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SSC-6MO Stainless Steel Sheet & Plate

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Stainless Steel Plate SSC-6MO (UNS N08367,1.4547)

SSC-6MO, also known as UNS N08367 and 1.4547, is a super-austenitic stainless steel widely recognized for its superior corrosion resistance, strength, and durability. It is specifically engineered to perform in challenging environments, such as those involving high chloride concentrations, acidic media, and extreme temperatures. This material is a preferred choice for industries requiring reliable performance in aggressive conditions, including chemical processing, marine, and oil and gas.

 

Key Features SSC-6MO Stainless Steel Sheet & Plate

  • Superior Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich environments.
  • High Molybdenum Content: Contains 6% molybdenum, enhancing its strength and corrosion resistance.
  • Excellent Mechanical Properties: High tensile and yield strength, along with good toughness at both high and low temperatures.
  • Weldability and Fabrication: It is easily welded and formed, making it ideal for complex shapes and applications.
  • Versatility: Ideal for industries like marine, chemical processing, desalination, and oil & gas, where durability under extreme conditions is critical.
  • Long-Term Performance: Prolonged service life reduces maintenance and replacement costs.

 

Technical Specifications:

  • UNS Number: N08367
  • DIN/EN Designation: 1.4547
  • Standards Compliance: ASTM A240/A240M

Available Thickness

3/16″ 1/4″ 5/16″ 3/8″ 1/2″ 5/8″
4.8mm 6.3mm 7.9mm 9.5mm 12.7mm 15.9mm
3/4″ 1″ 1 1/4″ 1 1/2″ 1 3/4″ 2″
19mm 25.4mm 31.8mm 38.1mm 44.5mm 50.8mm
ssc-6mo-stainless-steel-sheet-plate

Application

  • Automotive
  • Chemical and Pharmaceutical
  • Fertilizer
  • Food Processing and Handling
  • Manufacturing
  • Mining
  • Oil & Gas
  • Phosphate Mining

Standard

  • ASTM A240 / A240M
  • ASTM A276 / A276M
  • ASTM A312 / A312M
  • ISO 15510
  • EN 10088-2
  • IN 10204
  • HE G4304
  • HE G4305
  • ASME SA240 / SA240M
  • ASME SA312 / SA312M

Corrosion Resistance

  • High Molybdenum Content: SSC-6MO features a substantial amount of molybdenum (Mo), typically around 6%. Molybdenum plays a critical role in improving resistance to chloride-induced pitting and crevice corrosion, which is common in marine and coastal environments. This makes SSC-6MO an ideal material for applications exposed to seawater or brine solutions.
  • Resistance to Pitting Corrosion: Pitting corrosion is a localized form of corrosion that leads to the formation of small holes or pits on the surface. SSC-6MO’s high molybdenum content significantly enhances its resistance to pitting corrosion, ensuring the longevity and structural integrity of components in corrosive environments.
  • Resistance to Crevice Corrosion: Crevice corrosion occurs in confined spaces where stagnant water or corrosive agents can accumulate. SSC-6MO provides robust protection against this type of corrosion, making it suitable for applications with narrow gaps or joints where crevice corrosion might otherwise occur.
  • Stress Corrosion Cracking (SCC) Resistance: Stress corrosion cracking can be a major concern in stainless steels exposed to tensile stress and corrosive environments. SSC-6MO is designed to resist stress corrosion cracking, even in high-chloride environments, ensuring that components maintain their strength and performance over time.
  • Oxidation Resistance: The alloy maintains good oxidation resistance at high temperatures, allowing it to withstand elevated temperatures without significant degradation. This makes SSC-6MO suitable for use in high-temperature applications where oxidation could otherwise be a problem.
  • General Corrosion Resistance: Beyond specific forms of corrosion, SSC-6MO exhibits excellent overall resistance to general corrosion. This makes it versatile for a wide range of applications in aggressive chemical environments, including acid and alkaline solutions.

Equivalent Grade Stainless Steel SSC-6MO

Country
Standard
Grade
USA
ASTM
UNS S31254
Germany
DIN
1.4547
Japan
JIS
SUS 312L
France
AFNOR
X1CrNiMoCuN20-18-7
United Kingdom
BS
254 SMO
China
GB
00Cr20Ni18Mo6CuN

SSC-6MO Chemical Composition

ElementContent (%)
Chromium (Cr)20.0 – 22.0
Nickel (Ni)6.0 – 7.0
Molybdenum (Mo)6.0 – 7.0
Iron (Fe)Balance
Manganese (Mn)1.0 max
Silicon (Si)0.8 max
Carbon (C)0.03 max
Phosphorus (P)0.03 max
Sulfur (S)0.02 max
Nitrogen (N)0.18 – 0.22

SSC-6MO Physical Properties

PropertyValue
Density~8.0 g/cm³
Melting Point1400 – 1450°C
Thermal Conductivity14 – 16 W/m·K
Thermal Expansion~16.0 x 10⁻⁶ /K

SSC-6MO Mechanical Properties

Property Value
Tensile Strength 700 – 900 MPa
Yield Strength 300 – 550 MPa
Elongation 25 – 40%
Hardness (Rockwell B) 85 – 95

Fabrication Data

  • Cutting: Can be cut using standard methods such as shearing, laser cutting, or water jet cutting.
  • Welding: Requires careful handling to avoid sensitization and to ensure weld quality. TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding methods are widely utilized.
  • Heat Treatment: Typically not required, but stress relief may be done if necessary. Annealing can help in achieving desired mechanical properties.
  • Forming: Can be cold or hot formed depending on the thickness and application. Cold working is preferred for thinner plates, while hot working is used for thicker sections.
  • Machining: Standard machining practices apply. Use cutting tools designed for stainless steel to avoid excessive wear.
  • Surface Treatment: May include passivation to enhance corrosion resistance.
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