Unifit Metalloys Inc. is a reliable supplier of SA 193 GR B7 fasteners designed to perform well in high-temperature and heavy welding applications. Made with molybdenum, these fasteners provide strong resistance to nitric acid and other harsh chemicals which makes them a great fit for extreme working conditions. Our ASTM A193 Grade B7 fasteners including bolts, nuts and screws are built for durability. With a high level of chromium and nickel they offer excellent oxidation resistance and long-lasting performance even in corrosive environments.
Alloy Steel ASTM A193 Grade B7 Hex Head Bolts are built to handle tough industrial conditions. They resist sulfurous gases even at temperatures over 900°C which makes them a strong choice for extreme environments. Alloy Steel ASTM A193 Grade B7 Hex Head Screws come with thermal spray coatings that protect the steel from wear at high temperatures and help the fasteners last longer.
ASTM A193 Grade B7 washers are made with careful control of carbon silicon and phosphorus to keep the structure stable and avoid carbide build-up. A193 GR B7 fasteners also offer great resistance to intergranular corrosion pitting and stress corrosion cracking so they stay reliable even under high pressure.
ASTM A193 Grade B7 hex head nuts are known for their strength and corrosion resistance making them important for industries that need reliable performance in extreme conditions. SA 193 GR B7 fasteners are widely used in petrochemical aerospace and power generation industries because of their durability and dependable performance.
Request QuoteWhat is ASTM A193 Grade B7?
ASTM A193 Grade B7 is made from chromium molybdenum alloy steel and works great in high pressure high temperature setups. It’s strong, reliable and handles corrosion without much trouble. You’ll find ASTM A193 Grade B7 fasteners like bolts, nuts, screws and washers in places where the heat gets close to 1100°F or 593°C. Even in rough environments with sulfurous gases or strong chemicals these fasteners stay tough and do their job without giving up. These fasteners show up a lot in industries like petrochemical oil and gas and power generation. They get used in things like pressure vessels, valves and piping that deal with a lot of heat. What makes them so useful is how well they handle corrosion and tough conditions. They help things run safely and reliably especially when the environment is harsh and there's no room for failure.
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Types of ASTM A193 B7 Fasteners
ASTM A193 B7 fasteners come in many types to fit different industrial and high stress uses. Made from chromium molybdenum alloy steel these SA 193 GR B7 fasteners go through heat treatment to boost their strength, resist corrosion and stay durable in tough conditions. Here are some of the most common types of A193 GR B7 fasteners you’ll find:
- ASTM A193 B7 Structural Bolts
- ASTM A193 B7 Heavy Hex Bolts
- ASTM A193 B7 Hex Bolts
- ASTM A193 B7 Hexagon Head Bolts
- ASTM A193 B7 Machine Bolts
- ASTM A193 Grade B7 T Bolts
- ASTM A193 Gr. B7 Eye Bolt
- ASTM A193 B7 Foundation Bolts
- Alloy Steel A193 Gr B7 J Bolts
- ASTM A193 B7 Button Head Bolt
- ASTM A193 B7 Anchor Bolts
- ASTM A193 B7 Long Bolts
- ASTM A193 B7 Carriage Bolt
- ASTM A193 B7 Elevator Bolt
- ASTM A193 B7 Timber Bolts
- ASTM A193 B7 Square Bolt
- ASTM A193 B7 Metric Bolt
- ASTM A193 B7 Plow Bolts
- Alloy Steel Gr. B7 U Bolts
- ASTM A193 B7 Flange Bolts
- ASTM A193 B7 Socket Set Screw
- ASTM A193 B7 Self Drilling Screw
- ASTM A193 B7 Socket Head Cap Screw
- ASTM A193 B7 Hex Head Screws
- ASTM A193 B7 Wood Screw
- ASTM A193 Gr. B7 Eye Screw
- ASTM A193 Gr. B7 Wing Screw
- ASTM A193 B7 Self Tapping Screws
- ASTM A193 Gr. B7 Roofing Screw
- ASTM A193 B7 Phillips Head Screw
- ASTM A193 B7 Decking Screw
- ASTM A193 B7 Machine Screw
- ASTM A193 B7 Thumb Screw
- ASTM A193 B7 Drywall Screws
- ASTM A193 B7 Chipboard Screw
- ASTM A193 B7 Metric Set Screws
- Alloy Steel B7 Sems Screw
- ASTM A193 B7 Thread Rolling Screw
- ASTM A193 B7 Full Threaded Stud Bolts
- ASTM A193 B7 Half Threaded Stud Bolts
- Alloy Steel ASTM A193 B7 Threaded Rod
- ASTM A193 B7 Double Ended Studs
- ASTM A193 B7 Tap End Stud Bolt
- Alloy Steel ASTM A193 B7 Tie Rods
- Alloy Steel A193 Grade B7 Studs
- ASTM A193 B7 Single End Stud Bolts
- A193 Gr.B7 Reduced Shank Stud Bolt
- A193 B7 Continuous Threaded Stud Bolt
- A193 B7 Partial Threads Stud Bolt
- SA193 / A193 B7 Heavy Stud Bolts
Unifit Metalloys Inc offers a full range of ASTM A193 B7 fasteners made to meet global standards. These fasteners deliver strong mechanical properties, high tensile strength and can handle high temperatures making them a reliable choice for tough industrial jobs.
