When you see the Alloy 31 article, Alloy 31 thank you for your attention! The true taste of life is in the word "light"; the demeanor of life is in the word "forget". When the wind comes, the branches of bamboo are bent by the wind; when the wind leaves, the bamboo stands straight again, as if the wind has never come. When the clouds come, a shadow is left at the bottom of the pond; when the clouds leave, the bottom of the pond is pure, as if the clouds have never been here. A broad-minded person will not be angry because of others' neglect, nor will he feel depressed because of others' hurt. OK, let's get back to the point, think of Alloy 31.
Today brings you a high-temperature alloy with high chromium and high nitrogen. It is a new high-temperature alloy formed by adding N on the basis of alloy No. 28, commonly known as alloy No. 31. Alloy 31 is a nitrogen-containing iron nickel chromium molybdenum alloy. The face-centered cubic lattice structure. The nitrogen content of 0.2% stabilizes the austenite phase and reduces the tendency of intermetallic phase precipitation and precipitation. Alloy 31 has excellent corrosion resistance between super austenitic stainless steel and the existing nickel-based alloy .
Alloy 31 Similar grades:
Alloy 31 Chemical composition:
Alloy 31 Physical properties:
Alloy 31 Nickel-based alloy is a nitrogen-containing iron-nickel-chromium-molybdenum alloy with properties between super austenitic stainless steel and existing nickel-based alloy. Alloy 31 (N08031) nickel-based alloy is suitable for use in chemical and petrochemical industries, environmental engineering, oil and gas production and other industrial fields.
Chemical composition:
C≤0.015
Si: ≤0.30
Mn: ≤2.00
P: ≤0.020
S: ≤0.010
Cr: 26.0-28.0
Mo: 6.00-7.00
Ni: 30.0-32.0
N: 0.15-0.25
Cu: 1.00-1.40
Fe: Yu
Physical properties
Fe:
Physical temperature range: 1350~1400℃
Hot capacity: 455J/(kg·℃)
Density: 8.0 g/cm3
Hardness: ≤220HB
Material properties:
· Excellent corrosion resistance in alkaline and acidic halide media
· Still maintain good corrosion resistance to high concentrations of sulfuric acid
· Excellent corrosion resistance and wear resistance in phosphoric acid media
· Excellent corrosion resistance and wear resistance in chlorine dioxide bleach media equipment in the papermaking field, excellent performance of uniform corrosion and local corrosion resistance
· Maintain excellent corrosion resistance in reducing and oxidizing media and boiling peroxidizing nitric acid
· Good processability and welding
· Passed VdTÜV certification, suitable for pressure vessels with operating temperatures of -196 to 550 °C
· Passed ISO 15156/NACE MR 0175 certification, can be used for acid gas applications below VI in petroleum and natural gas industry
· Passed ASME certification, suitable for 427 °C Pressure vessels below (800°F)
Application:
Parts of flue gas desulfurization device
· Wet phosphoric acid production equipment
· Pipelines for sulfuric acid contaminated by chloride heat exchanger
· Seawater and brine pipelines, condenser and chiller pipelines
· Pickling equipment for sulfuric acid and hydrofluoric acid nitric acid
· Pickling equipment for sulfuric acid and hydrofluoric acid nitric acid
· Treatment of waste sulfuric acid
· Evaporation and crystallization of salt
· Pulp and paper industry equipment
· Decomposition of ores, such as filtration of laterite ore in HIPAL equipment
· Petroleum production and refinery
· Synthesis of organic acids and esters
· Fine chemicals
· Transportation and supply pipelines for strain hardening in the field of oil and natural gas transportation
Alloy 31MIN value of mechanical properties of alloys at room temperature:
Alloy 31 Application scope Application fields are: suitable for use in chemical and petrochemical industry, environmental engineering and oil and gas production and other industrial fields.
