Duplex Stainless Steel • UNS S31803/32205 • WNR 1.4462

Duplex Stainless Steel | Duplex Stainless Steel 31803 | Super Duplex | Duplex Manufacturers | Manufacturer of Duplex and Super Duplex

Manufacturer of Duplex | Duplex 31803 | Duplex 31803 Exporters | IDuplex 32205 | Duplex 1.4462 | Duplex and Super Duplex Manufacturer Near You | Duplex and Super Duplex | Duplex Supplier | Exporter of Duplex and Super Duplex

Overview:

Krystal is a renowned exporter, manufacturer, stockist, supplier, and stockholder of high-quality Duplex and Super Duplex Alloy Seamless Tubes. These tubes are celebrated for their outstanding corrosion resistance, especially against chloride-induced stress corrosion cracking, and offer superior strength compared to standard austenitic stainless steels. Ideal for demanding applications in the chemical processing, petrochemical, marine, and oil and gas industries, Duplex and Super Duplex alloy tubes provide excellent performance in harsh environments. They maintain their mechanical properties across a wide temperature range, ensuring reliability and durability. Additionally, these tubes offer excellent weldability and ease of fabrication, making them suitable for a variety of critical applications.

Duplex UNS S31803/1.4462 is a duplex stainless steel with approximately 50% ferrite and 50% austenite.This grade has good mechanical strength at room temperature, resistant to corrosive attack, including pitting and is resistant to stress corrosion cracking.

The grade is a successful alternative to the normal 300 series austenitic stainless steels, where its higher strength and resistance to stress corrosion cracking is required in critical applications.

AVAILABLE TUBE PRODUCT FORMS
Seamless Straight Tube \| Straight Pipe \| U - Tube \| Coiled Tube

TYPICAL MANUFACTURING SPECIFICATIONS
-	-
-	-
-

TYPICAL APPLICATIONS
SUBSEA CONTROL LINES
HEAT EXCHANGERS
OFFSHORE PLATFORMS
FIRE-FIGHTING SYSTEMS
INJECTION & BALLAST WATER SYSTEMS

INDUSTRIES PREDOMINANTLY USING THIS GRADE
OIL AND GAS
CHEMICAL PROCESSES

Technical Specifications

CHEMICAL COMPOSITION (% by weight)
Element	Min	Max
C	-	0.030
Mn	-	2.00
P	-	0.030
S	-	0.020
Si	-	1.00
Ni	4.5	6.5
Cr	21.0	23.0
Mo	2.5	3.5
N	0.08	0.20
Fe	Balance

PHYSICAL PROPERTIES (Room Temperature)
Specific Heat (0-100°C)	500	J.kg-1.°K-1
Thermal Conductivity	15	W.m -1.°K-1
Thermal Expansion	13	mm/m/°C
Modulus Elasticity	200	GPa
Electrical Resistivity	8.5	Ohm-cm
Density	7.8	g/cm3

MECHANICAL PROPERTIES
Temper	Annealed
Tensile Rm	90	ksi (min)
Tensile Rm	620	MPa (min)
R.p. 0.2% Yield	65	ksi (min)
R.p. 0.2% Yield	450	MPa (min)
Elongation (2” or 4D gl)	25	% (min)