-
Email
sales@tubotechalloys.com -
Phone
+91 9769961320 -
Address
Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004
Phone
+91 9769961320Address
Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004Our main objective at Tubotech a top piping and tubing manufacturer in India is to deliver for your business high-quality and cost-efficient B8 Stainless Steel fasteners. They have been specifically designed by us for industrial applications used in hostile environments. Besides, we have manufactured them using AISI 304 stainless steel which is heat treated to enhance the strength significantly.
We also ensure that our B8 Stainless Steel fasteners comply with ASTM A193 Grade B8 specifications. A major reason why they are a piping and tubing choice that you can trust for a wide range of industries.
So, whether it is bolts, nuts, studs, or custom components, we at Tubotech a leading piping and tubing manufacturer in India seek to deliver certified, precision-engineered B8 fasteners.
There are few important specifications of B8 Stainless Steel fasteners that you need to know about. They are given in the table below:
| Property | Details |
|---|---|
| Standard | ASTM A193 Grade B8 |
| Material | AISI 304 Stainless Steel (Class 1: strain-hardened, Class 2: solution-treated) |
| Common Forms | Bolts, Studs, Threaded Rods, Nuts, Washers |
| Thread Type | UNC / UNF / Metric (Coarse & Fine) |
| Size Range (Metric) | M6 to M56 |
| Size Range (Inch) | 1/4″ to 2″ |
| Length Range | 6 mm to 300 mm (or custom lengths) |
| Tensile Strength | 75 ksi (Class 1), 100 ksi (Class 2) |
| Yield Strength | 30 ksi (Class 1), 65 ksi (Class 2) |
| Hardness | Max 223 HBW (Class 1), Max 321 HBW (Class 2) |
| Temperature Range | Up to 870°C (1600°F) |
| Corrosion Resistance | Excellent in oxidizing environments; suitable for water, chemical, and mild acidic exposures |
| Magnetic Properties | Generally non-magnetic (may become slightly magnetic after cold working) |
| Applications | Pressure vessels, valves, flanges, pumps, heat exchangers, piping systems |
There are many chemical content that make up B8 Stainless Steel fasteners and ensure their durability. They are given in the table below:
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 11.0 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
For all details on the mechanical properties of B8 Stainless Steel fasteners please refer to the table below:
| Property | Class 1 (Strain Hardened) | Class 2 (Solution Annealed + Strain Hardened) |
|---|---|---|
| Tensile Strength | ≥ 75 ksi (515 MPa) | ≥ 100 ksi (690 MPa) |
| Yield Strength (0.2%) | ≥ 30 ksi (205 MPa) | ≥ 65 ksi (450 MPa) |
| Elongation (in 4D) | ≥ 30% | ≥ 15% |
| Reduction of Area | ≥ 50% | ≥ 35% |
| Hardness (Brinell) | ≤ 223 HBW | ≤ 321 HBW |
| Hardness (Rockwell B) | Approx. ≤ 95 HRB | Approx. ≤ 35 HRC |
| Operating Temp. Range | Up to 870°C (1600°F) | Up to 870°C (1600°F) |
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
There are a few types and sub-types of 904L Stainless Steel fasteners available. They are as given below:
B8 Stainless Steel fasteners are normally available in various ‘Sizes’ depending on their types. They are given below:
| Fastener Type | Metric Sizes | Inch Sizes | Length Range |
|---|---|---|---|
| Bolts (Hex / Socket) | M6 to M56 | 1/4″ to 2″ | 6 mm to 300 mm (1/4″ to 12″) |
| Stud Bolts | M6 to M48 | 1/4″ to 2″ | 20 mm to 1000 mm (3/4″ to 40″) |
| Threaded Rods | M6 to M48 | 1/4″ to 2″ | 1 m, 2 m, and custom lengths |
| Nuts (ASTM A194 Gr. 8) | M6 to M56 | 1/4″ to 2″ | – |
| Washers | M6 to M56 | 1/4″ to 2″ | – |
| Screws (Machine / Cap) | M3 to M24 | #6 to 1″ | 6 mm to 150 mm (1/4″ to 6″) |
The weight of B8 Stainless Steel fasteners depending on types is given in the table below:
| Bolt Size | Length (mm) | Approx. Weight / 100 pcs (kg) |
|---|---|---|
| M6 | 20 | 1.30 |
| M8 | 30 | 2.40 |
| M10 | 40 | 4.50 |
| M12 | 50 | 6.90 |
| M16 | 60 | 12.20 |
| M20 | 80 | 19.80 |
| Nut Size | Approx. Weight / 100 pcs (kg) |
|---|---|
| M6 | 0.30 |
| M8 | 0.50 |
| M10 | 0.85 |
| M12 | 1.25 |
| M16 | 2.20 |
| M20 | 3.60 |
| Rod Diameter | Length (1 meter)L | Approx. Weight (kg/m) |
|---|---|---|
| M6 | 1000 mm | 0.25 |
| M8 | 1000 mm | 0.40 |
| M10 | 1000 mm | 0.65 |
| M12 | 1000 mm | 0.95 |
| M16 | 1000 mm | 1.60 |
| M20 | 1000 mm | 2.50 |
| Washer Size | Approx. Weight / 100 pcs (kg) |
|---|---|
| M6 | 0.14 |
| M8 | 0.22 |
| M10 | 0.36 |
| M12 | 0.55 |
| M16 | 0.88 |
It is because of properties such as high corrosion resistance, high-temperature strength, and mechanical reliability that B8 Stainless Steel fasteners are used in wide range of industrial applications:
There are many reasons why clients trust Tubotech, a lead tube and piping manufacturer in India and choose us for B8 Stainless Steel fasteners. They are given below:
Choose Tubotech for your subsequent project concerning B8 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.