SS 446 Bolts – Global Supplier & Exporter
Aurum Overseas is a trusted Stainless Steel 446 Bolts Supplier & Exporter, providing premium-quality fastening solutions to industrial buyers across the USA, UAE, Saudi Arabia, and major European markets. Manufactured from high-chromium ferritic stainless steel, SS 446 Bolts are specifically designed for elevated temperature applications requiring exceptional oxidation and scaling resistance.
Known for their ability to withstand prolonged exposure to extreme temperatures, UNS S44600 Bolts are widely used in furnace equipment, heat treatment systems, thermal processing units, and combustion applications. Their superior resistance to oxidation at temperatures exceeding those tolerated by conventional stainless steel grades makes them a preferred choice for demanding thermal environments.
Aurum Overseas supplies ASTM A193 Grade 446 Bolts with complete material traceability, inspection reports, and export-standard packaging to support international procurement requirements. We work closely with EPC contractors, industrial distributors, maintenance teams, and OEM manufacturers seeking certified fastening solutions capable of delivering reliable performance in high-temperature service.
Backed by technical expertise, stringent quality controls, and efficient global logistics, we have established ourselves as a dependable supplier of 446 Stainless Steel Bolts for critical industrial applications where heat resistance, durability, and product consistency are essential.
UNS S44600 Bolts – Product Overview
Stainless Steel 446 Bolts are manufactured from a ferritic stainless steel containing approximately 23–27% chromium. This high chromium content provides outstanding resistance to oxidation and scaling under cyclic heating conditions, making SS 446 one of the most heat-resistant stainless steel grades available for fastening applications.
Unlike austenitic grades, UNS S44600 Bolts offer excellent resistance to sulfur-bearing atmospheres and high-temperature oxidation. These characteristics make them suitable for thermal processing environments where prolonged exposure to elevated temperatures can compromise the integrity of standard fastening materials.
Available in both standard and customized configurations, SS 446 Bolts are extensively utilized in industrial furnaces, annealing equipment, burners, kiln assemblies, heat exchangers, petrochemical processing systems, and power generation facilities where reliable fastening performance under thermal stress is critical.
Specifications of Stainless Steel 446 Bolts
| Specification | Details |
|---|---|
| UNS Number | UNS S44600 |
| ASTM Standards | ASTM A193, ASTM F593, ASTM F594, ASTM F1554 |
| ASME Standards | ASME SA193, ASME SF593, SF594, F1554 |
| International Standards | IS, ASTM, BS and all International Standards |
| Bolt Size | M3 – M56 | 3/16" – 2" |
| Available Length | 3 mm – 200 mm |
| Machine Screw Size | M1.6 – M12 |
| Thread Types | UNC, UNF, Metric, BSW, BSF |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Forms | Bolts, Screws and Custom Fasteners |
| Certification | EN 10204 3.1 / MTC |
| Packaging | Export Standard Packaging |
Mechanical Properties of Stainless Steel 446 Bolts
| Property | Value |
|---|---|
| Tensile Strength | 485 MPa Min |
| Yield Strength | 275 MPa Min |
| Elongation | 20% Min |
| Hardness | 89 HRB Max |
| Density | 7.50 g/cm³ |
| Melting Range | 1425 – 1530°C |
Chemical Composition of SS 446 Bolts
| Element | Composition (%) |
|---|---|
| Carbon | 0.20 Max |
| Chromium | 23.0 – 27.0 |
| Manganese | 1.50 Max |
| Silicon | 1.00 Max |
| Phosphorus | 0.040 Max |
| Sulfur | 0.030 Max |
| Iron | Balance |
Equivalent Grades of UNS S44600 Bolts
| Standard | Equivalent Grade |
|---|---|
| UNS | S44600 |
| ASTM | ASTM A193 Grade 446 |
| ASME | ASME SA193 Grade 446 |
| EN | 1.4762 |
| DIN | X18CrN28 |
| JIS | SUS446 |
| Common Name | Stainless Steel 446 |
Types of Stainless Steel 446 Bolts Available for High-Temperature Applications
Industrial furnace systems and thermal processing equipment often require specialized fastening configurations designed to withstand elevated operating temperatures. Aurum Overseas manufactures a comprehensive range of SS 446 Bolts to suit various installation and engineering requirements.
