HASTELLOY C™
WHAT IS HASTELLOY C™?
Hastelloy C is an alloy composed of nickel, molybdenum, chromium and iron, Hastelloy™ Alloy-C maintains its outstanding properties in extreme heat, holding its strength and resisting oxidation. Hastelloy C is also resists chlorine and compounds with chlorine, as well as strong oxidizing acids, acid mixes and salts. One of the most corrosion-resistant alloys, it's exceptional in high-stress applications and in environments prone to repeated thermal shock.
HASTELLOY C FORGINGS
Hastelloy has become popular because of its staggering list of achievements, but corrosion resistance remains at the top of the list. With nickel, molybdenum and chromium in the mix, Hastelloy C is highly weldable and offers tremendous heat resistance that makes it perfect for applications in seals, springs and other pieces of mechanical structures such as aerospace parts.
CHEMICAL COMPOSITION OF HASTELLOY C™
- Carbon 0.15 max
- Tungsten 3.75-5.25
- Iron 4.5-7.0
- Chromium 15.5-17.5
- Molybdenum 16.0-18.0
- Vanadium 0.20-0.40
- Manganese 1.0 max
- Silicon 1.0 max
- Phosphorus 0.04 max
- Sulfur 0.03 max
- Nickel remainder
HEAT TREATMENT OF HASTELLOY C™
- Anneal: Heat at 2235=20 deg F for a length of time dedicated by the mass and cross section. Air cool generally to 1 to 2 hours.
- Age hardening after annealing:
- Hold at 1575°-1600°F (857°-871°C) for 8-10 hours
- Air-cool to Rockwell C 35-40
- Hold castings for 16 hours at aging temperature to achieve hardness and high yield strength (not required or suggested to resist corrosion on for strength at high temperatures).
APPLICATIONS OF HASTELLOY C™
- Combustion chambers
- Heat-treating equipment
- Collector rings, combustion chambers and exhaust stacks for high-heat applications in for conventional aircraft and jets
- Pipe connections, c and valves for oil refinery, chemical and petrochemical applications
MACHINABILITY OF HASTELLOY C™
- Can be machined at low cutting speeds
- Use sintered carbide cutting tools and grind to 6-7 degree side clearance and 10-15 degree side rake angle for facing or turning operations
- Use short drill and grind with minimum clearance to clear the work generally about 140 degrees total when drilling
- Use sulfur-based oil coolant when drilling, or when turning, facing, or boring at higher speeds
WORKABILITY OF HASTELLOY C™
- Preheat to temperatures to 2200°-2250° F (1204°-1232°C)
- Forge with hot working procedures:
Jiangsu ToLand Alloy Co., Ltd. Was founded in May 1991. The factory covers an area of 200, 000 square meter. The registered capital of the company is RMB 125 million. As"A Key High-tech Enterprise of National Torch Plan"and"A high-tech enterprise in Jiangsu Province", the company specializes in research & development and production of super alloys, corrosion resistant alloys, precision alloys, and other special alloys and their products. It has state of the art special smelting and precision casting production lines as well as domestic leading forging & rolling, drawing and tube production lines and it has formed a product system which super alloy, special alloy pipe and revestment precision casting structure are three major products as the core.
Over the years, the company has always been adhering to the corporate spirit of "Loyalty, Innovation, Creditworthiness and Diligence" and the business philosophy of "Technological Innovation, Reliable Quality, Continuous Improvement and Customer Satisfaction". It enjoys a high recognition and reputation among customers and in the society.
The company will continue investing in world class research and development of new technologies and products, broadening of product chains, and exploration of domestic and international markets, in order to become a research & development and production base of high-performance alloys and derivative products as well as an enterprise with independent intellectual property rights and core competitiveness at home and abroad.
