ASTM B574 Hastelloy C4 Square Bar Flat Bar Hex Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Forged
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Polished
• Alloy: Alloy
• Model NO.: KM-20240425
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Standards: ASTM B574
• Materials: Hastelloy C4 Uns N106455
• Applications: Chemical Processing, Aerospace, Power Generation,
• Diameter: 3~600mm
• Packaging: in Wooden Boxes or Pallets
• Shape: Square Bar,Hexagonal Bar, Flat Bar,Rectangular Bar
• Transport Package: in Bundle
• Specification: 3~350mm
• Trademark: Kingmetal
• Origin: China
• HS Code: 7222110000
• Production Capacity: 500 Tons Per Month

Product Description

ASTM B574 B575 HASTELLOY C4 square bar flat bar hex bar

HASTELLOY C4 Bright Bars, HASTELLOY C4 Hex Bars, HASTELLOY C4 Black Bars, HASTELLOY C4 Flat Bars, HASTELLOY C4 Billet Bars, and HASTELLOY C4 Forged Bars are all available from us. Our HASTELLOY Alloy C4 Round Bars, also known as UNS N106455 Round Bars, are available to our valued customers in a variety of diameters, wall thicknesses, and sizes, both in standard and customised configurations, and at very competitive prices.

Standard: ASTM B574
Diameter: 3~600mm
Length: 500mm~12000mm

Hastelloy C4 Composition

Hastelloy C4 is a member of the Hastelloy family of alloys, a group of nickel-based alloys that are highly corrosion-resistant in harsh chemical environments. It has a chemical composition of 64% nickel, 16% chromium, 16% molybdenum, and 2% iron. Adding small amounts of tungsten and copper provides stability, strength and improved corrosion resistance.

Element	Content (%)
Chromium, Cr	14-18
Molybdenum, Mo	14-17
Iron, Fe	3 max
Cobalt, Co	2 max
Manganese, Mn	1 max
Titanium, Ti	0.7 max
Silicon, Si	0.08 max
Phosphorus, P	0.04 max
Sulfur, S	0.03 max
Carbon, C	0.015 max
Nickel, Ni	Remainder

Hastelloy C4 Mechanical Properties

One of the significant advantages of Hastelloy C4 is its excellent mechanical properties, which make it ideal for high-stress applications. Its tensile strength is approximately 125 ksi, with a yield strength of 52 ksi and an elongation capacity of 58%. Hastelloy C4 also has a high fracture toughness value and excellent fatigue strength.

Properties	Metric	Imperial
Tensile strength	738 MPa	107000 psi
Yield strength ( @ 0.2% offset)	492 MPa	71400 psi
Elastic modulus	211 GPa	30600 ksi
Elongation at break (in 50.8 mm)	42%	42%

Hastelloy C4 Physical Properties

Apart from mechanical strength, Hastelloy C4 also boasts impressive physical properties, such as a high melting point, density, and thermal conductivity. Its melting point is 1370°C, with a thickness of 8.64 g/cm3. Its thermal conductivity ranges from 8.1-11.7 W/mK. Moreover, the alloy's low thermal expansion coefficient is ideal for high-temperature applications.

Properties	Metric	Imperial
Density	8.64 g/cm³	0.312 lb/in³
Melting point	1427°C	2600°F

Hastelloy C4 Thermal Properties

Properties	Metric	Imperial
Thermal expansion co-efficient (@ 20°C/68°F)	10.8 µm/m°C	6 µin/in°F
Thermal conductivity (@ 23°C/73°F)	10.1 W/mK	70.1 BTU in/hr.ft².°F

Hastelloy C4 Equivalents

• ASTM B574
• ASTM B575
• ASTM B619
• ASTM B622
• ASTM B626
• DIN 2.4610

Hastelloy C4 Uses

Hastelloy C4 is used in various industries, including chemical processing, aerospace, power generation, petrochemical, pharmaceuticals, and marine applications. This alloy suits sulfuric acid, hydrochloric acid, and acetic acid applications. It is commonly used in chemical reactors, heat exchangers, furnace components, and catalyst support grids.

Hastelloy C4 Corrosion Resistance

Hastelloy C4 is a highly corrosion-resistant material, standing up well to several corrosive environments, including oxidizing and reducing acid environments. It has superior resistance to pitting, crevice corrosion, and stress cracking. In addition to its resistance to acid and highly corrosive environments, Hastelloy C4 also resists intergranular cracking in welding.

Hastelloy C4 Heat Treatment:

Hastelloy C4 requires careful heat treatment to achieve optimal mechanical properties. The alloy is annealed at 1025°C-1125°C followed by rapid cooling through water or air quenching. The material is then age-hardened by heating to 870°C- 980°C for one hour, followed by water or air quenching.

Hastelloy C4 Machining

Hastelloy C4 is classified as a difficult-to-machine alloy due to its high elasticity modulus and work hardening. Therefore, special care must be taken when machining Hastelloy C4. Carbide-cutting tools are recommended to minimize tool wear and prolong tool life. High-speed steel tools are not recommended since they wear quickly.

Hastelloy C4 Welding

Careful attention needs to be given when welding Hastelloy C4. The alloy can be readily welded, but the filler material selection is crucial to obtain optimal mechanical properties. TIG welding is the most common method of fusing Hastelloy C4 due to its low-heat input, allowing for successful welding without cracking. Moreover, post-welding heat treatment is required for Hastelloy C4 to reduce residual welding stress and restore mechanical properties.

Conclusion

Hastelloy C4 has become a top choice among industries requiring high-performance alloys due to its unique mechanical and physical properties, exceptional corrosion resistance, and versatility. We have learned how Hastelloy C4 stands out in various applications, from its composition to its mechanical and physical properties. Whether operating in the chemical processing, aerospace, or pharmaceutical industry, Hastelloy C4 offers excellent corrosion resistance to help your equipment last longer and perform better.