Hastelloy C276 Raised Face PN16 SO Flange

Hastelloy C276 Raised Face PN16 Slip-On Flange is ideal for extreme corrosion and high-temperature environments

Hastelloy C276 Raised Face PN16 SO Flange

SSM offers the Hastelloy C276 Raised Face PN16 Slip-On (SO) Flange, made from Hastelloy C276 alloy, featuring a raised face (RF) design and compliant with PN16 pressure rating standards.

Hastelloy C276 is a nickel-molybdenum-chromium alloy known for its exceptional corrosion resistance, especially in chemical and marine environments.

The Slip-On flange refers to a type of flange where the pipe can be inserted into the flange bore and welded, making it suitable for medium- and low-pressure piping systems.

Chemical Composition of Hastelloy C276

Element

Nickel (Ni)

Chromium (Cr)

Molybdenum (Mo)

Iron (Fe)

Tungsten (W)

Cobalt (Co)

Manganese (Mn)

Vanadium (V)

Silicon (Si)

Carbon (C)

Phosphorus (P)

Sulfur (S)

Hastelloy C276 (%)

Balance (approx. 57%)

14.5-16.5

15-17

4-7

3-4.5

≤ 2.5

≤ 1

≤ 0.35

≤ 0.08

≤ 0.01

–

≤ 0.03

Mechanical Properties of Hastelloy C276

Property	Tensile Strength	Yield Strength	Elongation
Hastelloy C276	690 MPa	283 MPa	40%

Physical Properties of Hastelloy C276

Property	Density	Melting Point	Elastic Modulus	Poisson’s Ratio	Specific Heat	Thermal Conductivity	Thermal Expansion Coefficient
Hastelloy C276	8.89 g/cm³	1370-1425°C	205 GPa	0.32	427 J/(kg·K) (at 300K)	10.2 W/(m·K) (at 300K)	11.0 µm/(m·K) (20-1000°C)

ASTM B564 applies to forged flanges, fittings, valves, and other components made from nickel alloys used in high-temperature and corrosive environments. Hastelloy C276, being a nickel-based alloy, must meet the requirements of ASTM B564 for flange production.

EN 1092-1 is the European flange standard. The PN16 pressure rating corresponds to this standard, which specifies the dimensions, pressure ratings, materials, and manufacturing requirements for different types of flanges, including Slip-On flanges.

PN16 indicates that the flange can withstand a pressure of 16 bar at room temperature, based on the EN 1092-1 standard’s pressure classification system.

Advantages of Hastelloy C276 Raised Face PN16 SO Flange

Exceptional Corrosion Resistance

Hastelloy C276 is highly resistant to various corrosive environments, including both oxidizing and reducing acids, as well as chlorides.

Versatility

The Raised Face and Slip-On design makes the flange easy to install and suitable for medium-pressure piping systems, with enhanced sealing performance.

Good Weldability

Hastelloy C276 is easy to weld and does not sensitize easily, reducing the risk of corrosion in the weld area.

Resistance to Stress Corrosion Cracking

It is particularly suitable for chloride and hydrogen sulfide environments, preventing stress corrosion cracking.

C276 Flanges Applications

Chemical Industry: Hastelloy C276 is highly resistant to strong acids and alkalis, making it ideal for piping systems handling corrosive media such as sulfuric acid, hydrochloric acid, and phosphoric acid.
Oil & Gas: This flange is suitable for pipelines in harsh environments involving sour gas, hydrogen, and other challenging conditions in oil and gas extraction and transportation.
Marine Engineering: Due to its excellent resistance to seawater and salt spray, it’s widely used in offshore platforms, subsea pipelines, and related equipment.
Power & Energy Sector: Used in steam piping and cooling water systems of power plants and nuclear power stations, it can withstand high temperatures, pressures, and corrosive media.

Summary

Hastelloy C276 Raised Face PN16 Slip-On Flange is ideal for extreme corrosion and high-temperature environments, but its high cost and processing complexity are factors to consider.

One-Stop Flange Provider for All Your Needs

SSM has significant product advantages in manufacturing Hastelloy C276 Raised Face PN16 SO Flange. Whether it’s quality or price, we will meet your needs.

Hastelloy C276 Raised Face PN16 SO Flange