GH3536 (equivalent to UNS N06002, Hastelloy X, W.Nr.2.4665) is a nickel‑chromium‑iron‑molybdenum solid‑solution strengthened superalloy designed for high‑temperature service up to 900 °C long‑term and 1080 °C short‑term. It features excellent oxidation resistance, moderate creep strength, good formability, and weldability, widely used in aero‑engines, industrial gas turbines, petrochemical furnaces, and high‑temperature structural components.

मुख्य विशेषताएँ

• Outstanding high‑temperature oxidation resistance up to 1200 °C.
• Good medium‑to‑high creep and stress‑rupture strength below 900 °C.
• Excellent cold/hot workability and weldability; no post‑weld heat treatment required for most applications.
• Stable microstructure and good resistance to carburization and sulfidation in harsh industrial atmospheres.
• Good machinability in the solution‑annealed condition.

Production & Product Forms

• Manufacturing processes: vacuum induction melting + electroslag remelting; hot forging, hot rolling, centerless turning, peeling, polishing.
• Product condition: mainly solution‑treated (1090–1120 °C, air cooling).
• Surface: black, peeled, turned, polished; customized upon request.
• End types: plain ends, machined ends, threaded as required.

Chemical Composition (wt%, GB/T 14992)

तत्त्व	GH3536	Main Function
Nickel (Ni)	संतुलन	Matrix, ensures hightemperature stability
Chromium (Cr)	20.5–23.0	Oxidation and corrosion resistance
लोहा (Fe)	17.0–20.0	Improves workability, cost optimization
मोलिब्डेनम (Mo)	8.0–10.0	Solidsolution strengthening, creep resistance
Tungsten (W)	0.2–1.0	Auxiliary strengthening
Cobalt (Co)	≤2.50	Microalloying
कार्बन (सी)	0.05–0.15	Carbide strengthening
मैंगनीज (Mn)	≤1.00	Deoxidation, hot workability
सिलिकॉन (Si)	≤1.00	Deoxidation, oxidation resistance
फॉस्फोरस (P)	≤0.015	Impurity control
गंधक (S)	≤0.015	Impurity control
Al+Ti	≤0.50	Avoid harmful phases

आयामी विनिर्देश और सहनशीलताएँ

पैरामीटर	Value	सहिष्णुता
Diameter (d)	Φ8–Φ350 mm	h9/h11 or customized
लंबाई	1000–6000 mm	Fixed length or random
सीधापन	≤3 mm/m	Per standard
Ovality	≤1% of nominal diameter	Per standard

Mechanical Properties (Room Temperature, Solution Treated)

संपत्ति	Min. Value	Unit
तनन सामर्थ्य	655	MPa
Yield Strength (0.2% offset)	310	MPa
लम्बाई में वृद्धि	30	%
Hardness	≤HRB 90 / HB ≤240	—

लागू मानक

• Chinese: GB/T 14992, HB 5497, GJB 3317
• American: ASTM B637, AMS 5662/5663, UNS N06002
• European: W.Nr. 2.4665, NiCr22FeMo

Typical Applications

• Aerospace: combustion chambers, afterburners, flame holders, and hot‑section components in aero‑engines.
• Energy & power: industrial gas turbine parts, boiler tubes, heat exchanger tubes.
• Petrochemical: cracking tubes, radiant tubes, high‑temperature reactors, and furnace rolls.
• Industrial furnaces: muffle tubes, supporting rolls, grid plates, and high‑temperature fasteners.