Stainless Steel 317L Fasteners – High-Performance Solutions from ASC LLP
When it comes to industrial applications that demand durability, strength, and corrosion resistance, stainless steel fasteners stand out as an indispensable solution. At ASC LLP, we provide top-quality 317L stainless steel fasteners, known for their excellent performance in highly corrosive environments. In this guide, we will explore what 317L stainless steel fasteners are, their key properties, and the advantages they offer across various industries.
What are 317L Stainless Steel Fasteners?
317L stainless steel fasteners are made from a low-carbon version of the 317 stainless steel alloy, which primarily consists of chromium, nickel, and molybdenum. The “L” in 317L stands for low carbon, meaning it has a reduced carbon content compared to the standard 317 grade. This makes the fasteners highly resistant to intergranular corrosion, especially after welding processes.
Stainless steel 317L fasteners are widely used in industries like chemical processing, petrochemicals, oil and gas, and marine engineering. They are ideal for environments exposed to harsh chemicals, high temperatures, and chloride-rich conditions.
317L Stainless Steel Fasteners Properties
317L stainless steel fasteners possess a combination of properties that make them suitable for a wide range of industrial applications. Below are the most significant 317L stainless steel fastener properties:
- Superior Corrosion Resistance: One of the standout features of 317L stainless steel fasteners is their exceptional corrosion resistance, particularly in environments where exposure to chemicals or chloride is a major concern. The addition of molybdenum significantly enhances their resistance to pitting and crevice corrosion, especially in marine and acidic conditions.
- Low Carbon Content: The low carbon content in stainless steel fasteners 317L ensures minimal carbide precipitation during welding, making these fasteners resistant to intergranular corrosion. This is a critical property for applications that involve welding and post-weld heat treatment.
- High Tensile Strength: 317L stainless steel fasteners are known for their excellent tensile strength, making them highly durable in demanding environments. They can withstand high levels of stress and pressure, offering a reliable solution for heavy-duty applications.
- Temperature Resistance: These fasteners exhibit outstanding performance in both high and low temperatures, retaining their mechanical properties even in extreme conditions. Stainless steel 317L fasteners are widely used in industries where temperatures fluctuate significantly.
- Enhanced Pitting Resistance: Thanks to the high levels of molybdenum, 317L stainless steel fasteners offer superior resistance to pitting in chloride environments. This makes them suitable for use in seawater applications, chemical plants, and processing industries that deal with halide chemicals.
- Non-Magnetic: The non-magnetic nature of stainless steel fasteners 317L is another important property, particularly in applications where magnetism could interfere with equipment performance.
317L Stainless Steel Fasteners Advantages
Now that we’ve covered the properties, let’s dive into the various 317L stainless steel fasteners advantages that make them a preferred choice for numerous industries.
- Excellent Durability: The high tensile strength and corrosion resistance of 317L stainless steel fasteners mean they can be used for long periods without the risk of rusting, corrosion, or wear. This results in lower maintenance costs and fewer replacements over time.
- Ideal for Harsh Environments: The superior resistance to acids, chlorides, and harsh chemicals makes these fasteners ideal for industries such as chemical processing, marine engineering, and petrochemicals. Their enhanced pitting and crevice corrosion resistance ensures they remain functional even in the most demanding conditions.
- Reduced Carbon Content for Better Weldability: One of the primary benefits of 317L stainless steel fasteners is their low carbon content. This improves their weldability without compromising their corrosion resistance, making them suitable for applications that require welding and heat treatment.
- Temperature Versatility: Whether in high-temperature or cryogenic environments, stainless steel fasteners 317L perform reliably. This versatility in temperature performance makes them the go-to fasteners in industries such as aerospace, power generation, and manufacturing.
- Cost-Effective: While stainless steel fasteners may have a higher upfront cost compared to standard steel fasteners, the longevity, reliability, and minimal maintenance of 317L stainless steel fasteners make them a cost-effective choice in the long run.
- Eco-Friendly: Stainless steel, including 317L stainless steel, is 100% recyclable, making these fasteners an environmentally friendly option. They are often made from recycled materials, and at the end of their lifecycle, they can be fully recycled, reducing their environmental impact.
