Hastelloy

Hastelloy Steel grades at a glance with ASTM standard specification and equivalent chart

Hastelloy alloy is a nickel based alloy. It comes in primarily two groups; one with more molybdenum and the other with more chromium. Both are called the Hastelloy. They are all exceptionally resistant to strong oxidizing solutions and have high durability in reducing agents. They are also resistant to intergranular corrosion because of the low carbon content and the less carbide precipitation with welding. The Hastelloy application list is longer. There are different forms and shapes of products manufactured with different standards that are used in a variety of applications. They are used in sour gas wells, waste treatment plants, chemical processing components, pulp and paper industries, reaction vessels in chemical plants, heat exchangers, fans and in food processing equipment as well. The Hastelloy properties are unique in that they are very much resistant to oxidation and reduction; they perform well under cryogenic temperatures and in high temperatures, resistant to wet chlorine gas, resistant to most chloride and chlorine derivatives and so on. The Hastelloy price per kg differs from product to product and you can get a full price list from us. There are many Hastelloy advantages over ordinary metal and other alloys. The resistance to localized corrosion is very high along with resistance to uniform corrosion. The resistance is also good against most salts and brackish waters. The Hastelloy abbreviation is used in the metal industry mostly instead using the full form nickel chromium molybdenum alloys. The Hastelloy alloy composition includes molybdenum, chromium, iron, tungsten, cobolt, manganese, copper, vanadium, phosphorus, silicon and sulfur. Depending on the grade and standards of the alloy, the composition differs. Each of these classes and grades has specific characteristics and applications. The Hastelloy suppliers sell all different grades and the different products as well. The products range from fasteners to pipes and bolts to contour rings. Other then Hastelloy, under the superalloy family many grades are incuding such as Inconel & Monel.

Hastelloy Products

Hastelloy Alloy price per kg

Price

US $56/Kg

Hastelloy Grades

Hastelloy Alloy ASTM Standard

Hastelloy equivalent

CES Name	USA	Werkstoff Nr.
Alloy Name	UNS	WNR
B-2	N10665	DIN 2.4617
C	N10002
C-4	N06455	DIN 2.4610
C-276	N10276	DIN 2.4819
G	N06007
G-3	N06985	DIN 2.4619
N	N10003
S	N06635
W	N10004
X	N06002	DIN 2.4665

Specification of Hastelloy

CORROSION RESISTANT GRADES

• Hastelloy C276
• Hastelloy C22
• Hastelloy B2
• Alloy C4

HEAT RESISTING GRADES

• Alloy S
• Alloy W
• Alloy X

Hastelloy Temperature Range

HASTELLOY® B-3® alloy	400 – 450 Deg C (750 – 840 Degree F)
C-22	400 - 450Deg C (750 – 840 Degree F)
C-276	870 – 1230Deg C (1600 – 2250 Degree F)
® N alloy	704 to 871Deg C (1300 to 1600 Degree F)
HAYNES® 25 alloy	980Deg C (1800 Degree F)
HAYNES® 188 alloy	1095Deg C (2000 Degree F)

Hastelloy Alloy Applications & Uses

• Chemical processing plants
• Expansion bellow
• Nuclear plants & processing
• Industrial equipment

Hastelloy Composition

Properties of Hastelloy Alloy

Corrosion Resistance comparison between most common steel grades

Corrosion Cracking comparison

Grade	Cracking Timing
316L	2 h
254SMO	24 h
625	No Cracking in 1,008 h
C-276	No Cracking in 1,008 h
C-22®	No Cracking in 1,008 h

Seawater Resistance comparison

Hardness full form:

HRB = Hardness Rockwell “B".

For detailed information please refer https://haynesintl.com/alloys/alloy-portfolio_#High-temperature-Alloys