Name: Nickel alloy
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Nickel alloy

Nickel-based superalloys are a class of metallic materials with nickel as the base element (typically >50% content), exhibiting excellent oxidation resistance, corrosion resistance, and high strength at elevated temperatures. These alloys are strengthened by adding elements such as chromium, molybdenum, cobalt, tungsten, aluminum, and titanium. They are widely used in aerospace, energy power, and chemical industries.

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◉ PRODUCT SPECIFICATION

1. Material Standards & Grades

Major Standard Systems:

American Standards: ASTM, AMS (Aerospace Material Specifications)
Chinese Standards: GB/T, YB/T
European Standards: EN, DIN

Common Commercial Grades:

Alloy Type	Typical Grades	Main Characteristics	Temperature Range
Solid Solution Strengthened	Inconel 600, Inconel 625	Good high-temperature strength and oxidation resistance	≤1100°C
Precipitation Strengthened	Inconel 718, Waspaloy	Excellent comprehensive performance, widely used	≤700°C
Corrosion-Resistant	Hastelloy C-276, Incoloy 825	Outstanding corrosion resistance	≤1100°C
Wear-Resistant	Monel K-500	Good strength and corrosion resistance	≤600°C

2. Chemical Composition Ranges (% by weight)

Alloy Element	Content Range	Main Function
Nickel (Ni)	50-70%	Matrix element, provides austenitic base
Chromium (Cr)	10-25%	Improves oxidation and corrosion resistance
Iron (Fe)	0-20%	Adjusts microstructure, reduces cost
Molybdenum (Mo)	0-15%	Enhances strength and corrosion resistance
Cobalt (Co)	0-20%	Improves high-temperature performance
Tungsten (W)	0-10%	Solid solution strengthening
Aluminum (Al)	0-5%	Precipitation strengthening (γ' phase)
Titanium (Ti)	0-4%	Precipitation strengthening (γ' phase)
Niobium (Nb)	0-5%	Formation of γ'' and δ phases

3. Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)	Service Temperature
Inconel 600	550-690	240-345	35-55	150-220	≤1100°C
Inconel 718	1240-1450	1030-1240	12-25	330-410	≤700°C
Inconel 625	830-1030	410-620	30-55	200-250	≤1100°C
Hastelloy C-276	690-890	310-415	40-60	180-220	≤1100°C

4. Physical Properties

Property	Inconel 600	Inconel 718	Hastelloy C-276
Density (g/cm³)	8.47	8.19	8.89
Melting Point (°C)	1370-1425	1260-1335	1323-1371
Thermal Conductivity (W/m·K)	14.8	11.4	10.8
Thermal Expansion Coefficient (10⁻⁶/K)	13.3	13.0	11.2
Electrical Resistivity (μΩ·m)	1.03	1.25	1.30

5. Product Forms & Specifications

Product Form	Available Sizes	Standards	Applications
Bar/Rod	5-300mm diameter	ASTM B446	Turbine disks, shafts
Plate/Sheet	0.5-100mm thickness	ASTM B443	Combustion chambers, casings
Pipe/Tube	3-500mm OD, 0.5-50mm wall	ASTM B444	Heat exchangers, pipelines
Wire	0.1-10mm diameter	ASTM B166	Welding, fasteners
Forgings	Custom sizes	AMS 5662	Critical structural components

6. Heat Treatment Specifications

Grade	Solution Treatment	Aging Treatment	Cooling Method
Inconel 600	1095-1150°C	-	Rapid cooling
Inconel 718	955-1010°C	720°C/8h + 620°C/8h	Furnace cooling
Inconel 625	1095-1205°C	-	Rapid cooling
Hastelloy C-276	1120-1175°C	-	Rapid cooling

7. Corrosion Resistance Performance

Corrosion Type	Inconel 600	Inconel 625	Hastelloy C-276
Oxidation Resistance	Excellent	Excellent	Excellent
Chloride Stress Corrosion	Good	Excellent	Excellent
Sulfuric Acid Resistance	Fair	Good	Excellent
Hydrochloric Acid Resistance	Poor	Fair	Excellent
Pitting Resistance	Good	Excellent	Outstanding

8. Applications

Aerospace Industry:

Aircraft engine turbine blades and disks
Rocket engine components
Aerospace fasteners and structural parts

Energy Industry:

Gas turbine components
Nuclear reactor core components
Oil and gas extraction equipment

Chemical Industry:

Chemical reaction vessels
Heat exchangers
Pumps and valves

9. Quality Control & Testing

Testing Items:

Chemical composition analysis
Mechanical property testing
Non-destructive testing (UT, RT, ET)
Microstructure examination
Corrosion performance testing
High-temperature performance testing

Quality Certification:

ISO 9001 Quality Management System
NADCAP Special Process Certification
Aerospace Material Certifications
Nuclear Quality Assurance Certifications

Technical Advantages:

Excellent high-temperature mechanical properties
Outstanding oxidation and corrosion resistance
Good fatigue and creep resistance
Stable microstructure at high temperatures
Reliable performance in extreme environments

All products are supplied with complete material certifications and can be customized according to specific application requirements.

◉ Surfcae selection

SURFACE	CHARACTERISTIC	SUMMARY OF MANUFACTURING METHOD	APPLICATION
NO.1	Silvery white	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.1	lackluster	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.2D	Silvery white	After cold rolling, heat treatment and pickling are carried out	General material, deep material
NO.2B	Gloss is stronger than No.2D	After No.2D treatment, the final light cold rolling is carried out through the polishing roller	The general material
BA	As bright as a sixpence	No standard, but usually a bright annealed surface with high reflectivity.	Building materials, kitchen utensils
NO.3	Rough lapping	Grind with 100~200# (unit) strop tape	Building materials, kitchen utensils
NO.4	Intermediate grinding	Polished surface obtained by grinding with 150~180# strop abrasive tape	Building materials, kitchen utensils
NO.240	Fine lapping	Grinding with 240# strop abrasive tape	kitchenware
NO.320	Very fine grinding	Grinding was carried out with 320# strop abrasive tape	kitchenware
NO.400	The luster is close to BA	Use 400# polishing wheel to grind	General timber, building timber, kitchen appliances
HL	Hairline grinding	Suitable particle material for hair stripe grinding (150~240#) with many grains	Building, construction material
NO.7	It's close to mirror grinding	Use a 600# rotary polishing wheel to grind	For art or decoration
NO.8	Mirror ultrafinish	The mirror is ground with a polishing wheel	Reflector, for decoration