Chintamani Stainless Inc is ISO 9001:2008 certified manufacturer, supplier and exporter of Duplex Round Bar in India and worldwide. Duplex Steel Round Bar made by Fe-Ni-Cr alloys consisting of ferritic-austenitic microstructure at room temperature. Super Duplex Steel Plates exhibit greater toughness and better weldability than ferritic stainless steel. ASTM A240 Duplex Steel Round Bar has better corrosion resistance and higher strength than austenitic stainless steel Round Bar .

Duplex steels are essentially a combination of properties from both the ferritic and austenitic groups of stainless steel. Duplex 2205 Round Bar is a nitrogen-enhanced duplex stainless steel grade. The stainless steel grade 300 is referred to as Duplex to suit the definition of a family of stainless steels that do not fall into the categories of fully austenitic grades, such as 304 stainless steel, or solely ferritic grades, such as 430 stainless steel. The stainless S31803 Duplex Spring Steel Bar microstructure is composed of austenite pools enclosed by a continuous ferrite phase. Alloy grade 2205 Duplex Stainless Steel Round Bar was designed to solve typical corrosion issues with austenitic grade 300 series stainless steels.
The numerous applications of 2205 Duplex Rod are mentioned below, healthy overall corrosion tolerance, with a high resistance to chloride stress corrosion cracking,high power, excellent weldability and workability, resistance to sulphide stress corrosion, resistance to chloride pitting and crevice corrosion.Duplex 2205 Threaded Rod, which is useful in a variety of applications, has a lower machinability and cutting velocities that are about 20% slower than grade 304.
Chloride stress corrosion cracking is especially prone to the duplex structure. Duplex 2205 Welding Rod has exceptional power and endurance, as well as strong weldability. The aim of welding any duplex stainless steel is to achieve fusion and heat-affected zones with the base metal's excellent corrosion tolerance and sufficiently high impact durability for the application.
We use high quality alloy that we have gathered from reputable market mills to manufacture Duplex Steel S32205 Hex bars. Before it is manufactured and used, the alloy that we are using for product development is carefully inspected to ensure that the quality of the bars does not deteriorate. We have a team of experts who monitor the production phases so that all of our employees may receive the right assistance for creating high-quality bars that meet customer requirements. They are providing guidance to all employees across all industrial departments in order to develop bars of the highest calibre.
Duplex stainless steels are favored for the multiple properties that they are able to conjure. This is because of the dual microstructure of the ASTM A276 UNS S31803 Round Bar. Having a dual microstructure in an alloy gives it an advantage that the said alloy has characteristics that define both classes of stainless steels. Hence, the inheritance of the ASTM A479 UNS S31803 Hex Bar would include ductility and resistance to corrosion from the austenitic class as well as good toughness and hardness from the ferritic classes.
The benefit of using such an alloy is that despite having good ductility, the hardness of the alloy prevents the Duplex Steel UNS S31803 Bars from getting deformed, especially at elevated temperatures, where any conventional steel alloy would change its shape. This particular characteristic is integral for applications where the retention of shape is a pre-requisite property. For instance, power generation plants or even chemical processing industries that have a lot of exothermic reactions require alloys such as the ASTM A276 F51 Duplex Round Bar, which wouldn’t change shape, despite the application of heat.
Since these alloys contain nickel in their chemical composition, the uns s31803 f51 Rods would be able to withstand elevated temperature conditions. Yet, it is not a practice to use the A276 s31803 material beyond a temperature of 600° F, as a temperature as high as this could see a drastic drop in its properties. Yet in comparison to some type of austenitic steels, the behavior exhibited by the uns s31803 round bar is better at elevated temperatures.

