PROVIDING DUPLEX AND SUPER DUPLEX STEEL PRODUCTS SINCE 1975

Duplex Steel & Alloys is a leading manufacturer and supplier of Duplex Steel S31803 Bar in Mumbai, India. Our duplex steel bars are globally recognized for their exceptional strength, corrosion resistance and performance in demanding environments such as marine, chemical, oil & gas and power industries. With international certifications like ISO 9001, PED and ASME, we ensure our bar meets the highest quality standards.

Duplex Steel S31803 Bars

Chemical Composition

The high performance of duplex steel S31803 bar is derived from their unique chemical composition:

  • Chromium (21-23%): They demonstrate excellent corrosion protection, especially in chloride conditions, increasing product life in severe conditions.
  • Molybdenum (2.5-3.5%): Improves its resistance to pitting and crevice corrosion making it suitable for marine and chemical applications.
  • Nitrogen (0.14-0.20%): Improves tensile strength and localised corrosion resistance so as to provide structural reliability in various applications.

This balanced composition delivers a dual-phase microstructure that combines the toughness of austenitic, duplex steel with the strength of ferritic grades.

Mechanical Properties and Their Advantages

  • Tensile Strength: 620 MPa minimum – Ensures reliable performance under high-pressure conditions, such as oil platforms and chemical reactors.
  • Yield Strength: 450 MPa minimum– Offers excellent load-bearing capacity without deformation, perfect for construction and machinery applications.
  • Elongation: Up to 25% – Provides the necessary ductility for applications requiring deformation, such as shipbuilding and forming processes.

These properties make duplex steel S31803 bar ideal for high-stress environments, combining strength and durability for long-lasting performance.

Heat Resistance and Durability

Duplex steel S31803 offers exceptional heat resistance and durability, making it an ideal choice for high-temperature applications. It exhibits excellent performance in extreme heat conditions and demonstrates strong thermal fatigue properties. This makes them suitable for use in demanding environments, where reliability and resistance to heat-induced wear and tear are crucial.

Standards Compliance

Our Duplex Steel S31803 bar conform to the following global standards, ensuring reliability and compatibility:

  • ASTM A789/A790:Standard of stainless pipes and bar- seamless and welded steel pipes and bar.
  • EN 10088: European standards for corrosion-resistant stainless steel.
  • ISO Certifications: Ensure quality management (9001), environmental responsibility (14001), and high-quality welding (3834).

These standards ensure our bar' uniformity, reliability, and global applicability.

Applications Across Industries

  • Oil & Gas:The materials need high corrosion resistance, H₂S stress corrosion cracking resistance, and high-pressure performance, making them ideal for offshore rigs, pipelines, and separators.
  • Chemical Processing: S31803 resists acids and alkalis while providing non-contaminating surfaces, making them suitable for applications such as reactors, storage tanks and heat exchangers.
  • Shipbuilding: Duplex steel S31803 is resistant to seawater, has high toughness, and can handle large dimensions, making it ideal for hulls, decks and bulkheads.
  • Power Generation: S31803 offers excellent resistance to high temperatures and pressures, along with thermal fatigue resistance, making it ideal for applications in boilers, turbines and condensers.

Third-Party Testing for Reliability

To guarantee the quality and performance of our duplex steel S31803 bar, we employ various third-party testing:

  • Positive Material Identification (PMI): Confirms the chemical composition to meet duplex S31803 grade requirements, ensuring material identification during manufacturing and supply.
  • Hydrostatic Testing: Verifies the pressure containment capability and performance for leak-tight operation in pipelines and pressure vessels.
  • Radiographic Testing: Identifies internal flaws like cracks or voids, thereby guaranteeing the strength of high-risk structures including marine vessels and offshore platforms.

These tests enhance trust and provide transparency to customers across industries.

Comparison: S31803 vs. 32205

While S31803 and 32205 share similar chemical properties, the slight differences make 32205 preferable for applications demanding higher mechanical strength and corrosion resistance. However, S31803 offers a cost-effective solution without significant compromise on performance, making it ideal for general-purpose applications.

