Alloy 800HT Round Bars Manufacturer, Stockist and Exporter

Alloy 800HT Round Bars are high-strength nickel-iron-chromium alloys designed for applications requiring excellent resistance to oxidation and carburization. These bars maintain their mechanical properties even at elevated temperatures up to 700°C (1290°F). The “HT” in Alloy 800HT denotes “High Temperature,” reflecting its superior performance in prolonged high-temperature environments. This makes it ideal for use in petrochemical, chemical processing, and power generation industries. The alloy also exhibits exceptional resistance to thermal fatigue and stress corrosion cracking. Its composition is optimized to combine strength with good ductility.

The chemical composition of Alloy 800HT includes nickel, chromium, and iron as the base elements, along with controlled amounts of titanium and aluminum. Titanium stabilizes the structure and prevents carbon-induced carbide formation at grain boundaries. The chromium content ensures good oxidation resistance, while nickel provides toughness and corrosion resistance. Manganese, silicon, and other trace elements further enhance its mechanical properties. These bars are manufactured through precision forging and hot-rolling processes. The consistent microstructure ensures predictable performance in critical applications.

Mechanical properties of Alloy 800HT Round Bars are key to their industrial performance. They exhibit high tensile strength and yield strength at both room and elevated temperatures. The alloy also shows good elongation, making it suitable for forming and machining operations. Hardness remains stable even after prolonged exposure to high temperatures, which reduces the risk of creep. These properties ensure reliability in components like turbine shafts, furnace parts, and heat exchangers. Standard mechanical testing confirms compliance with ASTM and ASME specifications.

Worldwide Alloy 800HT Round Bars Manufacturer, Stockist and Exporter

Alloy 800HT Round Bars are available in a wide range of sizes and diameters, catering to diverse industrial needs. Common diameters range from 12 mm to over 300 mm, with lengths customizable as per client requirements. These bars can be supplied in either hot-finished or cold-drawn condition, depending on the application. Surface finish is smooth, reducing the need for additional machining in certain applications. Tolerance levels are strictly controlled to meet international standards. The versatility in dimensions allows engineers to select the right size for optimal performance.

Heat treatment plays a crucial role in achieving the desired properties in Alloy 800HT Round Bars. Typically, the alloy is solution-annealed at 1090–1150°C and then rapidly cooled. This process enhances toughness, stabilizes the structure, and improves resistance to intergranular corrosion. Controlled cooling prevents the formation of harmful carbides. The heat-treated bars maintain high creep rupture strength and excellent dimensional stability at elevated temperatures. Proper heat treatment ensures long-term reliability in extreme service conditions.

Alloy Alloy Round Bars

Applications of Alloy 800HT Round Bars are extensive in industries exposed to severe environments. They are widely used in petrochemical plants, chemical processing equipment, heat exchangers, furnace components, and nuclear reactors. The combination of high-temperature strength and corrosion resistance makes it suitable for both oxidizing and reducing environments. Its resistance to carburization also allows it to perform well in gas-fired and petroleum-based systems. Engineers prefer Alloy 800HT when long-term durability and safety are critical.

Alloy 800HT Round Bars are compatible with a variety of welding and fabrication techniques. They can be welded using TIG, MIG, or resistance welding methods without significant loss of mechanical properties. Pre-weld and post-weld heat treatments are recommended for high-stress applications. The alloy’s thermal expansion closely matches that of austenitic stainless steels, reducing stress during temperature fluctuations. Proper fabrication ensures extended service life and minimizes maintenance costs. These bars are widely stocked by suppliers to meet urgent industrial demands.

Alloy 800HT Round Bars Specifications

Property Specification / Value
Alloy Type Alloy 800HT
Form Round Bar
Standard ASTM B407, ASTM B625, ASME SB407
Diameter Range 12 mm to 300 mm (custom sizes available)
Length Up to 6 meters (custom lengths available)
Surface Finish Hot-rolled / Cold-drawn / Polished
Heat Treatment Solution Annealed at 1090–1150°C
Density 8.17 g/cm³
Maximum Service Temperature 700°C (1290°F)
Applications Furnace components, heat exchangers, chemical processing equipment, turbine shafts

Chemical Composition

Element Percentage (%)
Nickel (Ni) 30–35
Chromium (Cr) 19–23
Iron (Fe) Balance
Carbon (C) 0.05 max
Manganese (Mn) 1.0 max
Silicon (Si) 1.0 max
Titanium (Ti) 0.15–0.60
Aluminum (Al) 0.15–0.60
Sulfur (S) 0.03 max
Phosphorus (P) 0.03 max

Mechanical Properties

Property Value
Tensile Strength (Rm) 585–750 MPa (85–108 ksi)
Yield Strength (0.2% Proof, Rp0.2) 275 MPa min (40 ksi)
Elongation (A) 30% min
Hardness ≤ 187 HB
Creep Rupture Strength at 700°C (1290°F) 25–30 MPa (approx.)
Modulus of Elasticity 200 GPa (29,000 ksi)
Thermal Conductivity 11.0 W/m·K (at 538°C / 1000°F)
Coefficient of Thermal Expansion 13.1 µm/m·°C (20–100°C)

Dimensions

Diameter (mm) Diameter (inches) Length (mm) Length (inches) Condition
12–25 0.47–0.98 1000–3000 39–118 Hot Rolled / Cold Drawn
26–50 1.02–1.97 1000–6000 39–236 Hot Rolled / Cold Drawn
51–100 2.01–3.94 1000–6000 39–236 Hot Rolled
101–200 3.98–7.87 1000–6000 39–236 Hot Rolled
201–300 7.91–11.81 1000–6000 39–236 Hot Rolled

Equivalent Grades

Standard Equivalent Grade
AISI / SAE 800HT
ASTM B407, B625
ASME SB407
EN / DIN 1.4876 / X10NiCrAlTi32-20
JIS SPN 10
ISO Nickel-Iron-Chromium Alloy 800HT

Weight Chart (Approx.)