Specification

UNS S32205 Bars Grade	Duplex 2205 – UNS S32205
Standard	ASME, ASTM, GB, API, DIN, AISI, SUS, EN, UNS
WERKSTOFF NR. 1.4462 Round Bars Specification	2205 Duplex Stainless Steel, ASTM A276 UNS S32205
Duplex 2205 Round Bars size	Diameter: 3-~800mm
SAF 2205 Hex Bars size	2-100mm A/F
2205 Duplex Stainless Steel Flat Bars size	Thickness: 2 -100mm
	Width: 10 to 500mm
Duplex 2205 Square Bars size	4 to 100mm
Duplex SS 2205 Angle Bars size	3mm*20mm*20mm~12mm*100mm*100mm
UNS S32205 Section	3.0 to 12.0mm thickness
Channel Bars	80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
Duplex Steel UNS S32205 nickel Hollow Bars	32mm OD x 16mm ID to 250mm OD x 200mm ID)
1.4462 Duplex 2205 Billet Size	1/2" to 495mm Diameter
ASTM A276 Type 2205 Rectangles Size	33 x 30mm to 295 x 1066mm
ASTM A276 Type 2205 Round Bars Finish	Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Duplex Steel S31803 Round Bars Tolerance	H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Din 1.4462 Round Bars Surface	Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Duplex SS 2205 Bars Condition	Hardened & tempered, annealed
c276 Bars Technique	Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bars, Rod
2205 Duplex Stainless Steel Bars Processing	Bars cutting to 650mm
Our UNS S32205 Round Bars dealers & distributors are located in	Gimhae-si, Port-of-Spain, Abu Dhabi, Pimpri-Chinchwad, New Delhi, India, Chennai, Santiago, Manama, KhoBars, Howrah, Muscat, Tehran, Noida, Thiruvananthapuram, Ahmedabad, Courbevoie, Nagpur,Indore, Barsoda, Bogota, Calgary, Caracas, Surat, Kolkata, Montreal, Istanbul, Vadodara, Bengaluru, Gurgaon, Gujarat, Janeiro, Karachi, Rajkot, Ahvaz, Mexico Ranchi, Perth, Ernakulam, Sydney, Coimbatore, Melbourne, Dammam, Jamshedpur, Mumbai, Ankara, Ludhiana, Bangalore, London, Riyadh, Hyderabad, Kuwait, Kanpur, Tau, Lagos
Our Duplex 2205 Round Bars conforms to NACE MR0175/ISO 15156

ASTM A276 Duplex Steel Duplex Steel F51 Hex Bar Size Range

Wt per Foot t of UNS S31803 hex bar	Size in Inches of UNS S31803 hex bar	Wt per 12 ' of UNS S31803 hex bar
0.0180	1/4″	2.160
0.0104	3/16″	1.248
0.0600	3/8″	4.920
0.0290	5/16″	3.480
0.0740	1/2″	8.880
0.0560	7/16″	6.72
1.150	5/8″	13.80
0.0930	9/16″	11.16
1.660	3/4″	19.92
1.390	11/16″	16.68
2.300	7/8″	27.60
2.600	15/16″	31.20
1.950	13/16″	23.40
3.30	1-1/16″	39.60
2.90	1″	34.80
4.600	1-1/4″	55.20
3.700	1-1/8″	44.40
5.600	1-3/8″	67.20
5.100	1-5/16″	61.20
6.600	1-1/2″	79.20
6.100	1-7/16″	73.20
26.53	3″	318.36
9.030	1-3/4″	108.36
7.800	1-5/8″	93.60
18.42	2-1/2″	221.04
11.80	2″	141.60
10.0400	1-7/8″	124.80
16.920	2-3/8″	203.04
14.920	2-1/4″	179.04

ASTM A479 UNS S31803 Finishes

Bright drawn	BD	Slit rolled edge	SRE
Cold drawn	CD	Polished	P
Peeled and turned	P&T	Rough turned/peeled	RT
Cold finished	CF	Hot rolled pickled and annealed	HRAP
Centreless ground	CG	Hot finished	HF
Smooth turned	ST	reeled and Peeled	PR

Duplex Steel UNS S31803 Square Bar Condition

H&T	Hardened and tempered.
ANN	Annealed
PH	Precipitation hardened.

Duplex Steel S31803 Rods Stock List

Duplex Steel UNS S31803 Round Bars	Duplex Steel F51 Hex Bars
ASTM A276 Duplex UNS S31803 Bars	Duplex Steel DIN 1.4462 Round Bars
UNS S31803 Duplex Steel Rods	UNS S31803 Duplex Hot Rolled Round Bars
Duplex Steel UNS S31803 Bright Bar	Duplex Steel UNS S31803 Forged Round Bars

Tolerances Of Uns S31803 F51 Rods

Section/Shape	diameter, Size or width across flats	variation Permitted
	millimeter	millimeter
Flat (thickness)	< 18 > 30 ≦ 50 > 18 ≦ 30 > 50 ≦ 80	+ 0 to - 00.110 + 0 to - 00.250 + 0 to - 00.130 + 0 to - 00.350
Square and hexagon	> 18 ≦ 30 ≥ 6 ≦ 18 > 50 ≦ 80 > 30 ≦ 50 > 80 ≦ 105	+ 0 to - 00.110 + 0 to - 00.090 + 0 to - 00.160 + 0 to - 00.130 + 0 to - 00.250
Round	> 18 ≦ 30 ≥6 ≦ 18 > 50 ≦ 80 > 30 ≦ 50 > 80 ≦ 100	+ 0 to - 00.085 + 0 to - 00.070 + 0 to - 00.120 + 0 to - 00.100 + 0 to - 00.140
Flat (width)	< 18 > 30 ≦ 50 > 18 ≦ 30 > 80 ≦ 100 > 50 ≦ 80 > 100 ≦ 130 > 160 ≦ 320 > 130 ≦ 160	+ 0 to - 00.110 + 0 to - 00.160 + 0 to - 00.130 + 0 to - 00.220 + 0 to - 00.190 + 0 to - 00.350 + 1.00 to - 1.00 + 0 to - 1.00

