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Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004Advanced Fastening Solutions’ designed to deliver high-performance under a hostile environment is what we at Tubotech, a leading pipe and tubing manufacturer in India pride ourselves in doing. More importantly, we ensure that Duplex 31803/32205 Stainless Steel fasteners are manufactured using dual-phase alloy. Typically, they integrate the power of ferritic stainless-steel with the corrosion resistance of austenitic grades.
Our Duplex 31803/32205 Stainless Steel fasteners are renowned for their high-quality mechanical power, high corrosion resistance, and amazing sturdiness.. Specifically in an extreme environment that involves high temperatures and high pressure.
Above all, we at Tubotech,a top pipe and tubing manufacturer in India seek to offer high-quality and affordable Duplex 31803/32205 Stainless Steel fasteners which you cannot ‘Refuse’ because of its long term durability in extreme conditions.
Like most fastening solutions, Duplex 31803/32205 Stainless Steel fasteners have a lot of specifications. They are given in the table below:
| Property | Details |
|---|---|
| Standards | ASTM A182, ASTM A276, ASTM A479, ASTM A193 B8, A194 |
| Grades | UNS S31803 / UNS S32205 (commonly interchangeable) |
| Material Type | Duplex Stainless Steel (ferritic-austenitic) |
| Product Forms | Bolts, Nuts, Screws, Studs, Washers, Threaded Rods |
| Available Sizes | M6 to M100 (1/4” to 4”) or custom sizes |
| Threads | Metric, UNC, UNF, BSW, or as per requirement |
| Finish | Plain, Passivated, PTFE Coated, Zinc Plated |
It is the chemical content of Duplex 31803/32205 Stainless Steel fasteners which essentially provides it with superior corrosion resistance and strength. They are given in the table given below which includes the types of Duplex 31803/32205 Stainless Steel fasteners:
| Element | S31803 (% Range) | S32205 (% Range) |
|---|---|---|
| Chromium (Cr) | 21.0 – 23.0 | 22.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 | 3.0 – 3.5 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 |
| Carbon (C) | ≤ 0.030 | ≤ 0.030 |
| Nitrogen (N) | 0.14 – 0.20 | 0.14 – 0.20 |
| Phosphorus (P) | ≤ 0.030 | ≤ 0.030 |
| Sulfur (S) | ≤ 0.020 | ≤ 0.020 |
| Iron (Fe) | Balance | Balance |
The Duplex 31803/32205 Stainless Steel fasteners are renowned for their high corrosion resistance, toughness, and strength because of their mechanical properties. They are given in a table below:
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 620 MPa (90 ksi) |
| Yield Strength (0.2% offset) | ≥ 450 MPa (65 ksi) |
| Elongation (in 50 mm) | ≥ 25% |
| Hardness (Brinell) | ≤ 290 HB |
| Impact Toughness | ≥ 74 J at -46°C (Charpy V-notch) |
| Modulus of Elasticity | ~200 GPa (29,000 ksi) |
| Poisson’s Ratio | ~0.3 |
| Density | ~7.8 g/cm³ |
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
There are essentially 5 types of Duplex 31803/32205 Stainless Steel fasteners and several subtypes. They are given below:
Like most piping and tubing components, Duplex 31803/32205 Stainless Steel fasteners are available in various sizes. They are given in table below:
| Fastener Type | Diameter Range | Length Range | Notes |
|---|---|---|---|
| Bolts / Screws | M6 to M100 (¼″ to 4″) | 10 mm to 1000 mm (⅜″ to 40″) | Hex, socket head, pan head, etc. |
| Nuts | M6 to M100 (¼″ to 4″) | — | Includes hex, heavy hex, flange, etc. |
| Stud Bolts | M6 to M100 (¼″ to 4″) | Up to 2000 mm (80″) | Full/partial threaded, double-end, etc. |
| Threaded Rods | M6 to M100 (¼″ to 4″) | Up to 3000 mm (120″) | Available in standard and custom lengths |
| Washers | For M6 to M100 fasteners | Thickness: 1 mm to 5 mm+ | Plain, spring, lock, and special types |
Duplex 31803/32205 Stainless Steel fasteners are available in different weights depending on the types. They are given in a tabular form given below:
| Diameter (mm) | Length (mm) | Approx. Weight (kg/100 pcs) |
|---|---|---|
| M6 | 20 | 1.2 |
| M8 | 25 | 2.3 |
| M10 | 30 | 4.0 |
| M12 | 40 | 6.5 |
| M16 | 50 | 11.5 |
| M20 | 60 | 18.7 |
| M24 | 80 | 28.9 |
| M30 | 100 | 47.5 |
| M36 | 120 | 69.3 |
| Size | Approx. Weight (kg/100 pcs) |
|---|---|
| M6 | 0.3 |
| M8 | 0.6 |
| M10 | 1.0 |
| M12 | 1.8 |
| M16 | 3.5 |
| M20 | 6.5 |
| M24 | 10.0 |
| M30 | 17.0 |
| M36 | 25.0 |
| Diameter (mm) | Length (1 meter) | Approx. Weight (kg/m) |
|---|---|---|
| M6 | 1000 mm | 0.25 |
| M8 | 1000 mm | 0.40 |
| M10 | 1000 mm | 0.63 |
| M12 | 1000 mm | 0.92 |
| M16 | 1000 mm | 1.65 |
| M20 | 1000 mm | 2.60 |
| M24 | 1000 mm | 3.75 |
| M30 | 1000 mm | 6.00 |
Due to the high strength and superior corrosion resistance of Duplex 31803/32205 Stainless Steel fasteners they are used in a wide range of industrial applications. They are as follows:
There is not just one but more than one ‘Reason’ why you must choose Duplex 31803/32205 Stainless Steel fasteners for your business. They are given below:
Choose Tubotech for your subsequent project concerning Duplex 31803/32205 Stainless Steel fasteners and benefit from reliability and quality. Whether your requirement is small batch or bulk export, our technical institution is here to help you.
Tubotech delivers precision-engineered tubing, fittings, and fasteners with innovative solutions and customizable options. Trusted for quality and durability, we serve industries requiring reliable, high-performance piping and instrumentation products.