hastelloy C276 and 316l Steel
Gnee Steel
What is the difference between hastelloy C276 and 316l?
Hastelloy C276 and 316L are both corrosion resistant alloys, but Hastelloy C276 excels in harsh, highly corrosive environments due to its higher nickel and molybdenum content. 316L, on the other hand, is a more cost-effective option for less demanding applications with moderate corrosion resistance requirements.
Gnee Steel
What is the difference between 625 and C276?
Both Inconel 625 and Hastelloy C-276 are nickel-chromium-molybdenum based alloys. They both have excellent corrosion resistance and good strength. Comparing the two alloys, Inconel 625 has a higher chromium content, while Hastelloy C-276 has a higher molybdenum content.
Chemical Composition - difference between Hastelloy C276 and 316L
Hastelloy C276 has a more complex and alloy-rich composition compared to 316L stainless steel, leading to enhanced corrosion resistance and mechanical properties.
Hastelloy C276:
Nickel (Ni): ~57% – Provides excellent corrosion resistance in a wide range of environments.
Chromium (Cr): ~16% – Enhances oxidation resistance.
Molybdenum (Mo): ~16% – Improves resistance to pitting and crevice corrosion.
Iron (Fe): ~5% – Base metal, lower than in stainless steel.
Tungsten (W): ~4% – Improves high temperature strength and corrosion resistance.
Cobalt (Co): ≤ 2.5% – Improves overall strength and durability.
Manganese (Mn): ≤ 1% – Aids in deoxidation during production.
Vanadium (V): ≤ 0.35% – Improves overall strength.
Carbon (C): ≤ 0.01% – Minimizes intergranular corrosion.
Silicon (Si): ≤ 0.08% – Low levels prevent oxidation during welding.
Sulfur (S): ≤0.03% – Low levels to avoid sulfide inclusions.
316L Stainless Steel:
Iron (Fe): Balance (~65-70%) – Main constituent, providing structure.
Chromium (Cr): 16-18% – Provides corrosion resistance and hardness.
Nickel (Ni): 10-14% – Improves overall corrosion resistance.
Molybdenum (Mo): 2-3% – Enhances resistance to pitting and crevice corrosion.
Manganese (Mn): ≤ 2% – Acts as a deoxidizer and enhances hardness.
Silicon (Si): ≤ 1% – Improves oxidation resistance.
Phosphorus (P): ≤ 0.045% – Kept low to avoid brittleness.
Sulfur (S): ≤ 0.03% – Low levels to maintain toughness.
Carbon (C): ≤ 0.03% – Low carbon content minimizes carbide precipitation.
Corrosion Resistance - difference between Hastelloy C276 and 316L
Hastelloy C276 has excellent corrosion resistance in both oxidizing and reducing environments, making it ideal for severe conditions, while 316L has good corrosion resistance for less corrosive environments.
Hastelloy C276:
Oxidizing conditions: Excellent corrosion resistance, effective against nitric acid and other strong oxidizing agents.
Reducing conditions: Excellent corrosion resistance, especially for sulfuric acid, hydrochloric acid and phosphoric acid.
Pitting and crevice corrosion: Excellent corrosion resistance even in high temperature, chloride-containing environments.
Stress corrosion cracking: High corrosion resistance, minimizing the risk of failure under stress in corrosive environments.
Special applications: Suitable for oxidizing and reducing environments, effective against extreme temperatures and pressures.
316L Stainless Steel:
Oxidizing Conditions: Good corrosion resistance, suitable for atmospheric and mildly oxidizing environments.
Reducing Conditions: Moderate corrosion resistance, suitable for less corrosive environments and dilute acid environments.
Pitting and Crevice Corrosion: Good corrosion resistance, better than 304 stainless steel, especially in chloride environments.
Stress Corrosion Cracking: Moderate corrosion resistance, suitable for non-critical applications.
Special Applications: Suitable for marine environments, moderately corrosive chemical processing, and food and pharmaceutical industries, achieving a balance between performance and cost.
Gnee Steel is a supplier of Hastelloy C276 And 316l, covering tubes: Seamless tubes: Size: 4 - 219 mm; Thickness: 0.5 - 20 mm; Welded tubes: Size: 5.0 - 1219.2 mm; Thickness: 0.5 - 20 mm, Plates: Plate thickness 0.1 to 100 mm; Plate width 10-2500 mm, Strips, Alloy round bar sizes: diameter 3-800 mm;, Flat bar sizes: thickness 2-100 mm; Width: 10-500 mm, Hexagonal bar sizes: 2-100 mm;, Wire and extruded profiles. We work with steel mills to provide customers with 625 alloy, and its products meet or exceed many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Hastelloy C276 And 316l pipes, tubes, sheets, strips, plates, round bars, flat bars, forged billets, hexagons, wires and extruded profiles. You are welcome to contact us for a quote at any time at ss@gneesteel.com
