Duplex Steel Bars

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Duplex Steel Bars Manufacturer & Exporter in Christchurch, New Zealand.

Duplex Steel Bars Price In New Zealand, Duplex Steel Round Bar Dealer In New Zealand, Duplex Steel Industrial Bars Exporter In New Zealand, Duplex Steel Austenitic Bar Stockist In New Zealand, Duplex Steel Bar Supplier In New Zealand, Duplex Steel Round Bar Manufacturer In New Zealand, Duplex Steel Bars Manufacturer in Auckland, New Zealand.

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We proudly provide an extensive range of Duplex Steel Bars, thoughtfully procured from respected suppliers celebrated for their expertise in producing top-grade duplex steel goods. These bars act as essential elements across numerous applications, delivering unrivaled flexibility in dimensions, grades, and compliance with industry norms to satisfy the varied requirements of our clientele. Sought after in both the construction and engineering fields, our premium Duplex Steel Bars are valued for their exceptional resistance to corrosion and wear, guaranteeing extended longevity in demanding conditions. Through the use of duplex alloys, these bars experience a transformative boost in hardenability during heat treatment, yielding consistently enhanced mechanical characteristics throughout their cross-section.

Duplex Steel Bars Specifications

Duplex Steel Bar Standard ASTM A276, AMS 5513, AMS 5511, AMS 5647
Duplex Steel Bar Dimensions EN, DIN, JIS, ASTM, BS, ASME, AISI
Duplex Steel Round bar size Diameter: 3-~800mm
Duplex Steel Hex Bar size 2-100mm A/F
Duplex Stainless Steel Flat bar size Thickness: 2 -100mm
Width: 10 to 500mm
Duplex Steel Square bar size 4 to 100mm
Duplex Steel Angle bar size 3mm*20mm*20mm~12mm*100mm*100mm
Duplex Rectangular Bars Section 3.0 to 12.0mm thickness
Duplex Steel Channel Bar 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
ASTM A276 Type Hollow Bar 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Duplex Stainless Steel Threaded Bar Billet Size 1/2 to 495mm Diameter
Duplex Steel Rectangular Size 33 x 30mm to 295 x 1066mm
Duplex Hex 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
ASTM A276 Type Hollow Bar Tolerance H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
SAF 2507 T-Bar Surface Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Rolled Duplex Steel Flat Bars Condition Hardened & tempered, annealed
ASTM A276 Type Cold Rolled Bar Technique Duplex Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
Duplex Rod Processing Bar cutting to 650mm
Duplex Rounds Bar 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.

Mechanical Properties of Duplex Steel Bars

Grade YS (MPa) UTS (MPa) % Elongation Hardness(BHN)
31803 450 min. 620 min. 25 min. 293 max.
2205 450 min. 655 min. 25 min. 293 max.

Duplex Steel Bars Chemical Composition

Grade UNS No C % Cr % Ni % P % Si % S % Mo % N % Mn %
31803 S31803 < 0.03 21.0-23.0 4.5-6.5 1.03 max 1 max 0.02 max 2.5-3.5 0.08-0.2 < 2.0
2205 S32205 < 0.03 22.0-23.0 4.5-6.5 0.03 max 1 max 0.02 max 3.0-3.5 0.14-0.20 < 2.0

Duplex Steel Industrial Bars Price In New Zealand, Duplex Steel Austenitic Bar Exporter In New Zealand, Duplex Steel Bar Dealer In New Zealand, Duplex Steel Bar Price In New Zealand, Duplex Steel Bars Manufacturer in Christchurch, New Zealand.

Top Duplex Steel Bars Manufacturing Company in Auckland

At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With cutting-edge production facilities strategically situated in the New Zealand, we hold an extensive stock of more than 25,000 tons of top-quality materials kept readily on hand.

Available Duplex Steel Bars Grades

Reach out to us for a fast quote tailored to your requirement.

We provide these Duplex Steel Bars in accordance with DIN, ISO, JIS or ANSI Standard.

Get the best price from Duplex Steel Bars manufacturers & stockist in New Zealand, check Duplex Steel Bight Bars price per kg in Auckland

Advantages of Duplex Steel Bars

Advantages of Duplex Steel Bars
  • Corrosion resistance: Duplex steel bars provide superior resistance to corrosion when set against ordinary austenitic stainless steel, particularly in chloride-rich, acidic seawater conditions
 
  • High strength: Duplex steel bars possess greater tensile and yield strength than austenitic stainless steel, which makes them well-suited for uses that demand strong mechanical characteristics
 
  • Highly durable: The two-dimensional steel demonstrates solid strength and flexibility even under low temperatures, rendering it appropriate for use in demanding settings and cryogenic settings
 
  • Cost Effectiveness: Even with outstanding properties, double-sided steel frames can prove more economical than other stainless steel alloys, achieving a balance between performance and cost among the strong
 
  • Good weldability: Duplex steel bars typically show good weldability, which makes them simple to manufacture and fabricate across a range of applications without sacrificing structural integrity.

