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Introduction
ASTM B625 covers nickel alloy
plate, sheet, and strip designed for applications requiring excellent corrosion
resistance, high strength, and reliable performance in severe industrial
environments. These nickel alloys provide superior resistance against pitting,
crevice corrosion, stress corrosion cracking, and oxidation in aggressive
chemical and high-temperature conditions.
ASTM B625 nickel alloy
plates, sheets, and strips are widely used in chemical processing plants, oil
and gas industries, offshore applications, power generation plants, pollution
control systems, marine equipment, heat exchangers, pharmaceutical equipment,
and process industries where long-term corrosion resistance and durability are
essential.
The specification ensures
controlled chemical composition, excellent mechanical properties, dimensional
accuracy, and superior fabrication characteristics for critical engineering
applications.
Ladhani Metal Corporation is
a manufacturer, supplier, and exporter of ASTM B625 Nickel Alloy Plate, Sheet
& Strip, supplying high-quality nickel alloy materials for chemical,
marine, power generation, and industrial applications worldwide.
Applicable Standard
Standard Specification: ASTM
B625
Organization: ASTM
International
Title: Standard Specification
for Nickel Alloy Plate, Sheet, and Strip
This specification covers
nickel alloy plate, sheet, and strip products intended for applications requiring
excellent corrosion resistance, strength, and durability in highly corrosive
environments.
Forms of Supply
ASTM B625 nickel alloy
products are supplied in the following forms:
• Nickel Alloy Plates
• Nickel Alloy Sheets
• Nickel Alloy Strips
• Hot Rolled Plates
• Cold Rolled Sheets
• Precision Strips
• Cut-to-Size Plates
• Slit Strips
• Fabrication-Ready Materials
• Custom Dimensions
Grades Covered Under ASTM B625
UNS N08904, UNS N08925, UNS
N08031, UNS N08932, UNS N08926, UNS R20033
Supply Condition
• Hot Rolled Condition
• Cold Rolled Condition
• Annealed Condition
• Solution Annealed Condition
• Pickled Condition
• Fabrication-Ready Condition
Surface Finish
• Mill Finish
• No.1 Finish
• 2B Finish
• Bright Annealed Finish
• Pickled Finish
• Polished Finish
Standard Sizes
Plates, Sheets & Strips
Thickness: 0.3 mm to 100 mm
Width: 10 mm to 2500 mm
Length: Up to 12000 mm
Custom thicknesses, widths,
lengths, slit strips, and cut-to-size materials are available as per customer
requirements.
Chemical Composition of ASTM B625
|
Element |
UNS N08904 |
UNS N08925 |
UNS N08932 |
UNS N08031 |
UNS N08926 |
UNS R20033 |
|
Carbon, Max % |
0.02 |
0.02 |
0.02 |
0.015 |
0.02 |
0.015 |
|
Manganese, Max % |
2.0 |
1.0 |
2.0 |
2.0 |
2.0 |
2.0 |
|
Phosphorus, Max % |
0.045 |
0.045 |
0.025 |
0.02 |
0.03 |
0.02 |
|
Sulfur, Max % |
0.035 |
0.03 |
0.01 |
0.01 |
0.01 |
0.01 |
|
Silicon, Max % |
1.0 |
0.5 |
0.4 |
0.3 |
0.5 |
0.5 |
|
Nickel, % |
23.00–28.00 |
24.00–26.00 |
24.0–26.0 |
30.0–32.0 |
24.00–26.00 |
30.0–33.0 |
|
Chromium, % |
19.00–23.00 |
19.00–21.00 |
24.0–26.0 |
26.0–28.0 |
19.00–21.00 |
31.0–35.0 |
|
Molybdenum, % |
4.0–5.0 |
6.0–7.0 |
4.5–6.5 |
6.0–7.0 |
6.0–7.0 |
0.50–2.0 |
|
Copper, % |
1.0–2.0 |
0.8–1.5 |
1.0–2.0 |
1.0–1.4 |
0.5–1.5 |
0.30–1.20 |
|
Nitrogen, % |
— |
0.10–0.20 |
0.15–0.25 |
0.15–0.25 |
0.15–0.25 |
0.35–0.60 |
|
Iron |
Balance |
Balance |
Balance |
Balance |
Balance |
Balance |
Mechanical
Properties
|
UNS
Grade |
Product
Form |
Tensile
Strength, Min (ksi [MPa]) |
Yield
Strength (0.2% Offset), Min (psi [MPa]) |
Elongation
in 2 in. or 50.8 mm (4D), Min (%) |
Rockwell
Hardness (or Equivalent) |
|
UNS N08904 |
Sheet |
71 [490] |
31,000 [215] |
35 |
70–90 HRB |
|
Strip |
71 [490] |
31,000 [215] |
35 |
70–90 HRB |
|
|
Plate |
71 [490] |
31,000 [215] |
35 |
70–90 HRB |
|
|
UNS N08925 |
Sheet |
87 [600] |
43,000 [295] |
40 |
— |
|
Strip |
87 [600] |
43,000 [295] |
40 |
— |