Logistics and Product Documentation

We prioritize seamless delivery and provide complete documentation, including Mill Test Certificates (MTC) to verify compliance with ASTM and EN standards, packing lists and invoices for traceability of international and domestic shipments and third-party inspection reports available upon request for maximum transparency. Our dedicated logistics team ensures timely delivery, efficiently handling bulk orders and custom dimensions to meet project deadlines, ensuring a smooth and reliable experience for all our customers.

Why Choose Duplex Steel & Alloys?

Our commitment to certified excellence is reflected in our ISO 9001, PED and ASME certifications, ensuring top-notch quality and performance. As a trusted supplier in India and global markets, we provide various duplex steel and alloys. We offer tailored solutions with bar in various dimensions, surface finishes and treatments to meet your needs, ensuring the best fit for every project.

For Duplex Steel S31803 bar that deliver exceptional strength, corrosion resistance and a long lifecycle, Duplex Steel & Alloys is your trusted partner. Contact us today for a customised quote or more information.


Duplex Steel S31803 Round Bar Specifications

Specifications ASTM A276, ASTM A479, AMS 5513, AMS 5511, AMS 5647
Dimension Standard EN, DIN, JIS, ASTM, BS, ASME, AISI
Bar Diameter 3 ~ 800mm
Hex Bar size 2-100mm A/F
Flat bar size Thickness: 2 -100mm.
Width: 10 to 500mm.
Square bar size 4 to 100mm
Rectangular Bars Size: 33 x 30mm to 295 x 1066mm.
Thickness: 3.0 to 12.0mm.
Hollow Bars 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Billet Size 1/2 to 495mm Diameter
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
Tolerance H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients requirements
Bar Surface Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Rolled Bars Condition Hardened & tempered, annealed
Cold Rolled Bar Technique Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
Form Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc.

Types of Duplex Steel S31803 Bars

Hot Rolled Bar

Duplex Steel S31803 Hot Rolled Bar

Cold Rolled Bar

Duplex Steel S31803 Cold Rolled Bar

Round Bar

Duplex Steel S31803 Round Bar

Square Bar

S31803 Duplex Steel Square Bar

Flat Bar

Duplex Steel S31803 Flat Bar

Hexagon Bar

S31803 Duplex Steel Hexagon Bar

Rectangular Bar

ASTM A276 Duplex Steel S31803 Rectangular Bar

Forged Bar

S31803 Duplex Stainless Steel Forged Bar

Bright Bar

UNS S31803 Bright Bar

Threaded Rod

Duplex Steel S31803 Threaded Rod

Black Bar

Duplex Steel S31803 Black Bar

Hollow Bar

Duplex Steel S31803 Hollow Bar

S31803 Duplex Steel Round Bar Equivalent Material

STANDARD WERKSTOFF NR. UNS
Duplex Steel 1.4462 S31803

DSS S31803 Round Bar 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

Duplex Steel S31803 Round Bar Mechanical Properties

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S31803 7.805 0.285 1420 – 1465 2588 – 2669

DSS S31803 Rod Rate, ASTM A276 UNS S31803 Bar, ASTM A479 Duplex Steel S31803 Bar, S31803 Duplex Stainless Steel Bar, Duplex Stainless Steel S31803 Rod, Duplex S31803 Rods Suppliers in Mumbai.

If you are looking for best prices for Duplex Steel S31803 Bars, Duplex S31803 Rod, DSS S31803 Flat Bar email us on info@duplexsteelalloys.com or call us on +91 9664408767

Duplex Steel S31803 Bar Price List

Product Price
Duplex Steel S31803 Round Bar Price US $999-2500 / Ton
S31803 Duplex Steel Bar Price US $1990-3900 / Ton
Duplex Steel S31803 Square Bar Price US $800-2100 / Ton
Duplex S31803 Round Bar Price in India S $1000.0-3000.0 / Ton
Duplex Stainless Steel S31803 Hex Bar Price US $300-2700 / Ton
Duplex Steel S31803 Rod Rate US $1000-2500 / Ton
Duplex Stainless Steel S31803 Triangle Bar Price US $1500-2600 / Ton
S31803 Duplex Stainless Steel Rectangular Bar Prices US $2200-4000 / Ton
DSS S31803 Bright Bar Price List US $1.2-4.7 / Kilogram
Duplex Stainless Steel Rod S31803 Price Per KG in India US $1,600.00-2,200.00 / Ton

