ASTM A354 Alloy Steel Bolts and Studs are quenched and tempered alloy steel fasteners designed for high-strength applications at normal atmospheric temperatures and limited elevated-temperature service. ASTM A354 covers Grade BC and Grade BD, with Grade BD providing the higher strength level. The specification includes bolts, studs, threaded rods and other externally threaded fasteners up to 4 inches in diameter.
What Are ASTM A354 Alloy Steel Bolts?
ASTM A354 Alloy Steel Bolts are high-strength fasteners manufactured from alloy steel and heat treated by quenching and tempering. The specification establishes chemical and mechanical requirements for bolts, studs, threaded rods and other externally threaded fasteners where high strength is required.
Unlike a specification limited to one particular bolt configuration, ASTM A354 can cover different externally threaded designs. This makes it useful for industrial applications where the required strength level is more important than a single standard head configuration.
The specification includes Grade BC and Grade BD. Grade BC represents the lower of the two strength levels, while Grade BD provides higher strength. Selection should be based on the design load, stresses and service conditions rather than grade name alone.
Table of Contents
- ➤ What Are ASTM A354 Alloy Steel Bolts?
- ➤ Types of ASTM A354 Alloy Steel Fasteners
- ➤ ASTM A354 Grade BC and Grade BD Bolts
- ➤ ASTM A354 Specifications Chart
- ➤ ASTM A354 Chemical Composition
- ➤ ASTM A354 Mechanical Properties Chart
- ➤ ASTM A354 Bolts Weight Chart
- ➤ ASTM A354 Equivalent Grades Chart
- ➤ Applications of ASTM A354 Alloy Steel Bolts and Studs
- ➤ Why Choose Our ASTM A354 Fasteners?
- ➤ ASTM A354 Alloy Steel Fasteners Manufacturer in India
- ➤ ASTM A354 Bolts Stockist in Mumbai
- ➤ Order ASTM A354 Alloy Steel Bolts and Studs
Types of ASTM A354 Alloy Steel Fasteners
We supply ASTM A354 fasteners in different configurations according to application and drawing requirements.
| Type | Description |
|---|---|
| ASTM A354 Heavy Hex Head Bolts | Heavy-duty headed bolts for high-strength bolted assemblies |
| ASTM A354 Stud Bolts | Fully or partially threaded studs for flanged and industrial connections |
| ASTM A354 Grade BC Bolts | High-strength alloy steel bolts for demanding applications |
| ASTM A354 Grade BD Bolts | Higher-strength alloy steel bolts for high-load applications |
| ASTM A354 BC Threaded Rods | Threaded rods used for anchoring and customized assemblies |
| ASTM A354 High Tensile Alloy Studs | High-strength studs for industrial equipment and connections |
| ASTM A354 Socket Head Cap Screws | Compact high-strength fasteners for machinery and equipment |
| Custom ASTM A354 Fasteners | Special sizes, lengths, threads and configurations as specified |
ASTM A354 specifically covers bolts, studs, threaded rod and other externally threaded fasteners, rather than restricting the specification to one particular configuration.
ASTM A354 Grade BC and Grade BD Bolts
ASTM A354 Grade BC Fasteners
ASTM A354 Grade BC Fasteners are the lower-strength level within the A354 specification. They provide high tensile and yield strength while allowing different fastener configurations.
They are used where a high-strength alloy steel fastener is required but the higher strength level of Grade BD is not necessary.
ASTM A354 Grade BD Bolts
ASTM A354 Grade BD Bolts provide the higher strength level under ASTM A354. They are suitable for applications involving higher tensile and yield requirements.
ASTM notes that for structural steel bolting above 1½ inches, Grade BD may be considered where tensile strength above 150 ksi is necessary, subject to consideration of applicable structural-bolting requirements.
ASTM A354 Specifications Chart
| Specification | ASTM A354 |
|---|---|
| Material | Quenched & Tempered Alloy Steel |
| Grades | BC, BD |
| Fastener Diameter | Up to 4 in. |
| Product Forms | Bolts, studs, threaded rods, screws and externally threaded fasteners |
| Manufacturing | Forged / machined as applicable |
| Heat Treatment | Quenched and tempered |
| Thread | UNC / UNF / other specified threads |
| Head Style | Heavy hex and other applicable configurations |
| Finish | Plain, zinc-coated, galvanized or specified finish |
| Application | High-strength industrial fastening |
| Standard | ASTM A354/A354M |
ASTM A354 is primarily intended for applications at normal atmospheric temperatures, with limited elevated-temperature application; ASTM directs users toward ASTM A193/A193M for bolting intended for elevated-temperature service.
