Chanchai Stainless is a top steel manufacturer and supplier of stainless steel products in Bangkok, Thailand, with a diversified portfolio of industrial parts such as Stainless Steel 348 Fasteners. Renowned for its accuracy engineering, conformity to international standards, and customer-centric approach, Chanchai Stainless delivers fasteners that satisfy the stringent requirements of industries. With sophisticated manufacturing and rigorous quality control, the company guarantees each product provides consistent performance under high temperatures and corrosive conditions. Chanchai Stainless is a reliable business partner in the stainless steel industry in Thailand and worldwide.
Stainless Steel 348 Fasteners contain 17–20% chromium, 9–13% nickel, and columbium (niobium), which stabilizes the alloy and enhances resistance to intergranular corrosion. Comparable in structure to 347, this austenitic stainless steel provides improved high-temperature strength and oxidation resistance. The mechanical properties are a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of up to 35%. The fasteners are not weakened and do not lose toughness at high temperature conditions, so they are well suited for the service under thermal stress and cyclic heating conditions.
| Element | Content (%) |
|---|---|
| Iron, Fe | 66 |
| Chromium, Cr | 18 |
| Nickel, Ni | 10 |
| Manganese, Mn | 2.0 |
| Silicon, Si | 1.0 |
| Nb + Ta | 0.8 |
| Cobalt, Co | 0.2 |
| Tantalum, Ta | 0.1 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength (@ strain 0.200%) | 275 MPa | 39900 psi |
| Izod impact | 120 – 160 J | 88.5 – 118 ft-lb |
| Charpy impact | 160 J | 118 ft-lb |
| Shear modulus (typical for steel) | 77.0 GPa | 11200 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 45% | 45% |
| Hardness, Brinell (converted from Rockwell B hardness) | 147 | 147 |
| Hardness, Knoop (converted from Rockwell B hardness) | 164 | 164 |
| Hardness, Rockwell B | 85 | 85 |
| Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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Stainless Steel 348 Nuts offer exceptional corrosion resistance, particularly in harsh environments. They are available in various sizes, typically from M3 to M30, with standard dimensions conforming to ISO or ANSI specifications, ensuring secure fastening in industrial applications.
Stainless Steel 348 Stud Bolts provide superior corrosion resistance and are ideal for high-temperature applications. They usually come in sizes from M6 to M36 and lengths from 50 mm to 300 mm, meeting industrial standards for strength and durability.
Stainless Steel 348 Bolts are known for their high corrosion resistance and high-temperature performance. They are available in sizes from M6 to M30 and can be found in various lengths, complying with ANSI or ISO standards, and are suitable for heavy-duty applications.
Stainless Steel 348 Threaded Rods offer excellent resistance to oxidation and corrosion. They are commonly available in diameters from M6 to M30 and lengths ranging from 100 mm to 1000 mm. They are used in applications requiring continuous threading and high strength.
Stainless Steel 348 Screws provide robust corrosion resistance, particularly in aggressive environments. Available in sizes from M3 to M20 and lengths from 10 mm to 100 mm, they are used for precise and secure fastening in various mechanical assemblies.
Stainless Steel 348 Washers offer superior corrosion resistance and are used to distribute the load of a screw or bolt. They come in sizes from M4 to M36 and various thicknesses, adhering to standard dimensions for reliable performance in harsh conditions.
We provide essential documents such as commercial invoices, packaging lists, certificates of origin, and guarantee letters to ensure smooth transactions. Additionally our Third Party Inspection Certificate guarantees the quality and compliance of our products, ensuring complete client satisfaction. These documents are vital for transparency, traceability and assurance of the product’s quality and origin offering our clients peace of mind and confidence in their purchases.
Stainless Steel 348 Fasteners find extensive applications in chemically aggressive as well as high-temperature settings. They are best suited for use in heat exchanger, pressure vessel, boiler, reactor, and piping systems where thermal fatigue as well as oxidation resistance are necessary. Petrochemical, aerospace, power generation, and chemical processing industries make use of these fasteners due to their capability to remain mechanically stable even at extremely high temperatures. Their immunity to intergranular corrosion following welding renders them appropriate for application in systems operating under continuous or recurring heating, where there will be long-term reliability and performance during hard industry conditions.
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