheet

STANDARD WERKSTOFF NR. UNS SIS AFNOR EN
SMO 254 1.4547 S31254 2378 Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7

 

Chemical Structure Of ASTM A240 UNS S31254 Coils

Grade Ni Cr Mo Cu N C Mn Si P S
SMO 254 17.5-18.5 19.5-20.5  6-6.5 0.5-1.0 0.18-0.22 0.02 1.0 0.08 0.03 0.01

 

Mechanical Strength Table of SMO 254 Shim Sheet

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
 8.0 g/cm3 1320-1390 ℃ 650 300  35 %

 

Standard Quality Specification 254 SMO Plate

ASTM Specifications ASTM A240 / ASME SA240
Thickness in stock 4-100mm thick
Available Width
1800mm, 1000mm, 1500mm, 2500mm, 3500mm, 2000mm, 1219mm, 3000mm etc
Producing Length 6000mm, 2440mm, 5800mm, 3000mm, 2000mm etc
Surface condition NO.1, etching, hair line, embossed, Brush, 2B, 2D, BA, NO.8, checkered, 8K, mirror, NO.4, sand blast etc
Finish Available Cold rolled sheet (CR), 2B, Hot rolled plate (HR), BA NO(8), SATIN (Met with Plastic Coated), 2D  
different Form Plain Sheet, Foils, Coils, Flats, Rolls, Shim Sheet, Strip, Chequered Plate, Blank (Circle), Perforated Sheet, Ring (Flange) etc.

 

Alloy 254 6 Mo Sheet Standard Sizes

Alloy 254 6 Mo Sheet

Thickness : 4-100MM
Length: 2000-6000 MM

 

Get Big Stock Of 254 Smo Plate Available In A Wide Variety Of Sizes