Duplex S31803 Rod Standard Sizes

Duplex S31803 Rod Standard Sizes
Type Sizes in milimeter Sizes in inches Tolerance
Peeled and Polished 40.00 - 150.00 1.50 - 6.00 h11, h11-DIN 1013
Cold Drawn and Polish 3.00 to 75.00 1/8 to3.00 h8 to h11
Cold Drawn and Ground 10.00 to 75.00 5/6 to 2.50 h8 to h11
Peeled nd Ground 20.00 - 50.00 3/4 - 2.00 h9 to h11

Duplex S31803 Round Bars Standard lengths of 2000 mm up to 6000 mm.

5.0 45.0
6.0 50.0
7.0 55.0
8.0 60.0
9.0 65.0
10.0 70.0
12.0 75.0
16.0 80.0
20.0 90.0
25.0 100.0
30.0 130.0
35.0 160.0
40.0 200.0

Duplex S31803 Round Bar Weight Chart

Diameter Weight Chart Dia Weight Chart
(mm) per metre (kg) (in) per metre (kg)
3mm 0.06 1/8" 0.06
4mm 0.10 3/16" 0.14
5mm 0.16 1/4" 0.25
6mm 0.22 5/16" 0.39
7mm 0.30 3/8" 0.56
8mm 0.40 7/16" 0.77
10mm 0.62 1/2" 1.00
12mm 0.89 9/16" 1.22
14mm 1.22 5/8" 1.56
15mm 1.40 11/16" 1.89
16mm 1.59 3/4" 2.25
18mm 2.01 7/8" 3.07
20mm 2.48 1" 4.03
22mm 3.00
24mm 3.57
25mm 3.88

S31803 Duplex Steel Bar Dimensions

Diameter or
Width
(mm)
Weight per meter Sectional Area Perimeter
Square
(kg)
Round
(kg)
Square
(cm²)
Round
(cm²)
Square
(cm)
Round
(cm)
5.0 0.20 0.15 0.25 0.20 2.0 1.57
5.5 0.24 0.19 0.30 0.24 2.2 1.78
6.0 0.28 0.22 0.36 0.28 2.4 1.88
7.0 0.38 0.30 0.49 0.38 2.8 2.20
8.0 0.50 0.39 0.64 0.50 3.2 2.51
9.0 0.64 0.50 0.81 0.64 3.6 2.83
10 0.73 0.63 1.00 0.79 4.0 3.14
11 0.95 0.75 1.21 0.95 4.4 3.46
12 1.13 0.89 1.44 1.13 4.8 3.77
14 1.54 1.21 1.96 1.54 5.6 4.40
16 2.01 1.58 2.56 2.01 6.4 5.03
18 2.54 2.00 3.24 2.54 7.2 5.65
20 3.14 2.47 4.00 3.14 8.0 6.28
22 3.80 2.98 4.84 3.80 8.8 6.91
25 4.91 3.85 6.25 4.91 10.0 7.85
28 6.15 4.83 7.84 6.16 11.2 8.80
32 8.04 6.31 10.24 8.04 12.8 10.05
36 10.17 7.99 12.96 10.18 14.4 11.31
40 12.56 9.86 16.00 12.57 16.0 12.57
45 15.90 12.49 20.25 15.90 18.0 14.14
50 19.62 15.41 25.00 19.64 20.0 15.71
56 24.62 19.34 31.36 24.63 22.4 17.59
63 31.16 24.47 36.69 31.17 25.2 19.79
71 39.57 31.08 50.41 39.59 28.4 22.31
80 50.24 39.46 64.00 50.27 32.0 25.13

