Haynes 230: Complete Properties & Application Guide

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Overview

Haynes 230 (UNS N06230 / W.Nr. 2.4733) is a nickel-chromium-tungsten-molybdenum alloy with excellent high-temperature strength and oxidation resistance up to 1149°C. The tungsten addition provides solid-solution strengthening while chromium and lanthanum enhance oxidation resistance.

Chemical Composition

The chemical composition of Haynes 230 is carefully controlled to achieve its unique combination of properties and performance characteristics.

Element	Min %	Max %
Nickel (Ni)	Balance	Balance
Chromium (Cr)	20.0	24.0
Tungsten (W)	13.0	15.0
Molybdenum (Mo)	1.0	3.0
Cobalt (Co)	—	5.0
Iron (Fe)	—	3.0
Carbon (C)	0.05	0.15
Lanthanum (La)	0.005	0.05

Mechanical Properties at Room Temperature

The mechanical properties of Haynes 230 vary depending on product form and heat treatment condition. The data below represents typical values for solution-annealed material.

Property	Value
Tensile Strength	860 MPa
Yield Strength (0.2% offset)	390 MPa
Elongation in 2 inches	48%
Density	8.97 g/cm3
Melting Point	1370 °C
Max Service Temperature	1149 °C

Corrosion Resistance

Outstanding oxidation resistance up to 1149°C, superior to many competing alloys. Excellent resistance to nitridation and carburization. Good resistance to molten salts. The lanthanum addition improves scale adhesion and spalling resistance under thermal cycling.

Applications

The unique combination of properties makes Haynes 230 suitable for a wide range of demanding applications:

• Gas Turbines: Combustion chambers, liners, and transition ducts.
• Industrial Furnaces: High-temperature furnace components and fixtures.
• Heat Exchangers: High-temperature heat exchanger tubing.
• Nuclear: Components for very high-temperature gas-cooled reactors.
• Chemical Processing: Catalyst support grids and high-temperature reaction vessels.

Available Product Forms

Hangbo Alloy Group manufactures and supplies Haynes 230 in the following product forms, conforming to ASTM, AMS, and ASME specifications:

• Round Bars: Diameters from 6 mm to 300 mm, hot-finished or cold-drawn, solution annealed.
• Seamless Tubes & Pipes: Sizes from 6 mm OD to 219 mm OD, various wall thicknesses.
• Plates & Sheets: Thicknesses from 0.5 mm to 50 mm, hot-rolled or cold-rolled.
• Forgings: Custom flanges, rings, discs, and complex shapes per customer drawing.
• Welding Wire: Diameters 0.8 mm to 5.0 mm, precision-wound coils and spools.

Related Standards

Standard	Description
ASTM B435	Plate, Sheet, and Strip
ASTM B572	Bar and Rod
ASTM B619	Welded Pipe
ASTM B622	Seamless Pipe
ASTM B366	Fittings
AMS 5878	Sheet and Strip

Contact Us for Haynes 230

Hangbo Alloy Group maintains extensive inventory of Haynes 230 in all standard product forms. We can provide mill test certificates, third-party inspection reports (SGS, TUV), and custom processing services.

For quotations, material certifications, or technical consultation, contact our sales team or call +86-136-1165-6360. We typically respond within 10 minutes.