Table Of Content
One instance, where the Hastelloy Alloy C276 Cold Drawn Round Bar particularly finds use is in the recovery of naturally occurring sour gas. Generally, sour gas environments consist of many toxic compounds such as carbon dioxide and chlorides apart from hydrogen sulphide. Conventionally used carbon steel grades, if used in this application, may crack. Thus leading to an unsafe and flammable environment. However, if AMS 5750 hot rolled round bar were to be used, the equipment used in this application was to function better.
To elaborate, the Hastelloy C276 Flat Bar is resilient to sulphur stress cracking which means that the equipment would work without the ASME SB574 Hastelloy C276 Square Bar getting cracked and there would be no leaks of this flammable gas. Thus the WERKSTOFF NR. 2.4819 hex bar, is considered to be one of the better alloy groups that are able to handle stress caused due to these gases. An additional characteristic that makes the ASTM B574 UNS N10276 Bright Bar is its heat resistance behaviour. Typically sour gas environments have elevated temperature settings, which is one more reason to cause the equipment to crack. But since the Hastelloy C276 Round Bar is resilient to heat, many of our buyers involved in sour gas applications prefer using the Nickel Alloy C276 Rod over other alloys.
| Standard Specifications | ASTM B574 / ASTM SB574 |
| Round bars Dimensions | JIS, AISI, ASTM, DIN, BS, ASME, EN |
| Hastelloy C276 Rod Size |
5 To 500 mm |
| Alloy C276 Round bars Diameter | 0.1 to 100 mm |
| C276 Alloy Bars Length | 100 To 3000 mm Long and Above |
| Round bars Finish | Turned, Polished, Bright, Black, Rough, NO.4 Finish,BA Finish, Matt Finish |
| Hastelloy C276 Bars Tolerance | H13K9, K10, H8, K11, H12, H9, K12, H10, H11 or as per clients’ requirements |
| Form of Hastelloy C276 Rod | Square, Billet, Forging, Hex (A/F), Rectangle, Ingot, Round Etc. |
WERKSTOFF NR. 2.4819 hot rolled rod
AMS 5750 Flat Bar
ASME SB574 Alloy C276 Cold Drawn Round Bar
ASTM B574 UNS N10276 Bright Bar
Alloy C276 Round bar
5mm To 500 mm
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 52,000 , MPa – 355 | Psi – 1,15,000 , MPa – 790 | 40 % |
| STANDARD | UNS | WNR Material Number | AFNOR | EN | JIS | BS | GOST |
| C276 | N10276 | 2.4819 | – | NiMo16Cr15W | NW 0276 | – | ХН65МВУ |
| C276 | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr |
| Balance | 0.010 max | 15.00 – 17.00 | 1.00 max | 0.08 max | 4.00 – 7.00 | 0.04 max | 0.03 max | 2.5 max | 14.50 – 16.50 |
The material is a nickel chromium alloy with cobalt, vanadium and tungsten in its composition. Due to the added elements, the alloy is very much corrosion resistant, strong, oxidation resistant and is intended for high temperature services. Therefore it is used in pollution control liners, ducts, scrubbers, fans and housings, sour gas wells, waste treatment plants, pulp and paper industries, flue gas desulfurization systems, pharmaceutical industry, food processing industry, chemical processing components, heat exchangers, evaporators and other high corrosion applications. The material is also resistant to most organic acids. So it could be used in any kind of corrosive environment.