Super Duplex Stainless Steel

Super Duplex Stainless Steel

High resistance to pitting, crevice and chloride stress corrosion, high resistance to general corrosion in acids, high corrosion fatigue and erosion corrosion, good weldability, High Pitting Resistance Equivalent Number (>40).

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Super Duplex Specification/Condition

• ASTM A182/ ASTM 276 / ASTM A479 / NACE MR0175 and UNS S32750

Super Duplex Applications

• O&G equipment
• offshore platforms
• heat exchangers
• water injection systems
• chemical industries

Super Duplex Technical Data

• UTS (KSI): Min 116 KSI
• Yield 0.2% Offset (KSI): Min 80 KSI
• EL (% Min): 15%
• RA (% Min): -%
• Hardness (BHN): Ma 310 BHN
• Charpy Impact Min. ft-lbs: 50 @-50°F

Super Duplex Stocking Dimensions

• Bar: 0.5 – 10.0 in
• Bored Bar with bespoke internal diameters via vSM’s in-house deep hole drilling and honing capabilities

 

Super Duplex Chemical Composition (Wt %)

 

Carbon (C)	Manganese (Mn)	Phosphorus (P)	Sulfur (S)	Silicon (Si)	Nickel (Ni)	Cobalt (Co)
0.030% Max	1.2% Max	0.035% Max	0.020% Max	0.8% Max	42% – 46%	–

 

Chromium (Cr)	Molybdenum (Mo)	Niobium + Tantalum (Nb (Cb) + Ta)	Titanium (Ti)	Copper (Cu)	Aluminum (Al)	Iron (Fe) & Others
24.0-26.0	3.00% – 5.00%	–	–	–	–	Fpern 38%- 48%