Bolt Type
| Bolt Type | Typical Applications |
|---|---|
| Hex Head Bolts | Furnace casings, heat exchangers, structural assemblies |
| Square Bolts | Thermal equipment maintenance applications |
| U Bolts | Pipe supports exposed to elevated temperatures |
| Eye Bolts | Handling and lifting systems |
| T Bolts | Equipment mounting assemblies |
| Hex Bolts | General industrial fastening |
| Lag Bolts | Heavy-duty anchoring systems |
| Countersunk Bolts | Flush-fit thermal equipment assemblies |
| J Bolts | Foundation and embedded installations |
| Allen Bolts | Precision high-temperature equipment |
| Shoulder Bolts | Moving and rotating thermal assemblies |
Available Thread Types
| Thread Type | Availability |
|---|---|
| UNC Threads | Available |
| UNF Threads | Available |
| Metric Threads | Available |
| BSW Threads | Available |
| BSF Threads | Available |
| Custom Thread Configurations | Available |
Aurum Overseas also manufactures 446 Stainless Steel Bolts in custom diameters, thread profiles, and lengths according to customer drawings and project specifications. These tailored fastening solutions help engineers address the unique challenges associated with high-temperature industrial operations.
UNS S44600 Bolts Suppliers in Europe for Furnace & Thermal Processing Applications
European industries involved in thermal processing, heat treatment, and industrial manufacturing often require fastening materials capable of maintaining performance under prolonged exposure to elevated temperatures. UNS S44600 Bolts are widely specified in applications where oxidation resistance and thermal stability are more critical than conventional corrosion resistance.
Aurum Overseas supplies Stainless Steel 446 Bolts to customers across Germany, France, Italy, Spain, the Netherlands, Belgium, and the United Kingdom. These bolting solutions are used in industrial furnaces, annealing lines, kilns, heat exchangers, and combustion equipment where high-temperature reliability is essential. Our export services include material traceability, inspection documentation, and export-standard packaging to support international procurement requirements.
Stainless Steel 446 Bolts Exporters in USA for Heat Treatment & Power Generation Industries
Industrial sectors throughout the USA continue to invest in equipment operating under demanding thermal conditions. The excellent oxidation resistance of SS 446 Bolts makes them suitable for fastening applications exposed to repeated heating cycles and elevated operating temperatures.
Aurum Overseas exports ASTM A193 Grade 446 Bolts to customers throughout the USA, supporting power generation facilities, furnace manufacturers, heat treatment plants, petrochemical operations, and OEM equipment producers. Each shipment is supplied with complete quality documentation to ensure compliance with project specifications and industrial standards.
SS 446 Bolts Suppliers in Gulf Countries for Petrochemical & Thermal Applications
The Gulf region operates numerous energy and industrial facilities where elevated temperatures are an integral part of production processes. Fastening solutions used in these environments must provide consistent performance under continuous thermal exposure.
Aurum Overseas supplies 446 Stainless Steel Bolts to the UAE, Saudi Arabia, Qatar, Oman, Kuwait, and Bahrain for petrochemical plants, refinery heating systems, thermal processing units, and industrial infrastructure projects. Our expertise in international logistics enables timely delivery of certified bolting solutions backed by technical support and quality assurance.
Why Industrial Buyers Choose Aurum Overseas for SS 446 Bolts
Aurum Overseas supports industrial buyers worldwide with premium-quality SS 446 Bolts engineered for elevated temperature applications requiring exceptional oxidation resistance and dependable performance. Our expertise in heat-resistant stainless steel fastening solutions enables us to supply products suitable for demanding thermal environments.