|
|
Plate |
87 [600] |
43,000 [295] |
40 |
— |
|
|
UNS N08932 |
Plate |
87 [600] |
44,000 [305] |
40 |
— |
|
UNS N08031 |
Sheet |
94 [650] |
40,000 [276] |
40 |
— |
|
Strip |
94 [650] |
40,000 [276] |
40 |
— |
|
|
Plate |
94 [650] |
40,000 [276] |
40 |
— |
|
|
UNS N08926 |
Sheet |
94 [650] |
43,000 [295] |
35 |
— |
|
Strip |
94 [650] |
43,000 [295] |
35 |
— |
|
|
Plate |
94 [650] |
43,000 [295] |
35 |
— |
|
|
UNS R20033 |
Sheet |
109 [750] |
55,000 [380] |
40 |
— |
|
Strip |
109 [750] |
55,000 [380] |
40 |
— |
|
|
Plate |
109 [750] |
55,000 [380] |
40 |
— |
Note:
- A: Hardness
values are provided for information only and shall
not be used as the basis for acceptance or rejection, provided all other specified
mechanical properties are satisfied.
Key Features of ASTM B625 Plate, Sheet &
Strip
• Excellent corrosion
resistance
• Superior resistance to pitting and crevice corrosion
• Excellent resistance to stress corrosion cracking
• High mechanical strength
• Good oxidation resistance
• Excellent weldability
• Good formability
• Superior fabrication characteristics
• Long service life
• Suitable for aggressive chemical environments
Applications of ASTM B625 Plate, Sheet & Strip
Chemical Processing Industry
• Chemical reactors
• Storage tanks
• Pressure vessels
• Process equipment
• Chemical handling systems
Oil & Gas Industry
• Offshore platforms
• Process equipment
• Heat exchangers
• Separation systems
• Piping components
Marine Industry
• Seawater handling equipment
• Marine structures
• Offshore equipment
• Desalination systems
Power Generation Industry
• Heat exchangers
• Condensers
• Flue gas desulfurization systems
• Pollution control equipment
Pharmaceutical Industry
• Process vessels
• Storage equipment
• Production systems
• Clean processing equipment
Industrial Applications
• Scrubbers
• Chemical storage systems
• Industrial heat transfer equipment
• Corrosion-resistant components
Fabrication and Welding
ASTM B625 nickel alloy
plates, sheets, and strips offer excellent fabrication and welding properties.
• Suitable for conventional
welding processes
• Excellent forming characteristics
• Good machinability
• Reliable welded joint performance
• Excellent dimensional stability
• Suitable for complex fabrication requirements
Proper welding procedures
should be followed to maintain corrosion resistance and mechanical properties.
Heat Treatment
ASTM B625 products are
generally supplied in annealed or solution annealed conditions.
• Solution annealing improves
corrosion resistance
• Annealing enhances ductility and formability
• Controlled heat treatment ensures uniform mechanical properties
• Stress relieving reduces fabrication stresses
• Proper heat treatment improves service performance
Advantages of ASTM B625 Plate, Sheet & Strip
• Outstanding corrosion
resistance
• Excellent resistance to aggressive chemicals
• High mechanical strength
• Superior durability
• Excellent weldability
• Long operational life
• Low maintenance requirements
• Good fabrication characteristics
• Reliable performance in harsh environments
• Suitable for critical industrial applications
Conclusion
ASTM B625 Nickel Alloy Plate,
Sheet & Strip provides excellent corrosion resistance, high strength, and
reliable performance for demanding industrial applications. Available in UNS
N08904, UNS N08925, UNS N08031, UNS N08932, UNS N08926, and UNS R20033 grades,
these nickel alloy products are widely used in chemical processing, oil and
gas, marine, power generation, pharmaceutical, and industrial sectors.
Ladhani Metal Corporation
supplies ASTM B625 Nickel Alloy Plate, Sheet & Strip in various grades,
thicknesses, sizes, surface finishes, and customized dimensions, providing
reliable nickel alloy solutions for critical engineering and industrial
applications worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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