ASTM A193 GR B8MA Bolts, ASTM A193 GR B8MA Stud Bolts, Heavy Hex Bolts & B8MA Bolting Supplier in Mumbai, India
Unifit Metal Alloys is a manufacturer, supplier, stockist and exporter of ASTM A193 GR B8MA Bolts in Mumbai, India, supplying stainless steel bolting components for pressure equipment, piping assemblies, valves, flanges and industrial systems. These fasteners are manufactured from corrosion-resistant austenitic stainless steel and are selected for applications where dependable mechanical performance and resistance to demanding service environments are required. We supply different diameters, lengths, thread forms and configurations for standard and customized requirements.
ASTM A193 GR B8MA Bolts are processed to provide reliable strength and fastening performance in pressure and temperature applications. Their stainless steel construction provides resistance to corrosion, moisture and various industrial process environments. These bolts are used in flanged connections and other bolted assemblies where maintaining secure clamping force and long-term material durability is important.
ASTM A193 GR B8MA Bolts, ASTM A193 GR B8MA Stud Bolts, Heavy Hex Bolts & B8MA Bolting Manufacturer and Supplier in Mumbai, India
B8MA bolting can be used across chemical processing plants, oil and gas facilities, refineries, petrochemical units, power-generation equipment, pressure vessels, industrial piping and marine applications. The corrosion-resistant nature of stainless steel makes these fasteners suitable for assemblies exposed to moisture and aggressive service conditions. Grade and dimensions can be selected according to the application, operating environment and required fastening performance.
At Unifit Metal Alloys, we supply ASTM A193 GR B8MA Bolts in various sizes, lengths, thread configurations and surface finishes. We cater to maintenance requirements, fabrication work, bulk orders and industrial projects.
Get the Best Quote for ASTM A193 GR B8MA Bolts. We Stock ASTM A193 GR B8MA Bolts in Various Diameters, Lengths, Thread Sizes, Specifications and Surface Finishes. Contact Us Today for a Competitive Quote.
ASTM A193 GR B8MA Bolts Material Specifications
| Material Type | Molybdenum-Alloyed Austenitic Stainless Steel (Post-Fabrication Annealed) |
|---|---|
| UNS Number | S31600 |
| Corresponding Nut Grade | ASTM A194 Grade 8MA |
| Density | 8.00 g/cm³ (8,000 kg/m³) |
| Service Temperature Limit | Up to 815°C (1500°F) – Dependent on ASME Boiler & Pressure Vessel Codes |
| Magnetic Permeability | Strictly Non-Magnetic (Residual magnetism removed via final anneal) |
| Pitting Resistance (PREN) | 23.0 – 28.5 (Highly resistant to chloride attack) |
Chemical Composition for ASTM A193 GR B8MA Bolts
| Grade | C (Max) | Cr | Ni | Mo (Molybdenum) | Mn (Max) | Si (Max) | P / S (Max) |
|---|---|---|---|---|---|---|---|
| B8MA (S31600) | 0.08% | 16.0 – 18.0% | 10.0 – 14.0% | 2.00 – 3.00% | 2.00% | 1.00% | 0.045% / 0.030% |
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Mechanical Properties of ASTM A193 GR B8MA Bolts
| Diameter Size Range | Tensile Strength (Min) | Yield Strength (0.2% Offset) | Elongation (in 4D) | Reduction of Area | Max Hardness |
|---|---|---|---|---|---|
| All Diameters | 75,000 psi (515 MPa) | 30,000 psi (205 MPa) | 30% Min | 50% Min | 90 HRB (192 HBW) |
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ASTM A193 GR B8MA Bolts Application Industries
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