ASTM (formerly known as the American Society for Testing and Materials) is an internationally recognized organization responsible for developing material-based standards that define the chemical, mechanical, and testing requirements of industrial products.
ASTM fasteners are produced in accordance with defined ASTM standards and ASTM specifications, which govern chemical composition, mechanical properties, heat treatment, and testing criteria. Each ASTM fastener grade is engineered to perform under specific service conditions such as high temperature, pressure, corrosion exposure, or structural loading.
Unlike dimensional standards, ASTM standards focus on material performance and reliability, ensuring fasteners meet strength, durability, and safety requirements. ASTM specifications are widely used together with ASME, DIN, ISO, and other dimensional standards within the broader fastener standards framework to ensure complete material and dimensional compliance in critical industrial applications.
ASTM Fastener Standards
ASTM fastener standards cover a wide range of bolts, nuts, studs, and threaded fasteners, defining material grades for carbon steel, alloy steel, stainless steel, and special alloys.
| ASTM Standard | Fastener Type | Description / Application |
|---|---|---|
| ASTM A193 | Bolts & Stud Bolts | Alloy steel and stainless steel bolts designed for high-temperature and high-pressure service. |
| ASTM A194 | Nuts | Carbon steel and alloy steel nuts intended for use with ASTM A193 bolting in pressure applications. |
| ASTM A325 | Structural Bolts | High-strength structural bolts used in steel structures and construction assemblies. |
| ASTM A307 | Bolts & Studs | Carbon steel bolts and studs for general-purpose and low-strength applications. |
| ASTM A320 | Bolts & Stud Bolts | Low-temperature service bolting materials suitable for cryogenic and sub-zero environments. |
| ASTM F593 / F594 | Bolts & Nuts | Stainless steel bolts (F593) and nuts (F594) offering corrosion resistance in aggressive environments. |
These ASTM standards are extensively used across oil & gas, power generation, petrochemical, refinery, and construction industries, ensuring material reliability and performance under demanding service conditions.
ASTM vs ASME Standards
While often mentioned together, ASTM and ASME serve different purposes in fastener engineering.
- ASTM specifications define material properties such as tensile strength, yield strength, hardness, and chemical composition.
- ASME standards define dimensions, tolerances, thread forms, and geometry.
In practical applications, fasteners are commonly manufactured to ASTM material grades while conforming to ASME dimensional standards.
Applications of ASTM Fasteners
ASTM fasteners are used in applications requiring certified material performance, including:
- Pressure vessels and piping systems
- Oil & gas and petrochemical plants
- Power plants and heat exchangers
- Structural and construction projects
- Valves, flanges, and critical assemblies
ASTM Fasteners Supplied by Jade Alloys
At Jade Alloys, we manufacture and supply ASTM fasteners in full compliance with applicable ASTM standards and specifications.
Our Capabilities Include:
- ASTM-certified bolts, nuts, and stud bolts
- Wide range of ASTM grades including A193, A194, A325, A320, and F-series
- Full Material Test Certificates (MTC)
- Third-party inspection on request
- Custom sizes and project-based supply
