Description
SUPER DUPLEX S32760 DATA SHEET
| Alloy | UNS Number | SAE Number |
| Super duplex
S32760 |
UNS S32760 |
GENERAL PROPERTIES
Super Duplex UNS S32760 is among the most common super duplex grade in the market. UNS S32760 is a duplex stainless steel especially designed for service in aggressive chloride-containing environments and has additions of W and Cu compared to UNS S32750. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength.
RESISTANCE TO CORROSION
Alloy S32760 provides excellent corrosion resistance and strength properties. In comparison with UNS S32205, SUS 329J3L, and SUS 329J4L (NAS 64), it offers superior localized corrosion resistance, and thus is suitable for use in chemical plants, seawater desalination plants, and similar severe environments.
PHYSICAL PROPERTIES
| Melting Point | Density | Specific Gravity | Modulus of Elasticity in Tension |
| 1350 ℃ | 7.8g/cm3 | 7.8 | 200 GPa |
MECHANICAL PROPERTIES
| Alloy | Tensile Strength Minimum (psi) |
Yield Strength Minimum 0.2% offset (psi) |
% Elongation in 2″ Minimum |
| S32760 | 109k – 135k | 80,000 | 25 |
CHEMICAL PROPERTIES
| Alloy | C | Si | Mn | P | Cr | Ni | S | N | Cu | Mo | W |
| S32760 | 0.03 | 1.0 | 1.0 | 0.03 | 24.0-26.0 | 6.0-8.0 | 0.01 | 0.2 -0.3 | 0.5-1.0 | 3.0-4.0 | 0.5-1.0 |
WELDING
Various welding methods are applicable in the same manner as with the standard austenitic stainless steels, including shielded metal arc welding, TIG welding, and plasma welding. Use of welding electrodes for UNS S32760 is recommended. Preheating and post heating are not necessary. In welding, the interpass temperature should be no more than 100℃ in order to prevent formation of intermetallic compounds.
HEAT TREATMENT
Duplex stainless steels cannot be hardened by heat treatment. They can however be work hardened.
Solution treatment or annealing can be done by rapid cooling after heating to around 1100°C.
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