Inconel625 (alloy 625) N06625 implementation standard
Inconel 625
1. Name
Inconel 625, named Ni-Cr-Mo-Nb alloy by the American Society for Testing and Materials (ASTM).
Material name round rod plate tube
Seamless welded pipe
ASTM UNS
N06625 B446 B443 B444 B704/705
ASME SB446 SB443 SB 444
JIS NCF 625 H4553 G4901 H4552
DIN 2.4856 17752 17750 17751
2. Overview
Inconel 625 is a solid solution strengthened nickel-based deformed alloy with Mo and Nb as the main strengthening elements. It has good durability, fatigue performance, yang chemical resistance and corrosion resistance below 650. It has good strength and toughness from low temperature to 1095 temperature range. Cold working can be used to increase the strength of Inconel 625 alloy. Inconel 625 can resist chloride ion stress corrosion cracking and can be used as jet engine components, aerospace structural components and chemical equipment.
3. Variety and usage status
Hot-rolled bars, cold-rolled and hot-rolled sheets, cold-rolled strips, cold-drawn bars, forgings and cold-drawn seamless and extruded tubes
4. Chemical composition
Nickel: ≥58.00
Chromium: 20.0-23.0
Iron: ≥5
Molybdenum: 8.0-10.0
Niobium + Tantalum: 3.15-4.15
Manganese: ≤0.50
Carbon: ≤0.10
Silicon: ≤0.50
Phosphorus: ≤0.015
Sulfur: ≤0.015
Aluminum: ≤0.40
Titanium: ≤0.40
Cobalt: ≤ 1.00
5. Physical and chemical properties
Density: 0.305 lbs/in3, 8.44 g/cm3
Coefficient of thermal expansion: in/in/°F (m/m/°C)
68 -400°F (20 -204°C): 7.3 x 10·6 (13.1)
68 -600°F (20 -315°C): 7.5 x 10·6 (13.5)
68 -800°F (20 - 427°C): 7.7 x 10·6 (13.9)
Magnetic permeability H = 200 Oersted
Annealing: 1.0006
Modulus of elasticity: ksi in tension (MPa) 30.2 X 103 (208 X 103)
Melting range: 2350 -2460°F (1290 -1350°C)
form
Coils - strips, foils, striplines - profiles, round, flat, square
The main purpose:
ALLOY 625 softened and annealed type (Grade 1) is suitable for use in the chemical processing industry, marine engineering and environmental pollution control equipment. include:
Equipment for producing super phosphoric acid
Nuclear waste reprocessing equipment
Pipes for acid gas production
Riser pipes for oil exploration and its exterior
Offshore industry and ship equipment
Exhaust gas scrubber and damper components
flue lining
Solution-annealed ALLOY 625 can be used in ASME code compliant pressure vessels in high temperature applications up to approximately 1000°C (1830°F). In calculations for designing equipment for use in the temperature range of approximately 500 to 1000°C (930 to 1830°F), the loss of ductility due to prolonged exposure to high temperatures in this range must be considered.
