Duplex Stainless Steels,Stainless Steel Alloys,Duplex Stainless Steel exporters,Stainless Steel Alloys Manufacturers,India

We are the manufacturers, suppliers and stockists of duplex steel and duplex stainless steel.

Composition

The table lists the duplex stainless steels covered in ASTM specifications for pipes, plates, sheets and fittings.

UNS Number Duplex Grades	Type^b	C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu	Other
S31200	-	0.030	2.00	0.045	0.030	1.00	24.0-26.0	5.5-6.5	1.20-2.00	0.14-0.20	-	-
S31260	-	0.03	1.00	0.030	0.030	0.75	24.0-26.0	5.5-7.5	2.5-3.5	0.10-0.20	0.20-0.80	W0.10-0.20
S31803	-	0.030	2.00	0.030	0.020	1.00	21.0-23.0	4.5-6.5	2.5-3.5	0.08-0.20	-
S32001	-	0.030	4.0-6.0	0.040	0.030	1.00	22.0-23.0	1.00-3.00	0.60	0.05-0.17	1.00
S32205	2205	0.030	2.00	0.030	0.020	1.00	19.5-21.5	4.5-6.5	3.0-3.5	0.14-0.20	-
S32304	2304	0.030	2.50	0.040	0.030	1.00	21.5-24.5	3.0-5.5	0.05-0.60	0.05-0.20	0.05-0.60
S32520	-	0.030	1.50	0.035	0.020	0.80	24.0-26.0	5.5-8.0	3.0-4.0	0.20-0.35	0.50-2.00
S32550	255	0.04	1.50	0.040	0.030	1.00	24.0-27.0	4.5-6.5	2.9-3.9	0.10-0.25	1.5-2.5
S32750	2507	0.030	1.20	0.035	0.020	0.80	24.0-26.0	6.0-8.0	3.0-5.0	0.24-0.32	0.50
S32760	-	0.030	1.00	0.030	0.010	1.00	24.0-26.0	6.0-8.0	3.0-4.0	0.20-0.30	0.50-1.00	c
S32900	329 ^d	0.06	1.00	0.040	0.030	0.75	23.0-28.0	2.5-5.0	1.0-2.0	-	-
S32950	-	0.03	2.00	0.035

a. Weight percent, maximum unless otherwise noted.
b. Unless otherwise indicated, a common name, not a trademark, widely used, not associated with any one producer, as listed in ASTM A 240.
c. W 0.50-1.00; Cr+3.3Mo+16N=40 min.
d. AISI designation

BENEFITS

High strength,
High resistance to pitting, crevice corrosion resistance.
High resistance to stress corrosion cracking, corrosion fatigue and erosion,
Good sulfide stress corrosion resistance,
Low thermal expansion and higher heat conductivity than austenitic steels,
Good workability and weldability,
High energy absorption.

APPLICATIONS

Heat exchangers, tubes and pipes for production and handling of gas and oil,
Heat exchangers and pipes in desalination plants,
Pressure vessels, pipes, tanks and heat exchangers for processing and transport of various chemicals,
Pressure vessels, tanks and pipes in process industries handling solutions containing chlorides,
Rotors, fans, shafts and press rolls where the high corrosion fatigue strength can be utilized,
Cargo tanks, piping and welding consumables for chemical tankers.

Manufacturers and stockists of nickel and nickel based metals. The range includes :

Nickel, Monel, Inconel, Hastelloy, Nicrom, Titanium, Pipes, Plates, Steel Tubes, Fittings, Round Bar, Hexaganal etc. in all Shapes and Sizes.

Our Products
Stainless Steel	Alloy Steel	Duplex Steel	Non Ferrous Metals	Nickel Based Metals

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EN-8, 9, 19, 24, 31, 36, 45, 70, 20 MN-Cr5 etc. C.S. Pipe and Tubes in Seamless and Manganese Strips in all sizes and shapes.
MS Alloy Steel : ASTM A-335 GR. P1, P5, P9, P11, P12, P22, etc. ASTM A-387 GR. 515/516 GR. 55, 60, 65, 70 & IS 2002 etc.
MS Carbon Steel :ASTM A-106 GR. A, B & C, A-333 GR, 1 & 6, A-53 GR. A & B, ASTM A-210 GR. A-1, BS 3059 Part I & II, SA 179, IS 1239, 3589 GR. Light [A], Medium [B], Heavy [C] etc.