254 SMO Plate

  • Home
  • 254 SMO Plate
254 SMO Plate
What is 254 SMO Plate ?

254 SMO has molybdenum and nitrogen in its alloy. This austenitic stainless steel shows very high resistance to crevice and surface corrosion. The 254 smo plate is a cost-effective substitute for any high nickel and titanium alloys. The material is tough to machine due to high sulfur content and it also has a high work hardening rate. The UNS S31254 plate shows high impact toughness and is resistant to pitting and chloride ion related stress corrosion cracking. It has twice the strength of what is possessed by 300 series stainless steel.

The ASTM A240 UNS S31254 plate can be welded using filler material like AWS A5.14 ERNiCrMo-3 or it can lead to poor strength properties. SA 240 S31254 can be annealed within the temperature range of 1149-1204 °C after which they should be water quenched. Due to all these properties, the A240 S31254 plates can be used in applications like salt water handling, flue gas desulphurization scrubbers, heat exchangers, etc.

Table of content

Find a genuine UNS S31254 sheet supplier in India who adheres to ASTM A240, and discover its permitted rate of corrosion

What is the permitted rate of corrosion for S31254 plate?

The S31254 plate shows good resistance to corrosion in various aggressive environments. They can resist pitting, crevice corrosion and also chloride ion related stress corrosion cracking. However, SA 240 UNS S31254 plate can get rust if exposed to unfavorable operating conditions based on temperatures, pH levels, concentration of the corrosive agents, etc.

We specialise in custom sizes SA 240 6mo strips and coil to meet your specific requirements for Saltwater handling applications at an affordable price, read about heat treatment

UNS S31254 sheet

UNS S31254 sheet

254 SMO strip

254 SMO strip

1.4547 plate

1.4547 plate

What is the highest heat input possible for 254 SMO sheet?

Heat input is the amount of thermal energy transferred to the ASTM A240 S31254 material during welding. Generally, it has low thermal conductivity and high thermal expansion, which means they should be welded carefully. The recommended heat input of 254 smo sheet is <1.5 kJ/mm and interpass temperature is <100 °C.

As a trusted stockist we provide Werkstoff Nr. 1.4547 annealed plates thicknesses ranging from 0.0125 to 5 inches and widths from 30 to 240 inches in Mumbai. view complete specification

254 smo plate specification
254 SMO Plate specification


254 SMO Plate Thickness Width Length
.0125 to 5.00 inch 30 to 240 inch upto 144 "
Specification Cutting 254 SMO Plate Application
ASTM A240/ ASME SA240 laser, plasma, waterjet sea water, pulp mill bleach plant
We can provide cut-to-size SMO 254 hot and cold rolled plate in almost any size, finish, and type with the highest standards and quality.
Most Common types of UNS S31254 plate
254 SMO stainless steel coil

254 SMO stainless steel coil

  • Thickness: 0.0125 to 5 inches
  • ASTM A240 | ASME SA240
  • Widths: 30 to 240 inches
6 Moly foil

6 Moly foil

  • No.4
  • BA NO(8)
ASTM A240 UNS S31254 shim sheet

ASTM A240 UNS S31254 shim sheet

  • Slitting
  • Laser cutting
  • Polishing
Offering the most competitive price for Alloy 254 SMO foil, shim stock, and rolling sheets with Mill TC, evaluate their chemical, mechanical compatibility, equivalent
254 smo steel plate equivalent
254 SMO Plate 2378 S31254 1.4547 Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7
1.4547 sheet mechanical properties
Elongation (min 2"): 35%
Tensile Strength: 98 ksi min
Hardness (Rockwell B Scale): 96 HRB max
Yield Strength: 45 ksi min
SA 240 S31254 coil chemical properties
254 SMO Plate S
Cr Chromium Ni Nickel Mo
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
Physical properties of smo 254 plate
Electrical resistance, 20°C (µ.O.m) 0.85
Magnetic Permeability <1.05
254 SMO Plate Density (Kg.m-3) 8000
Specific Heat 20°C (J.Kg-1.°K-1) 500
Young€™s Modulus (N/mm2) 200 x 103
Thermal conductivity, 20°C (W.m-1.°K-1) 13.5
What does 1.4547 plate cost?

The 1.4547 plate is quite expensive, given its chemical composition and mechanical properties. However, the exact price can vary with the 254 Smo Plate Suppliers, their internal costs and market conditions. The purchase price can also change with the quantity ordered, custom requirements, size & dimensions and delivery location. If you are looking for high quality 6mo Plate at a competitive rate, contact Regent Steel & Engineering Co.

what is welding process of 254 SMO steel plate ?

The 254 Smo Steel Plate material has high chromium, molybdenum and nitrogen content, which can influence its weldability. It is crucial to select the right welding technique to ensure the integrity of the plate’s weld joint. The commonly used processes are gas tungsten arc, gas metal arc and shielded metal arc welding. It is crucial to maintain the right interpass temperature to avoid excess heat buildup during multi-pass welding.

What distinguishes 254 SMO stainless steel from a super duplex?
  • Super duplex stainless steel has higher alloying elements than 254 smo and thus, they have greater corrosion resistance and strength.
  • Super duplex ss has higher mechanical properties in aggressive environments than 254 smo stainless steel coil.
  • Smo 254 Sheet Price is lower than that of super duplex material.
Thermal properties of S31254 sheet
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
Specific heat capacity of 254 smo coil
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
SMO 254 sheet 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
1.4547 sheet temperature range
Temperature Proof strength
°C Rp1.0 Rp0.2
min. min.
200 225 190
100 270 230
400 190 160
300 200 170
500 180 148
What are the 254 SMO plate major benefits?

superior corrosion resistance and good weldability

What is the highest temperature that 254 smo sheet can withstand?

up to 300°C (572°F)

What is hardness of SA 240 UNS S31254 plate

190 to 230 HBW

Are post-weld heat treatments necessary for SMO 254 plate?

not necessary

What is ASTM specification for 254 SMO coil ?