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Pengkumta Fasteners, a reputable manufacturer and supplier based in Bangkok, Thailand, specializes in top-notch Stainless Steel 304H Washers that are perfect for high-temperature and corrosive industrial settings. Known for their impressive strength, durability, and resistance to oxidation, these washers deliver dependable performance in tough environments like chemical plants, power generation facilities, and construction projects. With a commitment to strict quality control and advanced manufacturing techniques, Pengkumta Fasteners guarantees precision, long-lasting performance, and adherence to international standards. The company prides itself on timely delivery and customer satisfaction, making it a reliable source for Stainless Steel 304H Washers in both local and global markets.
Stainless Steel 304H Washers are made up of iron, 18–20% chromium, 8–12% nickel, and a higher carbon content compared to 304/304L, which boosts their tensile strength at elevated temperatures. These washers boast a tensile strength of about 515 MPa and a yield strength of around 205 MPa. They excel in toughness, oxidation resistance, and mechanical stability, even under high temperatures and corrosive conditions, ensuring they perform reliably and last long in critical industrial fastening applications.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304H | min. | 0.04 | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | – | 10.5 | – | |
| 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 | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
| Grade | Stainless Steel 304, 304H, 304L |
| Specifications | ASTM A193 / ASME SA193 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Star Washer, Flat Washer, Lock Washer, Slot Washer, Machine Washer, Sealing Washer, Split Washer, Dome Tooth Washer, Countersunk Washer, Tab Washers, Spherical Washer, Square Washer, Spring Washer, Round Washers, Square Washers |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
These Stainless Steel 304H Washers are widely utilized in industries that demand high-temperature resistance and corrosion protection. They’re commonly found in chemical and petrochemical plants for piping, reactors, and heat exchangers. Power generation facilities rely on them for boilers, turbines, and superheaters that face thermal stress. The marine and offshore sectors also benefit from their ability to resist seawater corrosion. Furthermore, they play a vital role in construction, food processing, and pharmaceutical industries, providing secure fastening, effective load distribution, and long-term performance in challenging environments, making them essential components for critical industrial applications.
Our complete testing program for stainless steel 304H washers includes hardness testing, chemical analysis by Spectro analysis, positive material identification (PMI) testing, levelling testing, micro-macro testing, pitting resistance testing, and intergranular corrosion testing. Our commercial invoices, packaging information, certificates of origin, certificates of authenticity, and other documents are required. To further ensure customer satisfaction, we offer third-party inspection certifications, which prove the quality and efficiency of our 304H washers in various applications and demands.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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