ASTM A354 Chemical Composition
| Element | Up to 2¼ in. | Over 2¼ to 4 in. |
|---|---|---|
| Carbon (C) | 0.30–0.53% | 0.35–0.53% |
| Manganese (Mn) | 0.60% min | 0.60% min |
| Phosphorus (P) | 0.035% max | 0.035% max |
| Sulfur (S) | 0.040% max | 0.040% max |
| Boron (B) | 0.003% max | 0.003% max |
| Chromium (Cr) | As required by alloy selection | 0.40% min* |
| Nickel (Ni) | As required by alloy selection | 0.40% min* |
| Molybdenum (Mo) | As required by alloy selection | 0.15% min* |
ASTM A354 Mechanical Properties Chart
The mechanical requirements differ according to grade and fastener diameter.
| Grade | Diameter | Tensile Strength, min. | Yield Strength, min. | Elongation, min. | Reduction of Area, min. |
|---|---|---|---|---|---|
| BC | ¼–2½ in. | 125 ksi | 109 ksi | 16% | 50% |
| BC | 2⅝–4 in. | 115 ksi | 99 ksi | 16% | 45% |
| BD | ¼–2½ in. | 150 ksi | 130 ksi | 14% | 40% |
| BD | 2⅝–4 in. | 140 ksi | 115 ksi | 14% | 40% |
ASTM A354 Bolts Weight Chart
| Nominal Diameter | Approx. Weight / 100 Pieces at 1 in. Length |
|---|---|
| ¼ in. | 0.55 kg |
| ⅛ in. | 1.25 kg |
| ½ in. | 2.20 kg |
| ⅝ in. | 3.45 kg |
| ¾ in. | 5.00 kg |
| ⅞ in. | 6.80 kg |
| 1 in. | 8.90 kg |
| 1⅛ in. | 11.30 kg |
| 1¼ in. | 14.00 kg |
| 1⅜ in. | 17.00 kg |
| 1½ in. | 20.50 kg |
| 1¾ in. | 28.00 kg |
| 2 in. | 36.00 kg |
ASTM A354 Equivalent Grades Chart
| ASTM A354 Grade | Common Comparative Reference | Comparison |
|---|---|---|
| A354 Grade BC | ASTM F3125 Grade A325 | Similar high-strength range in certain applications; not a direct interchange |
| A354 Grade BD | ASTM F3125 Grade A490 | Comparable high-strength range; not automatically interchangeable |
| A354 Grade BD | SAE Grade 8 | Similar high-strength fastener category; specifications differ |
| A354 Grade BC | High-strength alloy steel bolting | Application-dependent comparison |
| A354 Grade BD | High-strength alloy steel bolting | Application-dependent comparison |
Applications of ASTM A354 Alloy Steel Bolts and Studs
ASTM A354 fasteners are used where high-strength bolting is required. Typical applications include:
- Heavy machinery
- Industrial equipment
- Structural assemblies
- Pressure-related equipment
- Oil and gas equipment
- Petrochemical plants
- Power generation
- Pumps and valves
- Flanged connections
- Fabrication equipment
- Heavy engineering projects
- High-load mechanical assemblies
The appropriate A354 grade should be selected according to the actual design load, service temperature, installation method and project specification.
Why Choose Our ASTM A354 Fasteners?
- Grade-Specific Supply: We supply ASTM A354 Grade BC Fasteners and ASTM A354 Grade BD Bolts according to project requirements.
- Multiple Configurations: Our range includes heavy hex bolts, stud bolts, threaded rods and other externally threaded fasteners.
- Quality Documentation: Material test certificates, dimensional inspection and other documentation can be provided according to project requirements.
- Industrial Supply Experience: We understand that industrial buyers require more than a fastener size. Grade, dimensions, threads, finish, quantity and documentation can all affect suitability.
- India and Export Supply: We support requirements from Indian manufacturers, engineering companies, fabricators and overseas industrial buyers.
ASTM A354 Alloy Steel Fasteners Manufacturer in India
As an ASTM A354 Alloy Steel Fasteners Manufacturer in India, we supply high-strength alloy steel bolts, studs and threaded fasteners for industrial applications.
We can supply material according to required grade, diameter, length, thread configuration, finish and documentation requirements. Buyers can share drawings or technical specifications when a standard product configuration is not sufficient.
ASTM A354 Bolts Stockist in Mumbai
We are an ASTM A354 Bolts Stockist in Mumbai, supplying Grade BC and Grade BD fasteners for industrial and engineering requirements.
For an accurate quotation, provide the required ASTM A354 grade, fastener type, diameter, length, thread, finish and quantity. This allows us to determine the appropriate product and supply condition.
Order ASTM A354 Alloy Steel Bolts and Studs
Looking for ASTM A354 Alloy Steel Bolts, ASTM A354 Stud Bolts, ASTM A354 Grade BC Fasteners or ASTM A354 Grade BD Bolts?
We supply high-strength alloy steel fasteners in different configurations for industrial and engineering applications. Contact us with your specification and quantity to discuss availability, documentation and pricing.
Get a quotation for ASTM A354 Alloy Steel Bolts and Studs today.
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