Table Of Content
Alloy 28 Fittings are designed and developed by Navgraha Steel & Engg Company. These Fittings are of high quality. By using authentic stainless steel as raw material, we produce the versatile product. We customize products to withstand severe corrosive conditions well. The raw materials we use are resistant to strong acids and other substances. Our company purchases the high-grade raw material from our renowned suppliers. Alloy 28 Fittings are indistinguishable except for the superior level of carbon in alloy and the addition of up titanium and aluminium. These elements provide good resistance against sulphuric and phosphoric acids as well as improved resistance to localized corrosion, including pitting and crevice corrosion, as well as stress corrosion.
We start the manufacturing only after testing raw material for various physical, chemical, and mechanical properties. When testing raw materials, we also check the same quality parameters of the final product. In addition to this, we do cross verify the thermal properties of Alloy 28 Fittings. Our team works in the most diverse environments and brings the outcome of international quality standards. These Alloy 28 Fittings are used for evaporator tubes, piping, and heat exchangers. In addition, the product can also work well in the oil and gas industry, where corrosion and leakage may occur. Here, the product is exposed to high temperatures and processed to confirm its ductility and durability.
We at Navgraha Steel & Engg Company have a well established manufacturing unit along with a well equipped unit to perform various tests. The company can offer a comprehensive range of Alloy 28 Fittings along with proper documentation and reporting. Our machinists use different grades of raw materials to manufacture products of various sizes and specifications to meet customer needs. We are involved in the production of various ranges of Alloy 28 Fittings. Our company can provide a product which is customized shapes or a variety of sizes and shapes to meet the needs of immediate use. We guarantee the quality of our products. We use suitable materials for packaging so that our packing makes sure that there is no damage during storage and transportation.
| Specifications | ASTM B564 / ASME SA366, ASTM B564 & ASME SA366 |
| Forged Fittings Standards | ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Buttweld Fittings Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Buttweld Fittings Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Forged Fittings Size | 1/8” NB to 4” NB (Socketweld & Screwed-Threaded) |
| Buttweld Fittings Type | Seamless / Welded / Fabricated |
| Forged Fittings Type | Socketweld Fittings, Screwed-Threaded Fittings |
| Forged Fittings Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| Buttweld Fittings Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Buttweld Fittings Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR |
| Alloy 28 | 1.4563 | N08028 | X1NiCrMo31-27-4 | Z1NCDU31-27-03 |






| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
| Alloy 28 | 0.020 max | 0.6 max | 2.0 max | 0.025 max | 0.010 max | 27.00 | 31 | 3.5 | 1.0 |
| Element | Tensile Strength | Yield Strength (0.2%Offset) | Elongation | Hardness |
| Alloy 28 | 500-750 | 220 | 35 % | 230 |