ASTM A193 B7 Chemical Composition
The name B7 comes from the special alloy mix in SA 193 GR B7 which includes chromium and molybdenum. This combo gives the fasteners great heat resistance strength and protection against corrosion. That’s why A193 B7 fasteners work so well in places where high performance and reliability really matter under extreme conditions.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | 0.37 | 0.49 |
| Manganese (Mn) | 0.65 | 1.10 |
| Phosphorus (P) | — | 0.035 |
| Sulfur (S) | — | 0.040 |
| Silicon (Si) | 0.15 | 0.35 |
| Chromium (Cr) | 0.75 | 1.20 |
| Molybdenum (Mo) | 0.15 | 0.25 |
ASTM A193 Grade B7 Raw Material
The table below shows the main material properties that make it perform well in tough and demanding applications.
| Grade | Raw Material Description |
|---|---|
| ASTM A193 B7 | Alloy steel, AISI 4140/4142 quenched and tempered |
ASTM A193 Grade B7 Material Specification for Fasteners
The table below shows the main material properties that make it perform well in tough and demanding applications.
| Specification | Details |
|---|---|
| Specifications | ASTM A193 / ASME SA193 |
| Length | 3mm to 200mm |
| Size | 3/6″ to 2″, M3 – M56, Custom Sizes |
ASTM A193 Grade B7 Material Properties of Fasteners
ASTM A193 Grade B7 fasteners are known for their high tensile and yield strength. They stand up well to stress and corrosion and keep performing even in high heat. That’s why they’re often the top choice for critical applications where reliability and long term durability really matter.
| Size | Tensile Strength (ksi, min) | Yield Strength (ksi, min) | Elongation (%) min | Reduction of Area (%) min | Hardness (Max) |
|---|---|---|---|---|---|
| Up to 2-½ inches | 125 | 105 | 16 | 50 | C35 |
| 2-5/8 to 4 inches | 115 | 95 | 16 | 50 | C35 |
| 4-1/8 to 7 inches | 100 | 75 | 18 | 50 | C35 |
These properties help ASTM A193 B7 fasteners stay strong and hold their shape even when used in high stress high heat or corrosive conditions.
Key ASTM A193 Grade B7 Steel Properties
Unifit Fasteners is a trusted name in the industry, offering precision-engineered Nickel 200 Stud Bolts designed for demanding applications. We stand out for:
- High-Temperature Resistance: A193 GR B7 fasteners are built to take on extreme heat so they’re a solid choice for high pressure and high temperature work. Even when the heat hits 1100°F or 593°C they hold their strength and keep doing the job without failing.
- Corrosion Resistance: ASTM A193 B7 fasteners have a good amount of chromium and molybdenum which helps them resist oxidation of sulfur gases and tough chemicals. This makes them a durable option for use in corrosive environments where other materials might wear out faster.
- Tensile Strength: ASTM A193 Grade B7 bolts nuts and studs are built for strength. They offer solid tensile strength which makes them a reliable choice for heavy duty jobs where parts need to hold up under serious pressure.
ASTM A193 Grade B7 Fasteners Standards
ASTM A193 Grade B7 fasteners are made following strict industry standards to ensure quality and performance. Here’s a list of the standards:
| Hexagon Bolt / Set Screws | Stud Bolt | Hexagon Nuts | Socket Cap screws |
|---|---|---|---|
| DIN 931 | BS4882 | DIN 934 | DIN 912 |
| DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
| BS 1768 | BS 1769 | DIN 7984 | |
| UNI 5731 | BS 1083 | ANSI B18.3 | |
| UNI 5739 | BS 3692 | ISO 4762 | |
| ISO 4014 | ISO 4032 | UNI 5931 | |
| ISO 4017 | ISO 4033 | BS 2470 | |
| BS 1769 | ANSI B18.2.2 | BS 4168 | |
| BS 3692 | |||
| ANSI B18.2.1 |
| Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
|---|---|---|---|
| DIN 913 | DIN 963 | DIN 938 | DIN 125 |
| DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
Comparison of ASTM A193 Grade B7 Stud Bolts with Other Grades:
B7 vs. B16 Bolts
B7 bolts are a better pick when you need strength at high temperatures. B16 bolts on the other hand work well in lower temperature settings.
B7 vs. L7 Bolts
B7 bolts are built for hotter environments while L7 bolts are made to handle colder conditions more effectively.
B7 Bolts vs Grade 8 Bolts
Both B7 and Grade 8 bolts are strong fasteners but they’re used in different ways. ASTM A193 B7 bolts are made for pressure and temperature rated applications that follow ASME standards. Grade 8 bolts are more common in automotive or mechanical setups where the pressure and temperature demands aren’t as demanding.
Applications of ASTM A193 Grade B7 Fasteners
ASTM A193 Grade B7 fasteners are designed to give strong and reliable performance even in toughest conditions. You’ll find them used across a wide range of industries including:
- Heavy Engineering Industries
- Petro-Chemical Industries
- Ship Building Industries
- Fertilizer Plants
- Civil Construction Industries
- Power Generation Units (Nuclear, Hydro, or Thermal)
- Civil Industries
- Oil Expansion Projects
- Offshore & Onshore Oil Towers
- Valves
- Vessels
- Home Fittings
- Pumps
- Railways
- Steel Plants
ASTM A193 Grade B7 Price in India for Fasteners
At Unifit Metalloys Inc we offer ASTM A193 Grade B7 fasteners in India at competitive prices so you get top quality without going over budget. These fasteners are made for strength, durability and performance which makes them a great fit for critical uses in oil and gas petrochemical and power generation industries. Whether you need bulk orders or something more specific we have cost effective options to match your needs. You can count on Unifit Metalloys Inc to deliver reliable ASTM A193 Grade B7 fasteners along with expert support and timely delivery.
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