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At Poang Fasteners, we are a premier manufacturer and supplier of Stainless Steel 321/321H washers in Da Nang, Vietnam. Our washers are designed to withstand high temperatures and provide excellent corrosion resistance, making them ideal for aerospace, automotive, and chemical processing industries. Engineered for durability and reliable performance, our Stainless Steel 321/321H washers meet stringent quality standards. Trust us for precision-engineered washers that ensure long-lasting performance in demanding industrial applications.
Poang Fasteners, a prominent manufacturer and exporter from Da Nang, Vietnam, is well known for providing superior fastening solutions to industries across the globe. Of its high-end offerings, Stainless Steel 321/321H Washers are particularly sought after due to their high strength and capacity to withstand harsh conditions. Titanium stabilized, these washers have greater resistance against high-temperature oxidation, intergranular corrosion, and acidic environments. Fabricated under stringent quality conditions, Poang Fasteners guarantees reliability, consistency, and prolonged service life. Washers are extensively utilized in aerospace, petrochemical, automotive, and chemical processing sectors where stability and strength at elevated temperatures are indispensable.
| 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 | Wedge Lock Washers, Square Washer, Spring Lock Washer, Self Locking Washer, Sealing Washer, Plain Flat Washer, Ogee Washer, Industrial Washer, Hex Washer, Finishing Washer, Fender Washer, Conical Washer, Countersunk Washer, Square Beveled Washer, Curved Wave Washer, External Tooth Lock Washer, Internal Tooth Lock Washers, Internal Tab Washers, lock washer Fastener, Wedge Lock Washers, Tab Washer, Structural Washers. |
| Grade | AISI | Stainless Steel Bolts Chemical Composition (% maxima unless stated) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | ||||||
| A1 | SS 202 | 0.12 | 1.0 | 6.5 | 0.20 | 0.15-0.35 | 16,0 – 19,0 | 0.7 | 5,0 – 10,0 | 1.75-2.25 | ||||
| A2 | SS 304 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 15,0 – 20,0 | 0.0 | 8,0 – 19,0 | 4.0 | ||||
| A3 | SS 321 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 17,0 – 19,0 | 0.0 | 9,0 – 12,0 | 1.0 | ||||
| A4 | SS 316 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 16,0 – 18,5 | 2,0 – 3,0 | 10,0 – 15,0 | 4.0 | ||||
| C1 | SS 410 | 0.09-0.15 | 1.0 | 1.0 | 0.05 | 0.03 | 11,5 – 14,0 | – | 1 | – | ||||
| C3 | SS 431 | 0.17-0.25 | 1.0 | 1.0 | 0.04 | 0.03 | 16,0 – 18,0 | – | 1,5 – 2,5 | – | ||||
| C4 | SS 416 | 0.08-0.15 | 1.0 | 1.5 | 0.06 | 0.15-0.35 | 12,0 – 14,0 | 0.6 | 1 | – | ||||
| F1 | SS 430 | 0.12 | 1.0 | 1.0 | 0.04 | 0.03 | 15,0 – 18,0 | 0.0 | 1 | – | ||||
| Stainless Steel Bolts | Class | Tensile Stress Rm MPa (N/mm2) minimum | Yield Strength Rp 0.2 Mpa (N/mm2) minimum | AL Minimum Elongation | Diameter |
|---|---|---|---|---|---|
| Stainless Steel Bolts | 70 | 700 | 450 | 0.4d | =<M20 |
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.
Stainless Steel 321/321H Washers consist mainly of chromium (17–19%), nickel (9–12%), and titanium and provide stabilization against carbide precipitation at high temperatures. 321H grade has higher carbon content, improving high-heat creep strength and toughness. These washers show superior resistance to oxidation, intergranular corrosion, and chemical attack by sulfuric and phosphoric acids. Having superior tensile and yield strength, they maintain mechanical strength at high stresses. Their superior weldability and durability enable them to be particularly suited for high-reliability applications where high-temperature resistance and long-term dependability are both vital.
Stainless Steel 321/321H Washers are best suited for applications that require high performance at severe conditions. They are commonly employed in aerospace industries, such as components of engines and structural assemblies at high heat. In automobiles, they are employed in exhaust systems where thermal stability is of prime importance. Such washers also find considerable application in petrochemical and chemical processing equipment due to their resistance against sulfuric and phosphoric acids. Also, they are used in power generation and heat exchangers to provide stability, strength, and extended service life in harsh operating conditions where regular washers would not be able to perform.
Poang Fasteners is a leading manufacturer and supplier of high-quality fasteners in Da Nang, Vietnam, with over 8 years of experience serving global industries.
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