ASTM A453 Grade 660 GR660 A286 Stainless Steel High Temperature Bolt
Short Description:
ASTM A453 Grade 660 GR660 A286 Stainless Steel Bolt is a high temperature fastener designed for applications requiring high strength, corrosion resistance and stable mechanical performance under elevated temperatures. Custom sizes, threads and inspection documents are available.
GR660 A286 Stainless Steel Bolt Overview
ASTM A453 Grade 660 GR660 A286 Stainless Steel Bolt is a high temperature fastener manufactured from precipitation hardening alloy A286 (UNS S66286). It is designed for applications requiring high strength, oxidation resistance and stable mechanical performance under elevated temperature conditions.
SAKY STEEL supplies GR660 alloy bolts with customized dimensions, thread specifications, heat treatment conditions and inspection documentation. These fasteners are suitable for demanding industrial applications where conventional stainless steel bolts may not provide sufficient high temperature strength.
Material Selection Note
GR660 A286 alloy bolts are selected according to operating temperature, mechanical load, corrosion environment and fastening requirements. Actual performance depends on service conditions, heat treatment condition and applicable specification.
Product Specifications
| Item | Specification |
|---|---|
| Material | GR660 / A286 Alloy / UNS S66286 |
| Standard | ASTM A453 Grade 660 |
| Product Type | High Temperature Alloy Bolt |
| Thread | Metric / Inch Thread Customized |
| Diameter | Customized According to Requirement |
| Length | Customized According to Drawing |
| Heat Treatment | Solution Treated and Age Hardened |
| Surface | Bright / Passivated |
| Certificate | MTC / EN 10204 3.1 Available |
Key Features of GR660 A286 Alloy Bolt
- High strength precipitation hardening alloy for demanding fastening applications.
- Maintains mechanical performance under elevated temperature conditions.
- Good oxidation resistance for high temperature environments.
- Excellent dimensional stability after heat treatment.
- Suitable for customized industrial fastener requirements.
Chemical Composition of GR660 A286 Alloy
A286 alloy is an iron-nickel-chromium precipitation hardening alloy with additions of titanium, aluminum and other elements to achieve high temperature strength.
| Element | Typical Content |
|---|---|
| Nickel (Ni) | 24-27% |
| Chromium (Cr) | 13.5-16% |
| Molybdenum (Mo) | 1.0-1.5% |
| Titanium (Ti) | 1.75-2.35% |
| Aluminum (Al) | 0.35-0.75% |
| Iron (Fe) | Balance |
Actual chemical composition shall be confirmed by the applicable specification and material certificate.
Mechanical Properties of GR660 A286 Alloy Bolt
GR660 A286 alloy bolts obtain high mechanical performance through controlled heat treatment and aging processes. Actual properties depend on fastener size, heat treatment condition and applicable specification requirements.
| Condition | Tensile Strength | Yield Strength | Hardness |
|---|---|---|---|
| Age Hardened | High Strength Condition | High Yield Strength | According to Specification |
For critical fastening applications, mechanical properties shall be confirmed according to ASTM A453 Grade 660 requirements and inspection documentation.
Test Report
GR660 A286 Bolt vs Other Fastener Grades Comparison
Different fastener materials provide different combinations of strength, corrosion resistance and temperature capability. Material selection should be based on operating temperature, load requirements and environment.
| Grade | Main Feature | Relative Cost | Typical Application |
|---|---|---|---|
| 304 Stainless Steel Bolt | Good general corrosion resistance and fabrication performance | Lower | General industrial fastening |
| 316 Stainless Steel Bolt | Improved chloride corrosion resistance | Medium | Marine and chemical environments |
| GR660 A286 Bolt | High temperature strength and precipitation hardening capability | Higher | High temperature equipment and critical fasteners |
Manufacturing Process
SAKY STEEL manufactures GR660 A286 alloy bolts through controlled forming, machining, heat treatment and inspection processes to achieve reliable mechanical performance and dimensional accuracy.
Typical manufacturing process:
A286 Alloy Material → Cutting → Forging / Machining → Thread Processing → Heat Treatment → Surface Treatment → Inspection → Packaging
- Precision machining ensures accurate bolt dimensions and thread quality.
- Heat treatment improves strength and high temperature performance.
- Surface treatment improves corrosion resistance and appearance.
- Final inspection confirms dimensional and quality requirements.
Inspection and Quality Control
SAKY STEEL provides inspection support for GR660 A286 bolts to verify material quality, dimensions, threads and mechanical performance.
| Inspection Item | Purpose |
|---|---|
| Chemical Analysis | Confirm A286 alloy composition. |
| Dimensional Inspection | Check bolt dimensions and tolerances. |
| Thread Inspection | Verify thread accuracy. |
| Hardness Testing | Verify heat treatment condition. |
| MTC / Inspection Report | Provide material traceability documentation. |
Applications of GR660 A286 Alloy Bolt
GR660 A286 alloy bolts are designed for high temperature fastening applications requiring high strength, dimensional stability and reliable performance under elevated temperature conditions.
- Gas turbine components and power generation equipment.
- High temperature industrial machinery.
- Furnace and heat treatment equipment.
- Chemical processing equipment requiring heat resistant fasteners.
- Aerospace and engine related fastening applications.
- Critical industrial assemblies requiring high strength fasteners.
Packaging
SAKY STEEL uses suitable export packaging methods to protect GR660 A286 alloy bolts during transportation and storage while maintaining product identification and traceability.
- Protective packaging to prevent surface damage.
- Wooden cases or export cartons according to shipment requirements.
- Labels including grade, size, batch and material information.
- Customized packaging according to customer requirements.
Why Choose SAKY STEEL?
Special Alloy Fastener Supply
SAKY STEEL supplies GR660 A286 alloy bolts for applications requiring high strength and elevated temperature performance.
Customized Fastener Solutions
Bolt dimensions, thread specifications, length and surface requirements can be customized according to customer drawings and standards.
Material Traceability
Material certificates and inspection documents are available to support product verification.
Quality Inspection Support
Chemical analysis, dimensional inspection, thread inspection and mechanical testing can be arranged according to requirements.
Export Service
Professional packaging and international shipment support are provided for global industrial customers.
FAQ
What is GR660 A286 alloy bolt?
GR660 A286 alloy bolt is a high temperature fastener made from precipitation hardening A286 alloy (UNS S66286), designed for applications requiring high strength and temperature resistance.
What standard applies to GR660 bolts?
GR660 bolts are commonly supplied according to ASTM A453 Grade 660 requirements. Final specifications depend on product dimensions and customer requirements.
What is the difference between GR660 and 316 stainless steel bolts?
316 stainless steel bolts provide good corrosion resistance, while GR660 A286 bolts are designed for higher strength and elevated temperature applications.
Can customized GR660 bolt sizes be supplied?
Yes. SAKY STEEL can supply customized bolt dimensions, thread types, lengths and specifications according to customer requirements.
Can MTC and inspection reports be provided?
Yes. Material certificates, inspection reports and quality documents can be provided according to customer requirements.
What information is required for quotation?
Please provide material grade, bolt size, thread specification, length, quantity, application requirements and inspection requirements.
