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347 Stainless Steel Shims are designed for high-temperature environments where excellent corrosion and oxidation resistance are required. These shims are stabilized with columbium, which helps prevent carbide precipitation during welding or prolonged heating. They maintain superior strength and toughness even in temperatures up to 870°C. Due to their resistance to intergranular corrosion, 347 stainless steel shims are widely used in applications involving continuous heating and cooling. They are an ideal choice for the aerospace, power generation, and petrochemical industries. The material offers durability, stability, and long-lasting performance under harsh conditions.
One of the most notable features of 347 Stainless Steel Shims is their outstanding resistance to scaling and creep strength. These properties make them suitable for use in furnace parts, exhaust systems, and heat exchangers. The alloy’s balanced composition ensures that it can withstand exposure to corrosive environments containing sulfur gases and oxidizing agents. Additionally, the presence of niobium stabilizes the material, preventing sensitization and maintaining structural integrity. These shims are also resistant to chloride stress cracking and atmospheric corrosion, ensuring dependable operation. Their excellent fabrication characteristics allow easy cutting, welding, and forming for precision engineering.
347 Stainless Steel Shims are often preferred over 304 or 321 grades when superior temperature resistance is required. The added niobium content provides better protection against intergranular attack after welding or exposure to high temperatures. These shims can handle repeated thermal cycling without losing their mechanical strength or developing cracks. Industries such as chemical processing, food production, and pharmaceuticals use them in critical machinery assemblies. The material’s high chromium and nickel content also ensures superior corrosion resistance in various acidic and oxidizing environments. They help maintain precise alignment and spacing in machine components while offering structural support.
In terms of mechanical performance, 347 Stainless Steel Shims provide excellent tensile and yield strength. Their hardness and toughness are retained even at elevated temperatures, making them suitable for demanding applications. These shims are available in various thicknesses and dimensions to meet specific tolerance requirements. They can be customized for use in pumps, valves, turbines, and flanges where tight clearances are essential. Moreover, their non-magnetic nature in the annealed condition adds to their versatility in precision instruments. The alloy’s workability allows for easy machining and polishing, ensuring smooth surface finishes for high-performance setups.
Fabrication and welding of 347 Stainless Steel Shims are straightforward, as they exhibit excellent weldability without the need for post-weld heat treatment. The niobium content prevents carbide formation, ensuring that the weld areas remain corrosion-resistant. Common fabrication techniques such as stamping, cutting, and punching can be applied with minimal tool wear. The material responds well to both cold and hot working processes, depending on the application. After fabrication, annealing can be performed to restore optimal mechanical properties. These shims are often utilized in situations where maintaining consistent tolerances and thermal stability is critical.
Applications of 347 Stainless Steel Shims span across numerous industries requiring high-temperature and corrosion-resistant materials. They are used in jet engine components, boiler casings, heat treatment fixtures, and expansion joints. Their stability under mechanical stress makes them reliable for long-term use in critical systems. They are also suitable for cryogenic applications due to their excellent low-temperature toughness. The material’s ability to resist oxidation and carburization extends its lifespan, reducing maintenance costs. Engineers and designers favor these shims for their precise thickness control, ensuring uniform spacing and secure fittings in assemblies.
Overall, 347 Stainless Steel Shims offer a superior balance of heat resistance, strength, and corrosion protection. Their unique stabilization with niobium enhances their performance in both oxidizing and reducing environments. These shims contribute to improved machine reliability, precision, and efficiency in complex assemblies. Their adaptability to diverse industrial needs makes them an essential component for long-term service applications. Whether in aerospace, automotive, or energy sectors, they maintain performance under extreme conditions. With proper selection and maintenance, 347 stainless steel shims ensure consistent, dependable operation in challenging environments.
Specification Table
| Property | Specification |
|---|---|
| Grade | 347 |
| Type | Stainless Steel Shim |
| Standard | AISI / ASTM / DIN / JIS |
| Finish | Polished / Mill Finish |
| Thickness | 0.05 mm – 6.0 mm |
| Width | 5 mm – 1000 mm |
| Length | Custom / Standard Sheets |
| Form | Sheet / Strip |
| Corrosion Resistance | Excellent |
| Applications | Industrial, Automotive, Construction, Aerospace |
Chemical Composition (Typical ranges for SSGrade)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.0 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.03 max |
| Silicon (Si) | 1.0 max |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 13.0 |
| Niobium (Nb) | 10 × C min (approx. 0.5) |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Ultimate Tensile Strength (MPa) | 515 – 760 |
| Yield Strength (MPa) | 205 – 310 |
| Elongation (%) | 40 min |
| Hardness (Brinell HB) | 150 max |
| Modulus of Elasticity (GPa) | 193 |
| Density (g/cm³) | 7.9 |
| Melting Point (°C) | 1425 – 1510 |
| Thermal Conductivity (W/m·K) | 16.2 |
| Specific Heat Capacity (J/kg·K) | 500 |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| AISI / ASTM | 347 |
| EN / DIN | X6CrNiNb17-12 |
| JIS | SUH 347 |
| BS | 304Nb |
| AFNOR | Z7CN18-12 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Thickness (mm) | Width (mm) | Length (mm) | Weight (kg/m²) |
|---|---|---|---|
| 0.05 | 100 | 1000 | 0.395 |
| 0.1 | 100 | 1000 | 0.79 |
| 0.2 | 100 | 1000 | 1.58 |
| 0.5 | 100 | 1000 | 3.95 |
| 1.0 | 100 | 1000 | 7.9 |
| 2.0 | 100 | 1000 | 15.8 |
| 3.0 | 100 | 1000 | 23.7 |
| 6.0 | 100 | 1000 | 47.4 |
Types Of 347 Stainless Steel Shimss and Tubes
Stainless Steel Shims
Monel 400 K400 shims
Hastelloy shims
Inconel 600 shims
Super Duplex shims
Duplex shims
Monel K500 shims
Nickel Alloy shims
Frequently Asked Questions (FAQ)
What are 347 Stainless Steel Shims?
347 Stainless Steel Shims are precision-engineered sheets or strips made from AISI 347 stainless steel, known for excellent corrosion resistance, high-temperature strength, and durability. They are used to adjust spacing, alignment, or tolerance in machinery and equipment.
What are the typical applications of 347 Stainless Steel Shims?
They are widely used in industrial machinery, automotive components, aerospace, construction, and heavy equipment to ensure precise alignment and spacing.
What sizes and thicknesses are available?
347 Stainless Steel Shims are available in thicknesses ranging from 0.05 mm to 6 mm and can be custom-cut in widths and lengths according to requirements.
How resistant are they to corrosion?
347 Stainless Steel Shims offer excellent resistance to oxidation and corrosion, making them suitable for use in harsh and high-temperature environments.
Can 347 Stainless Steel Shims be cut or machined?
Yes, they can be cut, machined, or formed using standard metalworking techniques without compromising their strength or performance.
Stainless Steel Shims Supplier
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