Equivalent Material Of ASTM A276 UNS S31803 Bar

STANDARD	UNS	WERKSTOFF NR.
UNS S31803	S31803	1.4462

Equivalent of ASTM A815 DSS Pipe Elbow

STANDARD	WERKSTOFF NR.	UNS
Duplex 2205	1.4462	S31803 / S32205

CHEMICAL COMPOSITION

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N	Fe
S31803	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	22.0 – 23.0	3.0 – 3.5	4.50 – 6.50	0.14 – 0.20	63.72 min
S32205	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	21.0 – 23.0	2.50 – 3.50	4.50 – 6.50	0.8 – 0.20	63.54 min

MECHANICAL PROPERTIES

S31803 / S32205	Density	Melting Point	Yield Strength (0.2%Offset)	Tensile Strength	Elongation
	7.8 g/cm3	1350 °C (2460 °F)	Psi – 80000 , MPa – 550	Psi – 116000 , MPa – 800	15 %

Super Duplex Stainless Steel Pipe Size Chart In Inches

1/8″ IPS(.405″ O.D.)	3 1/2″ IPS( 4.000″ O.D.)
SCH 40, 80	SCH 10, 40, 80, 160, XXH
1/4″ IPS(.540″ O.D.)	4″ IPS(4.500″ O.D.)
SCH 10, 40, 80	SCH 10, 40, 80, 160, XXH
3/8″ IPS(.675″ O.D.)	5″ IPS( 5.563″ O.D.)
SCH 10, 40, 80	SCH 10, 40, 80, 160, XXH
1/2″ IPS(.840″ O.D.)	6″ IPS(6.625″ O.D.)
SCH 5, 10, 40, 80, 160, XXH	SCH 5, 10, 40, 80, 120, 160, XXH
3/4″ IPS(1.050″ O.D.)	8 ” IPS(8.625″ O.D.)
SCH 10, 40, 80, 160, XXH	SCH 5, 10, 40, 80, 120, 160, XXH
1″ IPS:(1.315′ O.D.)	10″ IPS(10.750″ O.D.)
SCH 5, 10, 40, 80, 160, XXH	SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4″ IPS(1.660″ O.D.)	12″ IPS(12.750″ O.D.)
SCH 10, 40, 80, 160, XXH	SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2″ IPS(1.900″ O.D.)	14″ IPS(14.000″ O.D.)
SCH 10, 40, 80, 160, XXH	SCH10 (.188), SCH40 (.375)
2″ IPS(2.375″ O.D.)	16″ IPS(16.000″ O.D.)
SCH 10, 40, 80, 160, XXH	SCH10(.188), SCH40(.375)
2 1/2″ IPS(2.875″ O.D.)	18″ IPS (18.000″ O.D.)
SCH 10, 40, 80, 160, XXH	SCH-40 (.375)
3″ IPS( 3.500″ O.D.)
SCH 5, 10, 40, 80, 160, XXH

Shape And Form Of F51 Round Bar

Hollow Rod Round Rod Precision Ground Bars Rings Flat Bars Channel Bars T-Bars Round Square Blocks

Rectangle Threaded Billet Half Round Bars I/H Bars Triangle Forging Hex (A/F) Profiles Rectangular Bar Ingot

General characteristics

Steel designations

Performance

Typical chemical composition, % by mass

name

EN

ASTM Type

UNS

PRE

A1) %

Rp0.2 MPa

Grade family

C

Cr

Ni

Mo

N

2205

1.4462

2205

S32205

35

20

500

D

0.02

22.4

5.7

3.1

0.17

2205 stainless steel grades	Industry Specifications	UNS
Duplex 2205 2205 (EN 1.4462/UNS S32205 & S31803) The most popular duplex product on the market. Offers very good resistance to uniform and localized corrosion and stress corrosion cracking in combination with high mechanical strength.	• Cargo tanks in chemical tankers • Pulp and paper industry applications such as digesters and process tanks • Oil and gas industry, typically tubular products, flanges, fittings and valves • Structural components in bridges	• Cold rolled coil and sheet • Hot rolled coil and sheet • Quarto plate • Bar • Wire rod • Semi-finished (bloom, billet, ingot & slab)

Performance

Elongation vs. corrosion resistance.

