Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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Nickel Chromium Molybdenum Alloy Seamless Pipe B690 Alloy 8367 natural gas Oil
YUHONG GROUP deal with Austenitic Stainless Steel, Nickel Alloy Steel(Hastelloy , Monel, Inconel, Incoloy ) seamless and welded pipe and tube already more than 33 years, every year sell more than 80000 tons of steel pipe and tube. Our client already cover more than 70 countries, Like Italy, UK, Gernmany, USA, Canada, Chile, Colombia, Saudi Arabia, Korea, Singapore, Austrial, Poland, France ...
Overview
Iron-nickel-chromium-molybdenum alloy cold-worked annealed or hot-worked annealed seamless tubes and pipes for special corrosive service and heat-resistant applications. Tubes and pipes shall be supplied in solution heat treated and descaled condition. When bright annealed treatment is used, rust removal is not required. Tensile strength, yield strength and elongation shall conform to specified values. Tubes and pipes shall be hydrostatically tested.
AL6XN is a super-austenitic stainless steel with excellent resistance to chloride pitting, crevice corrosion and stress corrosion cracking.AL6XN is a 6-molybdenum alloy developed for and used in highly corrosive environments. It has high nickel (24%), molybdenum (6.3%), nitrogen and chromium content, giving it excellent resistance to chloride stress corrosion cracking, chloride pitting, and excellent general corrosion resistance. AL6XN is primarily used to improve its ability to pitting and crevice corrosion in chloride. It is a formable and weldable stainless steel.
Due to its nitrogen content, AL6XN has greater tensile strength than normal austenitic stainless steels while retaining high ductility and impact strength.
Chemical Composition of ASTM B690 Alloy 8367
| Ni | Cr | Mo | C | N | Mn | Si | P | S | Cu | Fe |
| 23.5-25.5 | 20.00-22.00 | 6.00-7.00 | 0.03 Max | 0.18-0.25 | 2.0 Max | 1.00 Max | .040 Max | 0.03 Max | 0.75 Max | Remainder |
Mechanical Properties of ASTM B690 Alloy 8367
| Temp. °F (°C) | Ult. Tensile Strength, psi | .2% Yield Strength, psi | Elongation in 2”, percent | Charpy V-Notch Toughness, ft-lb |
| -450 (-268) | 218,000 | 142,000 | 36 | 353* |
| -320 (-196) | 196,000 | 107,000 | 49 | 85 |
| -200 (-129) | - | - | - | 100 |
| 70 (21) | 108,000 | 53,000 | 47 | 140 |
| 200 (93) | 99,900 | 49,400 | 47 | - |
| 400 (204) | 903,000 | 40,400 | 46 | - |
| 600 (316) | 86,000 | 36,300 | 47 | - |
| 800 (427) | 87,000 | 36,000 | 48 | - |
ASTM B690 Alloy 8367 Application
Seawater heat exchangers
Tall oil distillation columns and packing
Offshore oil and gas production equipment
Pulp bleaching plant washers, vats, press rolls and pipelines