Diameter (mm) Weight per Meter (kg/m) Diameter (inches) Weight per Foot (lbs/ft)
12 0.92 0.47 0.62
16 1.62 0.63 1.09
20 2.55 0.79 1.71
25 3.97 0.98 2.66
32 6.31 1.26 4.23
40 9.86 1.57 6.61
50 15.36 1.97 10.30
65 25.90 2.56 17.38
80 39.40 3.15 26.45
100 61.60 3.94 41.35
150 138.60 5.91 93.00
200 246.00 7.87 165.00
250 383.60 9.84 257.00
300 552.00 11.81 370.00

The applications of our Alloy 800HT round bars include oil & gas projects, chemical processing plants, desalination systems, shipbuilding, aerospace, automotive, and heavy engineering. With superior resistance to oxidation and stress corrosion cracking, our bars perform reliably in extreme environments. Whether it is for large-scale infrastructure projects in Mumbai or precision engineering in Germany and the USA, Shakti Forge India remains the first choice for industries that demand excellence.

As one of the most reliable Alloy 800HT Round Bars Manufacturer, Stockist and Exporter, Shakti Forge India continues to expand its presence in domestic and international markets. Our focus on quality, timely delivery, and customer satisfaction makes us a preferred partner for leading industries across the globe. For bulk requirements or customized solutions, Shakti Forge India ensures the highest level of product integrity and service excellence.

Frequently Asked Questions (FAQs)

Q:What is Alloy 800HT Round Bar?

Alloy 800HT Round Bar is a high-strength nickel-iron-chromium alloy designed for high-temperature applications with excellent resistance to oxidation, carburization, and thermal fatigue.

Q:What are the typical applications of Alloy 800HT Round Bars?

These bars are widely used in chemical processing equipment, petrochemical plants, heat exchangers, furnace components, turbine shafts, and nuclear reactors.

Q:What is the maximum service temperature of Alloy 800HT?

Alloy 800HT Round Bars can typically operate at temperatures up to 700°C (1290°F) while maintaining mechanical properties.

Q:What standards does Alloy 800HT conform to?

Alloy 800HT Round Bars conform to ASTM B407, ASTM B625, and ASME SB407 standards, among others.

Q:Can Alloy 800HT Round Bars be welded?

Yes, they can be welded using TIG, MIG, or resistance welding methods. Pre- and post-weld heat treatment is recommended for high-stress applications.

Q:What are the available sizes for Alloy 800HT Round Bars?

Diameter ranges from 12 mm to 300 mm (custom sizes available) with lengths up to 6 meters, in hot-rolled or cold-drawn conditions.

Cities we have supplied our products to

Mumbai, Delhi, Bengaluru(Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, Rajpipla, Veraval,Kovvur, Andra Pradesh,Karwar, Karnataka,Kosamba, Gujarat, Vishakapatnam, Shahad, Pondicherry, Kakkinada, Pradesh, Nagda, Madhya Pradesh,Harihar, Karnataka, Tuticorin, Tamilnadu, Trivandrum, KeralaKurnool, Rourkela, Hindupur, Orissa, Renukoot, Uttar Morbi, Kerala ,Himachal, Dehradun, Visakhapatnam ,Jamnagar, Kozhikode, Ludhiana,Latur, Nanded, Vijaywada, Alwar, Bareilly, Bikaner, Andheri, Marol, Taloja, Turbhe, TTC (Thane-Belapur), Pimpri-Chinchwad, Chakan, Talegaon, Ranjangaon, Jejuri, Baramati, Satpur, Ambad, Sinnar, Igatpuri, Shendra, Waluj, Chikalthana, Paithan, Hingna, Butibori, Kalmeshwar, Umred, Shiroli, Kagal, Gokul Shirgaon, Akkalkot, Chincholi, Lote-Parshuram, Dombivli, Ambernath, Mahad, Roha, Palghar, Tarapur (Boisar)

Cities we have supplied our products to

South Korea, Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen, France, Germany, Greece, Oman, Colombia, Portugal, Japan, Lithuania, Macau, Mongolia, Qatar, Ireland, Malaysia, Bangladesh, Russia, Iran, Jordan, Singapore, Bulgaria, Poland, Denmark, Nigeria, Gambia, Indonesia, Finland, Argentina, Chile, Spain, Peru, Kuwait, India, Saudi Arabia, Slovakia, Slovenia, Sweden, Switzerland, Bahrain, the Netherlands, United Kingdom, Mexico, Bulgaria, Spain, France, Germany, Colombia, Brazil, Saudi Arabia, Iraq, Iran, Sudan, Libya, Tanzania, Nigeria, New Zealand, Paris, Switzerland

Applications of Alloy 800HT Round Bars

  • Oil & Gas Industry – pipelines, offshore rigs, valves, and fittings
  • Chemical Processing Plants – heat exchangers, reactors, and storage vessels
  • Marine & Shipbuilding – propeller shafts, seawater systems, and pumps
  • Aerospace – jet engines, turbine blades, and structural components
  • Power Generation – nuclear plants, boilers, and steam generators
  • Automotive – exhaust systems, sensors, and performance parts
  • Pharmaceutical & Food Industry – equipment requiring hygiene and corrosion resistance
  • Construction & Infrastructure – high-strength fasteners, joints, and supports