With extensive export experience, inspection capabilities, and strong quality assurance practices, we deliver certified UNS S44600 Bolts to EPC contractors, OEM manufacturers, industrial distributors, and maintenance teams seeking reliable high-temperature bolting solutions supported by efficient global logistics.
Industries Using UNS S44600 Bolting Solutions
The outstanding oxidation resistance of Stainless Steel 446 Bolts makes them suitable for industries operating under continuous or cyclic high-temperature conditions.
| Industry | Typical Applications |
|---|---|
| Heat Treatment | Annealing furnaces and thermal processing systems |
| Power Generation | Boilers, combustion units, and auxiliary systems |
| Petrochemical | High-temperature processing equipment |
| Furnace Manufacturing | Industrial furnace assemblies and components |
| Steel Processing | Reheating and heat treatment equipment |
| Glass Industry | Kilns and thermal production systems |
| Cement Industry | High-temperature plant equipment |
| Industrial Manufacturing | Thermal machinery and specialized equipment |
SS 446 Bolts Comparison for High-Temperature Applications
Material selection for elevated temperature service depends on oxidation resistance, thermal stability, and operating conditions. The following comparison highlights the characteristics that make SS 446 Bolts suitable for extreme heat applications.
| Property | SS 446 Bolts |
|---|---|
| UNS Number | UNS S44600 |
| Stainless Steel Family | Ferritic |
| Primary Advantage | Exceptional oxidation resistance |
| Chromium Content | Very High |
| Heat Resistance | Excellent |
| Scaling Resistance | Outstanding |
| Corrosion Resistance | Moderate |
| Weldability | Limited |
| Typical Applications | Furnaces, kilns, heat treatment equipment |
| Service Environment | Elevated temperature operations |
While SS 446 Bolts are preferred for applications involving extreme temperatures and oxidation resistance, industrial buyers often evaluate SS 410 Bolts for applications requiring higher mechanical strength and wear resistance. For aggressive chemical environments demanding enhanced pitting and crevice corrosion resistance, SS 317L Bolts may also be considered depending on the operating conditions and service requirements.
Frequently Asked Questions
1. What are Stainless Steel 446 Bolts used for?
SS 446 Bolts are primarily used in industrial furnaces, heat treatment equipment, combustion systems,
kilns, and thermal processing applications where resistance to oxidation and scaling at elevated
temperatures is essential.
2. What is UNS S44600?
UNS S44600 is the material designation for Stainless Steel 446, a high-chromium ferritic stainless steel
developed for superior oxidation resistance and excellent performance in high-temperature environments.
3. Why are SS 446 Bolts preferred for furnace applications?
The high chromium content of UNS S44600 Bolts provides exceptional resistance to oxidation and scaling
during continuous or cyclic heating, making them suitable for demanding furnace environments.
4. What thread types are available in Stainless Steel 446 Bolts?
We manufacture SS 446 Bolts with UNC, UNF, Metric, BSW, and BSF thread profiles. Custom thread
configurations can also be produced according to customer specifications and engineering drawings.
5. Can SS 446 Bolts be supplied in custom sizes?
Yes. Aurum Overseas offers customized diameters, lengths, and bolt configurations to meet the specific
requirements of furnace manufacturers, EPC contractors, and industrial maintenance projects.
6. Can you export Stainless Steel 446 Bolts to Germany and other European countries?
Yes. We regularly supply UNS S44600 Bolts to Germany, France, Italy, Spain, the Netherlands, Belgium,
and the United Kingdom for thermal processing equipment, steel manufacturing plants, and industrial
furnace systems.
Request a Quote for SS 446 Bolts
Looking for a reliable supplier of Stainless Steel 446 Bolts for high-temperature industrial applications? Aurum Overseas offers certified UNS S44600 Bolts manufactured to international standards and customized to your project specifications.
Contact our team today to request pricing, technical guidance, product specifications, or a tailored quotation for ASTM A193 Grade 446 Bolts. We support industrial projects worldwide with competitive pricing, dependable quality, complete documentation, and efficient global delivery.
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