Chanchai Stainless is a well-established Bangkok-based manufacturer and supplier of long-lasting and heat-resistant **stainless steel 446 nuts** for industrial use and high-temperature applications. Chanchai focuses on the quality and performance of 446 nuts that are capable of international standards in strength, resistance to corrosion, and oxidation resistance. Stainless steel 446 is a ferritic alloy that is formulated to withstand extreme heat and chemically aggressive environments. Chanchai offers these nuts in different sizes and thread types, serving industries in Thailand and international markets that demand dependable fastening solutions in hot environment conditions.
These nuts are mainly made up of 23–27% chromium, low carbon, and minute quantities of silicon and molybdenum. Due to this high content of chromium, 446 has superior resistance against oxidation, sulfidation, and scaling at temperatures up to 1100°C. These nuts have moderate mechanical strength with tensile strength of 485–620 MPa. Though less ductile than austenitic grades, 446 retains its structural integrity under thermal stress and provides superior resistance to thermal fatigue and corrosive gases. They cannot be hardened through heat treatment but preserve good dimensional stability at elevated temperatures.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 446 | min. | – | – | – | – | – | 23.0 | – | – | 0.10 |
| max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | – | 0.50 | 0.25 | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 446 | 485 | 275 | 20 | 92 | 201 |
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A corrosion-resistant product, Stainless Steel 446 nuts are available in sizes from M6 to M64. They offer excellent high-temperature oxidation resistance, making them suitable for industrial applications like furnace components and exhaust systems.
A corrosion-resistant product, Stainless Steel 446 coupling nuts, available in sizes from M6 to M36, connect two male threads securely. Their high chromium content ensures durability in high-temperature and corrosive environments.
A corrosion-resistant product, Stainless Steel 446 nylon insert nuts, or lock nuts, come in sizes from M3 to M36. The nylon insert prevents loosening under vibration, while the alloy’s resistance to scaling suits high-temperature applications.
A corrosion-resistant product, Stainless Steel 446 flange hex nuts feature an integrated flange and are available in sizes from M5 to M20. They provide even load distribution and stability in high-temperature environments.
A corrosion-resistant product, Stainless Steel 446 heavy hex nuts are available in sizes from M10 to M48. Their increased thickness and chromium content make them ideal for heavy-duty applications in extreme temperatures.
A corrosion-resistant product, Stainless Steel 446 square nuts come in sizes from M6 to M30. They offer a larger contact surface for secure fastening and stability in high-temperature and harsh industrial conditions.
Chanchai Stainless offers high quality Stainless Steel 446 Nuts that have consistently passed a whole array of tests that include hardness testing, spectro analysis, PMI, and flaring tests. Micro and macro tests, pitting resistance, and IGC tests are carried out to ensure every material sold by us meets high standards of quality. In addition, the full documentary coverage, complete with commercial invoice and packaging lists stating net/gross weights of box numbers along with labels and the legalized/attested certificate of origin provided, along with Third-Party Inspection Certificates, gives one absolute assurance as regards our quest to provide excellence and unparalleled customers satisfaction.
Stainless steel 446 nuts find extensive usage in applications requiring fastening with high security under harsh heat and corrosive environments. They are utilized in power generation and thermal processing in boilers, heat exchangers, furnace parts, and exhaust systems. In reactors and piping systems exposed to hot gases and sulfur-containing compounds, they find application in the chemical and petrochemical industries. They also suit kilns, incinerators, and equipment in cement and glass production. Their oxidation and heat resistance makes 446 nuts critical to the provision of joint safety and stability in high-temperature operations.
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