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We at Kalpataru Piping Solutions are delighted to offer you a wide range of high-quality Hastelloy products, including pipes and tubes, buttweld fittings, flanges, round bars, wires, forged fittings, instrumentation valves, olets, plates and sheets, filler wire, compression fittings, long radius bends, pipe spools, wiremesh, perforated sheets, and fasteners.

As a leading manufacturer and supplier of  Hastelloy, HastelloyC276 , we take pride in our commitment to providing the best products and services to our customers. Our Hastelloy products are made from the finest qualityof Hastelloy materials, ensuring durability, strength, and excellent performance in even the most demanding conditions.

Our team of experts uses the latest technology and equipment to design, manufacture, and test our products, ensuring that they meet the highest standards of quality and reliability. We offer a wide range of sizes and specifications to meet your specific needs, and we can also customize our products to your exact requirements.

What is Hastelloy?

Hastelloy, one of the most versatile alloys, finds extensive application across diverse industrial sectors. Its composition includes chromium, carbon, cobalt, tungsten, molybdenum, vanadium, aluminum, titanium, niobium, iron, copper, nickel, and other elements. Within the Hastelloy family, various grades, such as Alloy C, C4, B, B2, C276, and more, exist, each with distinct compositions tailored for specific purposes.

Hastelloy metals exhibit exceptional high-temperature strength in vacuum atmospheres, making them ideal for inert applications in the chemical process industry involving phosphoric, hydrochloric, sulfuric, and acetic acid. Other manufacturers also produce Hastelloy variants with identical chemical and mechanical properties, offering excellent alternatives to the various Hastelloy brand alloys. These corrosion-resistant superalloys are extensively used in the chemical processing, aerospace, industrial gas turbine, and marine industries.

Furthermore, due to their reliable performance, Hastelloy alloys are gaining popularity in the energy, health and environmental, oil and gas, pharmaceutical, and flue gas desulfurization sectors. Their remarkable characteristics make them indispensable in a wide range of demanding applications, solidifying their reputation as a top choice for critical industrial operations.

Hastelloy alloys are made from a combination of nickel, molybdenum, chromium, iron, and other elements. Different grades of Hastelloy alloys have different compositions, which determine their properties and suitability for different applications. Some common grades of Hastelloy alloys include Hastelloy C-276, Hastelloy C-22, Hastelloy B-2, and Hastelloy X.

Hastelloy alloys have excellent corrosion resistance in both oxidizing and reducing environments, making them ideal for use in chemical processing applications where exposure to corrosive chemicals is common. They also have good mechanical properties, high-temperature strength, and resistance to cracking and stress corrosion.

Overall, Hastelloy alloys are known for their high performance, durability, and versatility in a wide range of challenging environments.

Specification of Hastelloy:


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

Hastelloy Round Bar Specifications:

Specifications : ASTM B574 / ASTM SB574
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 5 mm To 500 mm
Diameter : 0.1 mm to 100 mm
Length : 100 mm To 3000 mm Long & Above
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Tolerance : H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.

Hastelloy Buttwelded Fittings Specifications:



ASTM B366 / ASME SB366



Seamless Butt Weld Fittings: 1/2″ – 10″, Welded Butt Weld Fittings: 1/2″ – 48″



ASME/ANSI B16.9, ASME B16.28, MSS-SP-43



5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75



Seamless / Welded / Fabricated


Properties of Hastelloy Alloy:

Corrosion Resistance comparison between most common steel-grades

Alloy name

Critical Pitting Temp

in Acidified 6% FeCl3

Acidified 6% FeCl3 Critical Crevice Temperature
°F °C °F °C
316L 59 15 32 0
254SMO 140 60 86 30
625 212 100 104 40
C-276 >302 >150 131 55
C-22® >302 >150 176 80

Hastelloy Alloy ASTM Standard:

