Stainless Steel 317 Fasteners: A Comprehensive Overview
At ASC LLP, we pride ourselves on being a leading supplier of high-quality stainless steel fasteners, with a particular focus on the versatile and durable 317 stainless steel fasteners. This comprehensive guide will delve into what 317 stainless steel fasteners are, their properties, advantages, and applications, equipping you with the essential knowledge to make informed decisions for your projects.
What is 317 Stainless Steel Fasteners?
317 stainless steel fasteners are made from an alloy that primarily consists of iron, chromium, and nickel, with molybdenum added to enhance corrosion resistance. This grade of stainless steel is classified as austenitic, which means it has a face-centered cubic crystal structure that provides excellent mechanical properties and resistance to corrosion.
The addition of molybdenum to the alloy composition improves its performance in environments containing chlorides, making it particularly suitable for marine applications and industries where corrosion resistance is paramount.
Properties of 317 Stainless Steel Fasteners
Understanding the properties of 317 SS fasteners is crucial for selecting the right fasteners for your needs. Here are some of the key properties:
- Corrosion Resistance: 317 SS fasteners offer superior resistance to corrosion compared to standard stainless steel grades. The higher molybdenum content provides enhanced protection against pitting and crevice corrosion, especially in environments exposed to chlorides and sulfuric acid.
- Strength and Durability: These fasteners exhibit excellent mechanical strength, allowing them to withstand high-stress applications. They are designed to endure harsh conditions without compromising their structural integrity.
- Temperature Resistance: 317 SS fasteners maintain their mechanical properties in high-temperature environments, making them suitable for applications requiring heat resistance. They can operate effectively at temperatures up to 870°C (1600°F) in intermittent service.
- Ease of Fabrication: Despite their strength, 317 SS fasteners are relatively easy to fabricate and machine. This property allows for versatile manufacturing processes, including cold heading, threading, and welding.
- Non-Magnetic: Unlike some other stainless steel grades, 317 stainless steel is non-magnetic, which can be advantageous in applications where magnetic interference is a concern.
Advantages of Using 317 Stainless Steel Fasteners
Incorporating 317 stainless steel fasteners into your projects offers several advantages:
- Versatility: The properties of 317 stainless steel fasteners make them suitable for a wide range of applications, from construction and infrastructure to automotive and aerospace industries.
- Long Lifespan: With their excellent resistance to corrosion and wear, 317 SS fasteners have a longer lifespan compared to other fasteners, reducing the need for frequent replacements and maintenance.
- Cost-Effectiveness: Although 317 SS fasteners may have a higher initial cost than lower-grade options, their longevity, and durability can lead to significant savings in the long run by minimizing replacement and maintenance costs.
- Aesthetic Appeal: The bright, shiny surface of stainless steel fasteners contributes to the overall aesthetic appeal of finished products. They are often used in visible applications where appearance matters.
- Environmentally Friendly: Stainless steel is 100% recyclable, making 317 SS fasteners an environmentally friendly choice for sustainable construction practices.
Schedule and Size Chart
| Fastener Type | Diameter (mm) | Length (mm) | Thread Type | Standard |
| Bolt | 6, 8, 10, 12, 16 | 20, 30, 40, 50 | Metric (ISO) | ASTM A193 |
| Nut | 6, 8, 10, 12, 16 | – | Metric (ISO) | ASTM A194 |
| Screw | 4, 5, 6, 8, 10 | 20, 30, 40, 50 | Metric (ISO) | ASTM A307 |
| Washer | 4, 6, 8, 10, 12 | – | Flat | ASTM F844 |
Mechanical Properties Chart
| Property | Value |
| Yield Strength (MPa) | 290 – 310 |
| Ultimate Tensile Strength (MPa) | 620 – 690 |
| Elongation (%) | 40 |
| Hardness (Rockwell B) | 85 – 95 |
| Modulus of Elasticity (GPa) | 200 – 210 |
| Fatigue Strength (MPa) | 140 |
Specifications Chart
| Specification | Details |
| Standard | ASTM A193 / A194 / A307 |
| Grade | 317 |
| Finish | Passivated |
| Coating | None (optional) |
| Diameter Tolerance | ±0.05 mm |
| Length Tolerance | ±1.0 mm |
Chemical Composition Chart
| Element | Composition (%) |
| Chromium (Cr) | 18 – 20 |
| Nickel (Ni) | 11 – 14 |
| Molybdenum (Mo) | 3 – 4 |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
Physical Properties Chart
| Property | Value |
| Density (g/cm³) | 7.99 |
| Melting Point (°C) | 1400 – 1450 |
| Thermal Conductivity (W/m·K) | 16.3 |
| Specific Heat Capacity (J/kg·K) | 500 |
| Coefficient of Thermal Expansion (×10⁻⁶/K) | 16.0 |
Application Chart
| Application | Details |
| Chemical Processing Equipment | Used in tanks, pipes, and valves to resist corrosion. |
| Marine Industry | Ideal for boat fittings and marine hardware. |
| Oil and Gas | Suitable for downhole and pipeline applications. |
| Food Processing | Ensures compliance with hygiene standards. |
| Construction | Used in structural applications requiring durability. |
Choosing the Right Stainless Steel 317 Fasteners
When selecting stainless steel 317 fasteners, consider the following factors:
- Application Requirements: Understand the specific needs of your project, including environmental conditions, load requirements, and compliance standards.
- Size and Dimensions: Ensure the fasteners are available in the required sizes and dimensions to fit your application.
- Finish and Coating: Select the appropriate finish or coating for your fasteners based on aesthetic preferences and additional corrosion protection.
- Supplier Reputation: Choose a reputable supplier like ASC LLP, known for high-quality products and exceptional customer service.
317 stainless steel fasteners are a superior choice for various industrial applications, thanks to their excellent corrosion resistance, mechanical strength, and durability. At ASC LLP, we are committed to providing high-quality stainless steel fasteners tailored to meet the diverse needs of our customers. With our extensive inventory and expert knowledge, we are your trusted partner for all your fastener requirements.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality Stainless Steel 317 Fasteners. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
