Stainless Steel 317 / 317L Shims in India
Engineered for industries requiring precise alignment and spacing, our Stainless Steel 317/317L shims in India provide exceptional corrosion resistance in the toughest environments. As a premier manufacturer in India, Unimix Metal delivers high-accuracy solutions featuring controlled thickness tolerances and smooth surface finishes for reliable industrial performance.
What is SS 317 / 317L Stainless Steel Shim?
These precision-cut strips and sheets serve as essential components for leveling, gap adjustment, and critical assembly alignment. By incorporating a higher molybdenum content than standard 316 grade, SS 317 offers superior protection against pitting, particularly in marine and chemical settings. Furthermore, the 317L low-carbon variant ensures excellent weldability while significantly reducing the risk of carbide precipitation during fabrication.
Key Features
- Excellent resistance to pitting and crevice corrosion
- High strength and toughness at elevated temperatures
- Superior performance in chemical processing plant.
- Good weldability (especially SS 317L)
- Precise thickness tolerance and smooth surface finish
- Long service life with minimal maintenance
Why Choose 317 Shims for Precision Machining?
Choosing SS 317 allows manufacturers to boost component strength through cold working without sacrificing essential ductility. For those requiring faster processing, sulfur-enhanced versions improve machinability by aiding chip formation and minimizing tool wear.
These shims are frequently selected for aerospace and automotive applications due to an impressive strength-to-weight ratio that ensures lightweight yet durable performance. Additionally, their exceptional formability allows for intricate stamping and shaping into custom designs without the risk of cracking.
Manufacturing & Quality Assurance
At Unimix Metal, our manufacturing approach centers on using certified raw materials and strictly controlled production workflows. To guarantee excellence, every batch undergoes a comprehensive inspection suite:
Material Verification: PMI (Positive Material Identification) and detailed chemical analysis.
Mechanical Integrity: Testing for flattening, mechanical strength, and intergranular corrosion (IGC).
Traceability: All shipments include Mill Test Certificates (MTC) per EN 10204 3.1, ensuring full compliance for international export and critical industrial use.
Equivalent Grades of SS 317 / 317L Shims
| Standard | UNS Designation | Werkstoff No. (W.Nr) / DIN | JIS (Japan) | EN / European Standard |
| SS 317 | S31700 | 1.4449 | SUS 317 | X5CrNiMo17-13-3 |
| SS 317L | S31703 | 1.4438 | SUS 317L | X2CrNiMo18-15-4 |
Chemical Composition of SS 317/317L Shims
| Property | Stainless Steel 317 | Stainless Steel 317L |
| Tensile Strength (min) | 515 MPa / 75,000 psi | 515 MPa / 75,000 psi |
| Yield Strength (0.2% Offset) | 205 MPa / 30,000 psi | 205 MPa / 30,000 psi |
| Elongation (% in 50mm) | 35% | 35% – 40% |
| Hardness (Rockwell B) | 95 HRB max | 95 HRB max |
| Hardness (Brinell) | 217 HB max | 217 HB max |
Mechanical Properties of SS 317 / 317L Shims
| Element | Grade 317 (UNS S31700) | Grade 317L (UNS S31703) |
| Chromium (Cr) | 18.0 – 20.0% | 18.0 – 20.0% |
| Nickel (Ni) | 11.0 – 15.0% | 11.0 – 15.0% |
| Molybdenum (Mo) | 3.0 – 4.0% | 3.0 – 4.0% |
| Carbon (C) | 0.08% max | 0.03% max |
| Manganese (Mn) | 2.00% max | 2.00% max |
| Silicon (Si) | 0.75% max | 0.75% max |
| Phosphorus (P) | 0.045% max | 0.045% max |
| Sulfur (S) | 0.030% max | 0.030% max |
| Nitrogen (N) | 0.10% max | 0.10% max |
| Iron (Fe) | Balance | Balance |
Dimensional Specifications & Stock Range
| Specification | Details |
| Thickness Range | 0.01 mm to 5.0 mm (Custom thickness available upon request) |
| Width | 10 mm to 1000 mm |
| Length | 100 mm to 3000 mm / Custom Cut-to-Length |
| Standard Specifications | ASTM A240 / ASME SA240 |
| Hardness | Soft, Half-Hard, Full-Hard, Spring Hard |
| Finish | 2B, BA, No.4, Mirror, Matte Finish |
| Forms | Shim Rolls, Shim Sheets, Pre-cut Shims, Slit Strips |
Applications of Stainless Steel 317/317L Shims
- Chemical Processing Plants: Used for alignment in systems handling highly corrosive acids and chemicals.
Heat Exchangers & Pressure Vessels: Provides precise spacing and leveling for high-pressure components.
Marine & Offshore Equipment: Ideal for salt-water environments where standard grades might fail due to corrosion.
Aerospace & Automotive Assemblies: Utilized for precision machining and components requiring a high strength-to-weight ratio.
Precision Machinery Alignment: Ensures accurate leveling of industrial motors, pumps, and rotating equipment.
Oil & Gas and Power Generation: Critical for maintaining the integrity of pipelines and power plant machinery.
Manufacturing & Quality Approach
Our Stainless Steel 317/317L shims are manufactured using certified raw materials and controlled production processes. Each batch undergoes strict quality inspection including PMI (Positive Material Identification), chemical analysis, mechanical testing, flattening test, intergranular corrosion (IGC) testing, and dimensional inspection.
All products are supplied with Mill Test Certificates (MTC) as per EN 10204 3.1, ensuring full material traceability and compliance for critical industrial and export applications.
Custom Cutting & Value-Added Services
- Laser cutting.
- Waterjet cutting
- Precision slitting
- Edge deburring for burr-free shims
- Custom shim packs as per drawings
Packaging & Quality Assurance
Each SS 317 / 317L stainless steel shim is packed with moisture-resistant material to prevent surface damage during transit. We conduct rigorous tests including chemical analysis, mechanical testing, dimensional inspection, and surface finish checks to ensure flawless quality.
Global Supply & Export Capability
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