Alloy UNS Bars Pipes
C-4 N06455 ASTM B574/ B575/ B619 B622 / B619 / SB 619 / B626 / SB 626
C-22 N06022 ASTM B564/ B472/ B574 B622 / B619 / SB 619/ B626 / SB 626
C-2000 N06200 ASTM B564/ B472/ B574 B622 / B619 / SB 619/ B626 / SB 626
G-30 N06030 ASTM B472/ B581 B622 / B619 / SB 619/ B626 / SB 626
G-35 N06035 ASTM B564/ B472/ B574 B622 / B619/ SB 619 / B626 / SB 626
C-276 N10276 ASTM B564/ B472/ B574 B622 / B619 / SB 619/ B626 / SB 626
Hastelloy X N06002 ASTM B564/ B472/ B574 B622 / B619 / SB 619 B626 / SB 626
HAYNES ® HR-120, NAS H38X N08120   B407 / B514 / B515

Hastelloy Composition:

Alloy Type Cr% C% Co% W% Mo% V% Ai% Ti% Nb % Fe% Cu% Ni% Other %
Alloy B 0.6 0.1 1.25 28 0.3 5.5 rest / bal Mn 0.80; Si 0.70
Alloy B2 1 0.02 1 26.0-30.0 2 rest / bal Mn 1.0, Si 0.10
Alloy C276 14.0-16.5 0.02 2.5 3.0-4.5 15.0-17.0 0.35 4.0-7.0 rest / bal Mn 1.0; Si 0.05
Alloy X 22 0.1 1.5 0.6 9 18.5 rest / bal Mn 0.6; Si 0.60
Alloy C 16 0.07 1.25 40 17 0.3 5.75 rest / bal Mn 1.0; Si 0.70
Alloy C4 14.0-18.0 0.015 2 14.0-17.0 0..70 3 rest / bal Mn 1.0 ; Si 0.08
Alloy N 7 0.06 0.25 0.2 16.5 3 0.1 rest / bal Mn 0.40; Si 0.25; B 0.01
Alloy S 15.5 0.02 2 1 14.5 0.6 0.2 3 rest / bal Mn 0.50; Si 0.40; B0.0009; La 0.02
Alloy F 22 0.02 1.25 0.5 6.5 2.1 21 rest / bal Mn 1.50; Si 0.50
Alloy G 21.0-23.5 0.05 2.5 1 5.5-7.5 1.7-2.5 18.0-21.0 1.5-2.5 rest / bal Mn 1.0-2.0; P0.04; Si 1.0; 
Alloy G2 23.0-26.0 0.03 5.0-7.0 0.70-1.50 rest / bal 0.70-1.20 47.0-52.0 Mn 1.0; Si 1.0
Alloy W 5 0.06 1.25 24.5 5.5

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

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

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:

Grade Quiescent Flowing
No. of Attacked Sites Max. Depth No. of Attacked Sites Max. Depth
316L A:2, B:2 A:1.33, B:2.27 A:2, B:2 A:0.48, B:0.15
254SMO A:2, B:2 A:0.76, B:1.73 A:2, B:2 A:0.01, B:<0.01
625 A:1, B:2 A:0.18, B:0.04 A:2, B:2 A:<0.01, B:<0.01
C-276 A:1, B:1 A:0.10, B:0.13 A:0, B:0 A:0, B:0
C-22® A:0, B:0 A:0, B:0 A:0, B:0 A:0, B:0

Hastelloy Hardness full form:

HRB = Hardness Rockwell “B”.

Hastelloy Grade Sheets HRB Plates HRB
C22 93 95
C276 90 87
N 96
X 54 54

At Kalpataru Piping Solutions, we believe in building long-lasting relationships with our customers by providing exceptional service, support, and value. We strive to exceed your expectations at every step of the way, from ordering to delivery and beyond.

We invite you to browse our website and explore our extensive range of Hastelloy products. Our knowledgeable team is always available to answer any questions you may have or provide you with a quote for your specific needs.

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