Gnee Steel is a company specializing in the production of Hastelloy C276, Nickel 201, Nickel 202, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We are professionally engaged in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs.
Detailed description of Hastelloy C4 And C276 Alloy Round Bar
Detailed description of Hastelloy C4 And C276 Alloy Round Bar
Hastelloy C-4 and C-276 round bars are high-quality nickel-chromium-molybdenum alloys with excellent corrosion resistance and high-temperature stability. C-4 alloy is specifically designed for superior stability at high temperatures and excellent weldability, while C-276 alloy performs exceptionally well in harsh chemical environments, particularly in resisting pitting and crevice corrosion. Both alloys demonstrate outstanding performance in the chemical, petrochemical, and pollution control industries and are commonly used in the manufacture of shafts, fasteners, and structural components.
What is Hastelloy C4?
Hastelloy C-4 is a nickel-chromium-molybdenum alloy with excellent high-temperature stability. It possesses high ductility and corrosion resistance. Its high-temperature resistance reaches up to 1900°F (1038°C), making it suitable for most chemical process applications in the welded condition.
Hastelloy C4 is a nickel-chromium-molybdenum alloy that offers excellent corrosion resistance in a wide range of chemical process environments, including strong oxidizing agents (such as ferric chloride and cupric chloride), high-temperature contaminated organic and inorganic media, chlorine gas, formic and acetic acids, acetic anhydride, and seawater and brine solutions. This alloy exhibits good resistance to stress corrosion cracking, pitting, and crevice corrosion. The alloy is easily fabricated and welded.
Hastelloy C276 is a nickel-chromium-molybdenum alloy with excellent corrosion resistance in harsh environments. This alloy exhibits good resistance to pitting, crevice corrosion, stress corrosion cracking, and intergranular corrosion. It has excellent corrosion resistance in oxidizing environments and also shows good resistance to carburization, nitriding, and carbonitriding. The alloy is easily fabricated and welded.
Specification of Hastelloy C4/ C276 Round bar
| Specification | ASTM B574 / ASTM SB574 |
| Dimension Standard | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Range | 3.17 MM TO 350 MM DIA |
| Size | Round Bar Size: 3mm~ 800mm Square Bar Size: 4mm* 4mm ~100mm* 100mm Flat Bar Size: 2mm ~ 100mm Hex Bar Size: 2mm ~ 100mm |
| Thickness | 50 mm to 6000 mm Long |
| Length | 1 To 6 Meters, Custom Cut Length |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
Gnee Steel Hastelloy C4 / C276 Round Bar Stock
ASTM B574 Hastelloy C4 Round Bars
Hastelloy C276 Square Bars
Hastelloy C276 Hex Bars
C4 Hastelloy Flat Bars
C22 Hastelloy Rectangular Bar
Hastelloy C276 Threaded Bars
Equivalent Grades of Hastelloy C4 / C276 Round bar
| STANDARD | UNS | WNR. | JIS | GOST | EN | OR |
| Hastelloy C4 | N10665 | 2.4617 | - | - | - | - |
| Hastelloy C276 | N10276 | 2.4819 | NW 0276 | ХН65МВУ | NiMo16Cr15W | ЭП760 |
Chemical Composition of Hastelloy C4 / C276 bar
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| Hastelloy C4 | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | Bal | 1.0 max | 2.0 max | 26 – 30 | 0.04 max |
| Hastelloy C276 | 0.010 max | 1.00 max | 0.08 max | 0.03 max | 2.50 max | 50.99 min* | 14.50 – 16.50 | 4.00 – 7.00 | 15.00 – 17.00 | 0.04 max |
Mechanical Properties of Hastelloy C4 / C276 Round bar
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy C4 | 9.2 g/cm3 | 1370 °C (2500 ºF ) | Psi – 1,10,000 , MPa – 760 | Psi – 51000 , MPa – 350 | 40 % |
| Hastelloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
Dimensions Standard Of Hastelloy C4 / C276 Round bar
| Diameter or Width (mm) |
Weight per meter | Sectional Area | Perimeter | |||
| Square (kg) |
Round (kg) |
Square (cm²) |
Round (cm²) |
Square (cm) |
Round (cm) |
|
| 5.0 | 0.20 | 0.15 | 0.25 | 0.20 | 2.0 | 1.57 |
| 5.5 | 0.24 | 0.19 | 0.30 | 0.24 | 2.2 | 1.78 |
| 6.0 | 0.28 | 0.22 | 0.36 | 0.28 | 2.4 | 1.88 |
| 7.0 | 0.38 | 0.30 | 0.49 | 0.38 | 2.8 | 2.20 |
| 8.0 | 0.50 | 0.39 | 0.64 | 0.50 | 3.2 | 2.51 |
| 9.0 | 0.64 | 0.50 | 0.81 | 0.64 | 3.6 | 2.83 |
| 10 | 0.73 | 0.63 | 1.00 | 0.79 | 4.0 | 3.14 |
| 11 | 0.95 | 0.75 | 1.21 | 0.95 | 4.4 | 3.46 |
| 12 | 1.13 | 0.89 | 1.44 | 1.13 | 4.8 | 3.77 |
| 14 | 1.54 | 1.21 | 1.96 | 1.54 | 5.6 | 4.40 |
| 16 | 2.01 | 1.58 | 2.56 | 2.01 | 6.4 | 5.03 |
| 18 | 2.54 | 2.00 | 3.24 | 2.54 | 7.2 | 5.65 |
| 20 | 3.14 | 2.47 | 4.00 | 3.14 | 8.0 | 6.28 |
| 22 | 3.80 | 2.98 | 4.84 | 3.80 | 8.8 | 6.91 |
| 25 | 4.91 | 3.85 | 6.25 | 4.91 | 10.0 | 7.85 |
| 28 | 6.15 | 4.83 | 7.84 | 6.16 | 11.2 | 8.80 |
| 32 | 8.04 | 6.31 | 10.24 | 8.04 | 12.8 | 10.05 |
| 36 | 10.17 | 7.99 | 12.96 | 10.18 | 14.4 | 11.31 |
| 40 | 12.56 | 9.86 | 16.00 | 12.57 | 16.0 | 12.57 |
| 45 | 15.90 | 12.49 | 20.25 | 15.90 | 18.0 | 14.14 |
| 50 | 19.62 | 15.41 | 25.00 | 19.64 | 20.0 | 15.71 |
| 56 | 24.62 | 19.34 | 31.36 | 24.63 | 22.4 | 17.59 |
| 63 | 31.16 | 24.47 | 36.69 | 31.17 | 25.2 | 19.79 |
| 71 | 39.57 | 31.08 | 50.41 | 39.59 | 28.4 | 22.31 |
| 80 | 50.24 | 39.46 | 64.00 | 50.27 | 32.0 | 25.13 |
We ensure that every product is manufactured using high-quality raw materials. Before shipping to customers, we conduct comprehensive testing on every product.
Petrochemical industry
Power generation industry
Food processing industry
Oil and gas industry
Sugar industry
Gnee Steel is a professional manufacturer of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ru@gneesteelgroup.com for a quote.