Schedule and Size Chart
| Fastener Type | Diameter (mm) | Length (mm) | Thread Pitch (mm) |
| Hex Bolts | 6 – 100 | 12 – 300 | 1.0 – 4.0 |
| Hex Nuts | 6 – 100 | – | 1.0 – 4.0 |
| Socket Head Cap Screws | 3 – 36 | 6 – 250 | 0.5 – 2.5 |
| Washers (Flat/Spring) | 5 – 50 (ID) | 0.5 – 5 (thickness) | – |
| Stud Bolts | 6 – 100 | 25 – 500 | 1.0 – 4.0 |
| Threaded Rods | 5 – 100 | 100 – 1000 | 1.0 – 4.0 |
Mechanical Properties Chart
| Property | Metric Value | Imperial Value |
| Tensile Strength (Min) | 515 MPa | 75,000 psi |
| Yield Strength (0.2% Offset) | 205 MPa | 30,000 psi |
| Elongation (in 50mm) | 35% | – |
| Hardness (Brinell, Max) | 217 HB | – |
| Hardness (Rockwell B, Max) | 95 HRB | – |
| Modulus of Elasticity | 193 GPa | 28,000 ksi |
| Poisson’s Ratio | 0.27 – 0.30 | – |
Specifications Chart
| Standard | Description |
| ASTM A193 | Standard for alloy and stainless steel bolting materials for high-temperature service |
| ASTM A194 | Standard specification for nuts for bolts in high-pressure and high-temperature service |
| ASTM A320 | Standard specification for alloy steel and stainless steel bolting materials for low-temperature service |
| ASTM F593 | Standard specification for stainless steel bolts, hex cap screws, and studs |
| ASTM F594 | Standard specification for stainless steel nuts |
| DIN 931/933 | International standard for hex bolts |
| ISO 3506 | International standard for mechanical properties of corrosion-resistant stainless steel fasteners |
Chemical Composition Chart
| Element | Content (%) |
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 11.0 – 15.0 |
| Molybdenum (Mo) | 3.0 – 4.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Physical Properties Chart
| Property | Value |
| Density | 7.99 g/cm³ |
| Melting Point | 1370 – 1400°C |
| Specific Heat Capacity | 450 J/kg·K |
| Electrical Resistivity | 0.000085 Ω·m at 20°C |
| Thermal Conductivity | 16.2 W/m·K at 100°C |
| Thermal Expansion Coefficient | 16.1 µm/m°C (at 0 – 100°C) |
Application Chart
| Industry | Application | Why 317L Fasteners? |
| Chemical Processing | Fasteners in reactors, heat exchangers, and storage tanks | High resistance to corrosive chemicals and acids |
| Marine Engineering | Bolts and nuts for shipbuilding, seawater applications | Excellent pitting and crevice corrosion resistance |
| Oil & Gas | Fasteners in pipelines, refineries, and offshore platforms | Resists chloride and sulfur-containing environments |
| Pharmaceuticals | Equipment assembly in sterile environments | Non-contaminating and resistant to frequent cleaning |
| Food Processing | Fasteners in food storage and cooking equipment | Non-reactive, corrosion-resistant, and hygienic |
| Aerospace | Bolting applications in high-temperature conditions | Strength retention at elevated temperatures |
| Power Generation | Fasteners in boilers, turbines, and condensers | Suitable for high-pressure, high-temperature environments |
Why Choose ASC LLP for 317L Stainless Steel Fasteners?
At ASC LLP, we pride ourselves on delivering high-quality 317L stainless steel fasteners that meet the stringent requirements of various industries. Here’s why clients trust us:
- Extensive Inventory: We maintain a large stock of various stainless steel fasteners 317L in different sizes and specifications.
- Customization Options: We offer custom sizes and designs to suit your specific needs.
- Global Supply Chain: Our fasteners are available for global distribution, ensuring that you get the products you need, wherever you are.
- Technical Support: Our team of experts is always on hand to help you select the right 317L stainless steel fasteners for your application.
317L stainless steel fasteners offer unmatched durability, corrosion resistance, and performance in a variety of challenging environments. Whether you are in chemical processing, marine engineering, or any other industry that demands high-quality fastening solutions, stainless steel fasteners 317L are an excellent choice.
Global Reach
Amardeep Steel Centre boasts a robust global presence and is 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 317L 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.