Elongation vs. Corrosion resistance

Strength vs. Corrosion resistance

Elongation vs. Corrosion resistance

Duplex stainless steels, known for their high chromium content, provide excellent corrosion resistance, particularly in uniform corrosion environments with rates below 0.1 mm/year. Forta DX 2205 shows superior resistance to chloride-contaminated sulfuric acid compared to traditional stainless steels like Supra 316L/4404, approaching the performance of Ultra 904L. In dilute hydrochloric acid, Forta SDX 2507 and similar high-alloyed duplex steels are suitable, though localized corrosion risks exist around crevices even within safe usage limits.

PRE values for Forta Duplex grades and some austenitic grades

Steel designations				PRE
name	EN	ASTM Type	UNS
2205	1.4462	2205	S32205	35

Results from stress corrosion cracking immersion tests in chloride solutions

name	ASTM G123		ASTM G36
	25% NaCl, pH 1.5, 106°C (b.p.), 1,000 h	40% CaCl2, 100°C, 500 h	45% MgCl2, 155°C (b.p.), 24 h
	U-bend samples	4-PB samples (90% of Rp0.2)	U-bend samples
2205	No SCC	No SCC	SCC

Mechanical properties according to EN 10088 and EN 10028

	EN	ASTM	Product form	Yield strength	Tensile	Elongation	Elongation
name		UNS		Rp0.2[MPa]	strength	A[%]	A80[%]
				Rm[MPa]
2205	1.4462	S32205	Cold rolled coil (C)	500	700–950	20	20
			Hot rolled coil (H)	460	700–950	25	25
			Quarto plate (P)	460	640–840	25	25
			Wire rod 1)	510	750	35	–
			Bar	450	650–880	25	–

Mechanical properties according to ASTM A240

	EN	ASTM	Product form	Yield	Yield	Tensile	Tensile	Elongation
name		UNS		strength	strength	strength	strength	A50[%]
				Rp0.2[MPa]	Rp0.2 [ksi]	Rm [MPa]	Rm [ksi]
2205	1.4462	S32205	Plate, sheet and strip	450	65	655	95	25
			Wire rod 1)	510	74	752	109	–

Mechanical properties at elevated temperatures, minimum yield strength according to EN 10028-7

name	Strength		100°C	150°C	200°C	250°C
2205	Yield strength	Rp0.2 [MPa]	360	335	315	300
	Tensile strength	Rm [MPa]	590	570	550	540

Physical properties

Metric values according to EN 10088-1

name	EN	ASTM Type	UNS	Density [kg/dm3]	Modulus of elasticity at 20°C [GPa]	Coefficient of thermal expansion 20–100°C [10-6/K]	Thermal conductivity at 20°C [W/(m x K)]	Thermal capacity at 20°C [J/(kg x K)]	Electrical resistivity at 20°C [Ω x mm2/m]
2205	1.4462	2205	S32205	7.8	200	13.0	15	500	0.8

Imperial values converted from Table 10

name	Density [lbm/in3]	Modulus of elasticity [psi]	Coefficient of thermal expansion 68–212°F [μin / (in x °F)]	Thermal conductivity [Btu/(hr x ft x °F)]	Thermal capacity [Btu/(lbm x °F)]	Electrical resistivity [μΩ x in]
2205	0.282	29 x 106	7.2	8.7	0.119	31.50

Fabrication

Duplex stainless steel is suitable for all forming processes used for stainless steel. The high yield strength compared to austenitic and ferritic stainless steel can however give differences in forming behavior. Depending on the chosen forming technique there could be consequences, such as increased springback. This point is particularly relevant to the forming of any high strength steel. Moreover, an excellent interplay between high yield strength, work hardening rate and elongation promote the duplex grades for light weight and cost-efficient applications with complex shapes. The impact of the high strength varies for different forming techniques. Common for all is that the estimated forming forces will be higher than for the corresponding austenitic and ferritic stainless steel grades. This effect will usually be lower than expected from just the increase in strength since the choice of duplex stainless steel is often associated with gauge reduction. It is important to consider that duplex stainless steel may also be more demanding on the tools and on the lubricant. This should also be noted when looking to down gauge.

Welding consumables

name	EN	ASTM Type	UNS	Consumable ISO designation
2205	1.4462	2205	S32205	22 9 3 NL

General characteristics

Steel designations

Performance

Typical chemical composition, % by mass

name

EN

ASTM Type

UNS

PRE

A1) %

Rp0.2 MPa

Grade family

C

Cr

Ni

Mo

N

2205

1.4462

2205

S32205

35

20

500

D

0.02

22.4

5.7

3.1

0.17