ASTM A194 Gr 2HM Fasteners: Properties, Advantages, and Suppliers
ASTM A194 Gr 2HM Fasteners are a crucial component in various industrial applications where high-strength and durable fasteners are needed to withstand harsh conditions, high temperatures, and pressures. These fasteners, specifically made from carbon steel, are commonly used in oil and gas, petrochemical, power generation, and heavy machinery industries.
ASC LLP is one of the leading ASTM A194 Carbon Steel Gr 2HM Fasteners suppliers and exporters. We specialize in providing high-quality fasteners that meet ASTM specifications for reliability and performance.
What are ASTM A194 Carbon Steel Gr 2HM Fasteners?
ASTM A194 Gr 2HM Fasteners refer to heavy-duty fasteners manufactured from carbon steel, conforming to the ASTM A194 specification. This specification covers various carbon and alloy steel nuts used in high-pressure and high-temperature applications. The “2HM” designation indicates specific chemical and mechanical requirements that make these fasteners ideal for extreme industrial environments.
A194 Carbon Steel Gr 2HM Fasteners are subjected to heat treatment to enhance their mechanical strength and durability. They are typically used with bolts, studs, and other fasteners in flange connections, pressure vessels, pipelines, and structural components where toughness, reliability, and resistance to corrosion are essential.
Properties of ASTM A194 Carbon Steel Gr 2HM Fasteners
The properties of Carbon Steel Gr 2HM ASTM A194 Fasteners make them particularly suited for demanding applications. Below are the primary properties:
- High Strength: Due to the heat treatment process, these fasteners exhibit exceptional tensile and yield strength, which enables them to withstand high pressures and loads.
- Corrosion Resistance: Though carbon steel is more susceptible to corrosion than stainless steel, the 2HM grade fasteners are designed to resist corrosion under high-pressure and high-temperature conditions.
- Toughness at Elevated Temperatures: These fasteners retain their mechanical properties, including toughness and strength, even at elevated temperatures, making them suitable for use in high-temperature applications.
- Durability: Gr 2HM Fasteners have long-lasting durability, ensuring reliability in critical applications over time.
- Wear and Abrasion Resistance: These fasteners are designed to endure wear and abrasion, which is vital in environments where mechanical parts are subject to constant friction and movement.
Advantages of ASTM A194 Carbon Steel Gr 2HM Fasteners
The key advantages of using Carbon Steel Gr 2HM Fasteners ASTM A194 include:
- High Temperature and Pressure Resistance: These fasteners are particularly advantageous in high-pressure and high-temperature applications. Industries such as oil and gas, chemical processing, and power generation rely on ASTM A194 Gr 2HM Fasteners to ensure leak-proof and secure connections in extreme conditions.
- Enhanced Durability: Their robust construction and heat-treated process ensure that these fasteners are highly durable and provide excellent long-term performance even in challenging conditions.
- Cost-Effectiveness: A194 Carbon Steel Gr 2HM Fasteners offer a more cost-effective solution compared to fasteners made from more expensive materials like stainless steel or super alloys, while still providing excellent mechanical properties.
- Versatility in Applications: These fasteners are compatible with various bolting materials, making them suitable for numerous industrial applications. Their versatility allows engineers to use them in complex assemblies that require reliable and secure fastenings.
- Customizable Design: Depending on the specific industrial requirements, ASTM A194 Gr 2HM Fasteners can be manufactured in different sizes, coatings, and finishes, ensuring they meet the exact needs of the application.
Schedule and Size Chart
| Nominal Size (inches) | Threads Per Inch | Width Across Flats (inches) | Width Across Corners (inches) | Height/Thickness (inches) |
| 1/4 | 20 | 0.438 | 0.505 | 0.218 |
| 3/8 | 16 | 0.625 | 0.719 | 0.344 |
| 1/2 | 13 | 0.875 | 1.010 | 0.437 |
| 5/8 | 11 | 1.062 | 1.225 | 0.531 |
| 3/4 | 10 | 1.250 | 1.445 | 0.625 |
| 1 | 8 | 1.625 | 1.880 | 0.812 |
| 1-1/4 | 8 | 2.000 | 2.311 | 1.000 |
| 1-1/2 | 6 | 2.375 | 2.760 | 1.187 |
Mechanical Properties Chart
| Property | ASTM A194 Gr 2HM Requirements |
| Tensile Strength (psi) | 125,000 (min) |
| Yield Strength (psi) | 105,000 (min) |
| Elongation (%) | 16% (min) |
| Hardness (Brinell) | 223 – 352 HB |
| Hardness (Rockwell C) | 20 – 37 HRC |
| Proof Load (psi) | 100,000 (min) |
| Reduction of Area (%) | 50% (min) |
Specifications Chart
| Specification | Details |
| Standard | ASTM A194 |
| Material | Carbon Steel |
| Grade | 2HM |
| Type | Heavy Hex Nuts |
| Heat Treatment | Quenched and Tempered |
| Coatings | Plain, Zinc Plated, Hot Dip Galvanized |
| Thread Type | UNC (Unified National Coarse) and UNF (Unified National Fine) |
| Applicable Bolt Classes | ASTM A193 B7, B16 |
| Manufacturing Processes | Forging, Machining, Heat Treatment |
Chemical Composition Chart
| Element | Percentage Composition (%) |
| Carbon (C) | 0.40 – 0.50 |
| Manganese (Mn) | 0.65 – 1.10 |
| Phosphorus (P) | 0.035 (max) |
| Sulfur (S) | 0.040 (max) |
| Silicon (Si) | 0.15 – 0.35 |
| Chromium (Cr) | 0.30 (max) |
| Nickel (Ni) | 0.40 (max) |
| Molybdenum (Mo) | 0.12 (max) |
Physical Properties Chart
| Physical Property | Value |
| Density | 7.85 g/cm³ |
| Melting Point | 1425°C (2597°F) |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 50 W/m·K at 20°C |
| Electrical Conductivity | 10% IACS |
| Specific Heat Capacity | 0.490 J/g°C |
| Coefficient of Thermal Expansion | 12 µm/m°C (20 – 100°C) |
Application Chart
| Industry | Application |
| Oil & Gas | Used in pipelines, flange connections, and pressure vessels. |
| Petrochemical | Suitable for high-temperature and high-pressure equipment in refineries. |
| Power Generation | Ideal for high-pressure steam systems, boilers, and turbines. |
| Chemical Processing | Resistant to corrosive chemicals, used in reactors, tanks, and heat exchangers. |
| Marine & Offshore | Utilized in offshore platforms, rigs, and marine equipment for durability. |
| Heavy Machinery | Fasteners used in construction and mining equipment. |
| Automotive & Aerospace | High-strength nuts used in heavy-duty applications in vehicles and aircraft. |
| Infrastructure & Construction | Used in bridges, heavy structures, and building frameworks. |
ASTM A194 Carbon Steel Gr 2HM Fasteners Exporters and Suppliers
As one of the leading A194 Carbon Steel Gr 2HM Fasteners exporters and suppliers, ASC LLP offers a wide range of carbon steel fasteners that meet the highest quality standards. We ensure that our products conform to international standards and are rigorously tested to ensure durability, strength, and resistance to extreme conditions.
Our ASTM A194 Gr 2HM Carbon Steel Fasteners are available in various sizes and finishes to cater to diverse industrial needs. We are committed to delivering superior products to our global customers, ensuring that they receive fasteners that can withstand the rigors of their applications.
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 ASTM A194 Gr 2HM 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.