Ask Free Sample of Duplex Steel S31803 Bar, Rods, Round Bar Please Call +91 9664408767

Stock available for Range of Duplex Steel S31803 Bar

  • Duplex S31803 Rod
  • 1.4462 Round Rods
  • S31803 Duplex Steel Bar
  • S31803 Duplex Steel Rod
  • S31803 12mm Duplex Steel Rod
  • ASTM A276 Type S31803 Duplex Steel Round Bar
  • DSS S31803 Rod Weight Chart
  • UNS S31803 Bars
  • Duplex S31803 Round Bar Weight Calculator
  • 8mm S31803 Duplex Stainless Steel Rod
  • DSS S31803 Hot Rolled Bars
  • 8mm Square Duplex Steel S31803 Bar
  • ASTM A276 Grade S31803 Hex Bar
  • Standard DSS S31803 Round Bar Sizes in mm
  • ASTM A276 S31803 Duplex Steel Bar
  • Duplex Steel S31803 Flat Bar Stock
  • Duplex Steel S31803 Flat Bar
  • Duplex Steel S31803 Round Bar Sizes
  • Duplex Stainless Steel Bar S31803
  • Duplex Steel S31803 Rod Standard Sizes
  • S31803 Duplex Steel Cold Rolled Rod
  • S31803 Duplex Steel Bar
  • Duplex Stainless Steel S31803 Bar

Tests of ASTM A276 Duplex Steel S31803 Bar

Before being prepared for shipment to the customer, ASTM A276 S31803 Duplex Steel Bars Testing should be constructed in accordance with applicable standards and thoroughly tested for potential flaws.

Compression Test

Compression Test

Bending Test

Bending Test

Impact Test

Impact Test

Torsion Test

Torsion Test

Tensile Test

Tensile Test

Brinell/Rockwell Hardness Test

Brinell/Rockwell Hardness Test

Finishes Of S31803 Duplex Steel Bar

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

Duplex Steel S31803 Bar - Comparing International Standards

USA France Germany Germany Italy Japan Russia Spain Sweden UK European Union
AISI AFNOR DIN 17006 W.N. 17007 UNI JIS GOST UNE SIS BSI EURONORM
UNS31803 X 2 CrNiMoN 22 5 1.4462
best offer & competitive quotation
call us on +91 9664408767

Duplex Steel S31803 Rods Supply in Below Countries

Products We Supplied Description Country
ASME SA276 S31803 Duplex Steel Bars 1.4462 Cold Rolled Bars New Zealand, Taiwan, Belgium, Portugal
S31803 Duplex Steel Square Bar Weight 8mm Duplex Steel S31803 Square Sar Hungary, Vietnam, Estonia, Denmark
Duplex Steel S31803 Hex Bar Sizes in MM Duplex S31803 Hexagonal Bar Slovakia, Romania, Mongolia, Yemen, Puerto Rico
ASTM A276 Duplex Stainless Steel S31803 Rods DSS S31803 3mm to 50mm Rods Belarus, Oman, South Africa, Azerbaijan, Gambia
Duplex Steel S31803 Rectangular Bars 3.0 to 12.0mm Rhickness DSS S31803 Rectangular Bar Ecuador, Czech Republic, Jordan, Nigeria, Chile
S31803 Duplex Steel Rectangular Bar DSS S31803 Cold Drawn Rectangular Bar Australia, Switzerland, Singapore, Hong Kong
Duplex Stainless Steel S31803 Round Bars UNS S31803 Hot Rolled Rods Supply Germany, Malaysia, Serbia, Venezuela
S31803 Duplex Stainless Steel Polished Bars Polished UNS S31803 Bars Bulgaria, Nepal, Kuwait, Bhutan

Common Application for Duplex Steel S31803 Rods

Power Generation

Power Generation

Construction

Construction

Shipbuilding

Shipbuilding

Aerospace

Aerospace

Heavy Equipment

Heavy Equipment

Automotive

Automotive

Chemical Processing

Chemical

Oil & Gas

Oil & Gas