Silicon carbide form

PTFE single-tube plate

• Prior to installation, each heat exchange tube shall be tested at a pressure of 185 bar.
• The shell diameter of the heat exchanger ranges from DN50 to DN1500.
• The standard length of heat exchange tubes is 1,000 to 4,000 mm.
• The heat exchange tube diameters are 14 mm and 19 mm.
• Horizontal or vertical installation
• Applicable temperature range: -19°C to 100°C
• Applicable pressure range: -0.09 MPa to 0.3 MPa
• Complies with CE, ATEX, and FDA standards.

Steel-lined F4/steel-lined PFA tube sheet

• Prior to installation, each heat exchange tube shall be tested at a pressure of 185 bar.
• The shell diameter of the heat exchanger ranges from DN50 to DN1500.
• The standard length of heat exchange tubes is 1,000 to 4,000 mm.
• The heat exchange tube diameters are 14 mm and 19 mm.
• Horizontal or vertical installation
• The steel-lined F4 is suitable for temperatures ranging from -19°C to 120°C.
• Steel-lined PFA has a service temperature range of -19°C to 200°C.
• Applicable pressure range: -0.09 MPa to 0.6 MPa
• Complies with CE, ATEX, and FDA standards.

PTFE-lined metal double-tube sheet

• Prior to installation, each heat exchange tube shall be tested at a pressure of 185 bar.
• The shell diameter of the heat exchanger ranges from DN50 to DN1500.
• The standard length of heat exchange tubes is 1,000 to 4,000 mm.
• The heat exchange tube diameters are 14 mm and 19 mm.
• Horizontal or vertical installation
• Suitable temperature range: -19°C to 100°C
• Applicable pressure range: -0.09 MPa to 0.6 MPa
• Complies with CE, ATEX, and FDA standards.
• Double-pipe plate design

A separation chamber can be used to separate the process fluid from the working fluid, ensuring that the two fluids do not mix in the event of an O-ring leak.

Excellent properties of silicon carbide

Silicon carbide material is manufactured by pressureless sintering of submicron silicon carbide powders. The self‑bonding fine grains (<10 µm) formed during sintering enable the resulting silicon carbide ceramics to achieve a true density exceeding 95% of silicon carbide’s theoretical density. With its comprehensive superior properties—high thermal conductivity, exceptional hardness and strength, and broad corrosion resistance—silicon carbide is an ideal material for corrosion‑resistant heat‑exchanging equipment, serving as a superior alternative to conventional heat‑transfer materials such as metals, glass, enamel‑coated glass, graphite, and PTFE.

High hardness, high density, and low porosity

• Silicon carbide exhibits a hardness 50% greater than that of tungsten carbide, and its sintered products achieve a true density exceeding 95% of the theoretical value. Even under extreme temperatures and pressures, it maintains exceptional wear resistance and complete impermeability, thereby permitting media to flow at high velocities. Its superior hardness also ensures that it does not contaminate process fluids in high-purity industrial applications.

Excellent thermal conductivity

• The thermal conductivity of silicon carbide is nearly comparable to that of impregnated graphite, which is commonly used in chemical equipment, and far exceeds that of other materials. Its thermal conductivity is twice that of tantalum alloys, five times that of stainless steel, ten times that of Hastelloy, and fifteen times that of enameled glass.

Excellent thermal shock resistance

• Silicon carbide boasts exceptionally high thermal conductivity and a consistently low coefficient of thermal expansion. By minimizing intrinsic temperature gradients, it exhibits outstanding thermal shock resistance, enabling it to withstand rapid thermal cycling—both heating and cooling—far better than other materials.

Exceptional high-temperature stability

• Silicon carbide can operate under high-temperature conditions that other materials cannot withstand (maximum service temperature: 1,700°C in air and 1,950°C in an inert gas), and it remains dimensionally stable at elevated temperatures.

Low total cost of ownership

• Its overall cost performance surpasses that of graphite and metal heat exchangers, and it offers a distinct advantage—particularly when replacing expensive precious-metal heat exchangers such as tantalum, zirconium, and Hastelloy—which are costly, have long lead times, and exhibit limited service life under conditions involving mixed acids or complex operating environments.

Comparison of Life-Cycle Operating Costs for Silicon Carbide, Graphite, and Metal Heat Exchangers

Outstanding corrosion resistance

• It exhibits exceptionally high resistance to corrosion, oxidation, and impact.
• It is resistant to high concentrations of sulfuric acid, nitric acid, phosphoric acid, mixed acids, strong alkalis, oxidizing agents, and more.
• It is the only ceramic material that can withstand hydrofluoric acid corrosion.
• It boasts an excellent service life.
• It boasts high strength, with each silicon carbide tube having undergone a 10 MPaG hydrostatic pressure test.

Health, Safety, and Environmental Protection

• It does not contaminate the process medium even under highly corrosive operating conditions (under severe corrosion, extreme high‑temperature, and high‑pressure conditions, it still exhibits exceptional wear resistance and impermeability, ensuring material purity and preventing contamination).
• It can meet the stringent standards of the pharmaceutical and food industries.

Structural features

Technical Requirements and Standards

• The standard length of heat exchange tubes is 1,000 to 4,000 mm.
• The heat exchange tubes are available in sizes 14×1.5 mm and 19×2.25 mm.
• The shell diameter of the heat exchanger ranges from DN50 to DN1500.
• Horizontal or vertical installation

Super‑reinforced (steel‑lined PFA)

Comparison between Silicon Carbide Heat Exchangers and Conventional Heat Exchangers

Application Cases for Certain Operating Conditions

Model Meaning

Specification Model

Model of F14 silicon carbide heat exchanger

Φ19 silicon carbide heat exchanger model

Customized design

Ametech’s expert technical and engineering team, combined with years of experience in the R&D and manufacturing of heat exchangers and pressure vessels, is capable of providing customized designs tailored to customer requirements.