Types of Duplex Steel Bars

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Duplex Steel Round Bars
Duplex Steel Bars
Duplex-Round-Bars-In-New Zealand
Duplex Round Bars
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Duplex Bars
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Duplex Steel Bars
Duplex S32205 Bars

Duplex Round Bar Manufacturer & Supplier Of Duplex Steel Square Bar & Hot Rolled Bar In Christchurch, New Zealand.

Duplex Steel Bars Uses

Application Industry

Duplex Steel Bars serve applications as varied as the sectors they support, led chiefly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Chemical applications

Marine Industries

Oil and Gas Industry

Desalination equipment

  • Chemical applications: Double-sided steel plates serve in medical equipment like vessels, tubes, pipes and pumps thanks to their ability to withstand acids, chlorides and other dangerous chemicals.
 
  • Oil and Gas Industry: Duplex steel bars serve the oil and gas industry in pipelines, risers, valves and offshore platforms where corrosion resistance, high strength, and protection against stress corrosion cracking (SCC) in saline conditions ) will be provided
 
  • Marine Industries: Two-dimensional steel is applied in shipbuilding, offshore structures and marine equipment owing to its seawater corrosion resistance and enhanced strength and weight, strength and dependability in demanding marine settings
 
  • Desalination equipment: Desalination facilities rely on two-dimensional steel plates for pumps, heat exchangers, pipes and additional components, where stable salt water and high corrosive temperatures tip
 
  • Pulp and Paper Industry: Duplex steel strips are used in the pulp and paper industry for equipment like digesters, bleachers, towers and evaporators, where they resist corrosion from the chemicals involved in papermaking
 
  • Mining and Mineral Processing: Duplex steel bars are employed for crushers, screens, chutes and conveyor systems within the mining industry, where they endure abrasive wear and corrosion from mineral slurries and chemicals.

How to Choose the Right Duplex Steel Bars

  • Define application requirements: Gain a clear picture of what your application demands, taking into account aspects like corrosion resistance, internal mechanical properties, temperature, and environmental conditions.
 
  • Grade Selection: Choose the right duplex steel grade to match your application’s needs. Common options include Duplex 2205, Duplex 2507, and others. Weigh aspects such as corrosion resistance, strength, and cost-effectiveness.
 
  • Water resistance: Assess the corrosion resistance of the duplex steel and pick the required grade of corrosion resistance, such as pitting, crevice corrosion, and stress corrosion cracking, according to the environmental exposure between them (e.g., seawater, chemicals, acids ).
 
  • Mechanical properties: Take into account the mechanical properties needed from duplex steel, such as tensile strength, yield strength, stretchability, and shock resistance. Pick the grade of strength and stiffness that suits your needs.
 
  • Weldability: Should your application involve welding or fabrication processes, factor in the weldability of duplex steel bars. Opt for a grade with good weldability to ensure straightforward installation and preserve the integrity of welded joints.

Can Duplex Steel Bars be recycled after use?

Yes,Duplex stainless steel bars can be recycled once they have been used. Stainless steel, Duplex steel included, is highly recyclable and can be melted down and repurposed into new products without losing its inherent properties. Recycling stainless steel is a sustainable practice that helps preserve resources and lessens the environmental impact of mining and producing new materials. On top of that, the recycling process for stainless steel uses less energy than creating new stainless steel from raw materials, making it an environmentally friendly choice.

FAQ (Frequently Asked Questions)

Can Duplex Steel Bars be welded?

Yes, Duplex Steel Bars are weldable through standard welding techniques including gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), shielded metal arc welding (SMAW), and submerged arc welding (SAW). That said, it’s essential to adhere to correct welding practices in order to preserve the material’s resistance to corrosion and its mechanical characteristics.

How do Duplex Steel Bars compare to other stainless steel grades?

Duplex Steel Bars provide benefits over austenitic stainless steels through greater strength and improved resistance to stress corrosion cracking, particularly in chloride environments. Duplex Steel Bars deliver better toughness and flexibility than ferritic stainless steel.

What precautions should be taken when machining Duplex Steel Bars?
Machining Duplex Steel Bars call for sufficient cooling and lubrication to reduce heat accumulation and prevent work hardening. Furthermore, choosing suitable cutting tools and keeping the right cutting speeds and feeds are crucial for attaining a quality surface finish and dimensional precision.

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