Difference Between Duplex & Super Duplex Stainless Steel

We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, 316H, 316TI, 321, 321H, 309S, 309H, 310S, 310H, 410S, 2205, 904L, 2507, 254, gh3030, 625, 253MA, S30815, 317L, Type 317, 316lN, 8020, 800, 800H, C276, S32304 and others special requirement stainless steel grade.

Grades Of Duplex Stainless Steels

Is duplex stainless steel magnetic?

Ferritic steels are high-chromium, magnetic stainless steels that have a low carbon content. Known for their good ductility, resistance to corrosion and stress corrosion cracking, ferritic steels are commonly used in applications, kitchenware, and industrial equipment.

This is why metal Rolex watches look totally different than different steel watches. Rolex calls 904L chrome steel a “corrosion-resistant superalloy.” 904L differs from 316L due to extra Chromium, Molybdenum, Nickel, and which supplies it improved resistance to acids.

What is ferritic stainless steel used for?

The main difference between 304 vs 316 stainless steel is the composition and corrosion resistance, SS304 doesn’t contain molybdenum while contains 2-3% molybdenum. In addition, AISI 304 has a 18% Cr and 8% Ni and therefore known as 18-8 stainless steel, while AISI 316 has a 16% Chromium and 10% Nickel.

The similar material is used while manufacturing duplex stainless-steel nevertheless the utilization ratio is completely different in both cases & change in ration ends in elevated strength, & corrosion resistance. All film-forming alloys whose corrosion resistance rely upon the stability of passive movies are significantly vulnerable to crevice corrosion. Ferralium® 255 is a brilliant duplex chrome steel provided within the chilly finished and annealed condition. It provides glorious corrosion resistance in a wide variety of corrosive chemicals together with sulphuric, nitric and phosphoric acid, seawater and other chloride containing environments. Austenitic chrome steel is likely one of the commonest forms of chrome steel on this record.

Austral Wright Metals assumes no legal responsibility in connection with the knowledge on this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high efficiency metals for difficult service situations. Our engineers and metallurgists will be happy to offer additional information and functions advice.

  • Sanmac® 2205 is a 22% Cr duplex chrome steel with improved machinability as .
  • Alloy 316L is an austenitic chrome steel supplied in the sizzling labored and annealed condition.
  • Alloy 254, is a excessive alloy austenitic chrome steel supplied within the hot worked and annealed situation.
  • The addition of Mo supplies the product with much improved corrosion resistance in contrast with Alloy 304, particularly with respect to pitting and crevice corrosion in chloride environments.

Stock Thickness: 0.1-200.0mm
Production thickness: 0.5.0-200mm
Width: 600-3900mm
Length: 1000-12000mm
200 : 201,202
300 series: 301,304,304L,304H,309,309S,310S,316L,316Ti,321,321H,330
400 series: 409,409l,410,420J1,420J2,430,436,439,440A/B/C
Duplex: 329,2205,2507,904L,2304
Surface: No.1,1D,2D,2B,NO.4/4K/hairline,satin,6k,BA,mirror/8K

Hiduron® 130 is a excessive-strength cupronickel equipped within the sizzling worked situation. Precipitation strengthening signifies that no further warmth remedy is necessary to make it one of the power copper alloys commercially obtainable. Being a cupronickel, it has glorious resistance to corrosion by seawater and in marine and industrial atmospheres and it is extremely proof against crevice corrosion. Ferralium® 255 weld wire is produced to complement our leading super duplex chrome steel.

As with all corrosion-resistant alloys, duplex stainless steels can undergo corrosion when uncovered to suitably corrosive conditions. As they contain a higher chromium content material than standard 3xx grades, their Pitting Resistance Equivalent Number (PREN) is higher, indicating increased resistance to pitting corrosion. Ferralium® 255 – 3AF is an excellent duplex stainless steel provided within the hot worked, annealed and aged condition. By subjecting the product to an extra ageing process, it is potential to additional enhance the strength of the product while retaining its high ranges of ductility. Ferralium® 255 – SD50 (tremendous duplex 255) is a stainless-steel which is equipped in the sizzling worked and annealed situation.

Companies use martensitic stainless-steel imostly in lengthy merchandise that require sheet and plate form. Harder and more rust and corrosion-resistant than other steels, this 904L steel can take and maintain a polish incredibly properly.

Langley Alloys can the unique steel in the sizzling worked and annealed condition. It achieves good mechanical properties from cryogenic to medium-high temperatures (5400C) and could be considerably strengthened by way of chilly working. Alloy 825 is a nickel-iron-chromium alloy with additions of molybdenum, copper and titanium (NiCr21Mo), supplied in the hot labored and annealed condition.


We have thousands tons stock of stainless steel sheet and coil with various size and grade,mainly include austenitic stainless steel, martens stainless steel (including precipitation hardened stainless steel sheet & coil), ferritic stainless steel, and duplex stainless steel.

Characteristics of Stainless Steel Sheet and Plate:
High corrosion resistance
High strength
High toughness and impact resistance
Temperature resistance
High workability, including machining, stamping, fabricating and welding
Smooth surface finish that can be easily clean

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